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#gravity is acceleration apparently?????
can-we-die-now · 2 years
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physics just goes around giving everyone existential crises
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sushiwriterhere · 1 year
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it’s not rotten work (not if it’s you)
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summary: Four times you, Jake, and Javy danced around the truth, and the one time you confronted it.  rating: explicit (18+ mdni) pairing: Jake ‘Hangman’ Seresin x f!reader x Javy ‘Coyote’ Machado word count: 4.2k warnings: idiots pining, mmf PiV (unprotected), m/f oral (receiving/giving, face sitting), cockwarming, hangman being hangman, light angst, dacryphilia a bit, mention of violence (stabbing), no use of y/n.  notes: companion fic to my 'a little bit of fun' drabble. thank you to sana and amelia (@laracrofted @theharddeck) for the inspiration! this one's definitely more heavy on the emotion, so please let me know what you think!! tagging: @sebsxphia @sometimesanalice @waklman @joaquinwhorres @gretagerwigsmuse @lewmagoo @genius2050 @seresinsweetie @teacupsandtopgun
one.
Neither Javy nor Jake really reacts when you’re the one to initiate conversation in your group chat.
Bad day. Someone pick me up?
Javy responds with a thumbs up and then a simple-Hangboy’s in the air. See you at 5.
Neither of you speak on the ride to their place; Jake’s usually the one to fill those silences. Javy just places his hand palm side up on the center console and wraps his fingers around yours when you place your hand in his. It’s the sort of companionable silence that stirs feelings you don’t really have the energy to identify.
An hour and a half later you’re settled in Javy’s lap, one of Jake’s old Navy shirts falling loosely around you, Javy’s cock inside you. It brings you a rare type of peace.
He’d made you shower and eat, guiding you through the motions with a tenderness somehow not at odds with his broad shoulders, the military uniform he’d removed when he climbed into the shower with you. You’d talked in low tones over a recipe of his grandmothers’, him coaxing you to tell him about your day. They already had a half-empty pint of your favorite Ben & Jerry’s in the freezer.
He’d undressed you from the waist down the same way he’d dressed you after your shower—gently, slowly, like you were something precious and fragile. You very pointedly did not cry. He took you apart on his tongue once, kneeling between your legs as you melted into the couch.
When he slid into you, your mind finally went quiet.
Javy’s got some game on in the background, the lull of the commentary giving you something to tune out as you drift. He’s solid and warm below you, inside you, a constant like the rate of acceleration due to gravity. Occasionally, he’ll shift or smooth his hand down your back or adjust the blanket that’s draped over you, but otherwise the two of you are still.
You’re not sure how long you’ve been napping til you hear keys in the door. You recognize Jake by footsteps alone, the way his keys jingle as they drop in the bowl by the door, the sound of him sliding his boots off til they land on the floor with a soft thump.
“Hey, thanks for getting her.” Javy nods against you, his chin bumping the top of your head where it’s buried in his chest, “She tell you what happened?”
Javy smooths your hair so his hand comes to rest over the ear not pressed into him, but you hear their conversation anyways, “Boss yelled at her in front of everyone for something that wasn’t actually a mistake. He didn’t apologize.”
The way Jake scoffs is muffled but your mind can picture his face, “I’m gonna give that asshole what’s coming to him one day. I keep telling her to quit. We’ll take care of her while she looks for another job. ”
Javy laughs gently, jostling you despite his best efforts, “And what? Get us dishonorably discharged in the process?”
It makes your chest clench when he says 'us' instead of 'you', as if Javy would be right there alongside him on your behalf. A pause, and Jake says something you don’t catch.
Javy’s response gets drowned out by the buzzer sound from the game, by the way his hand is still covering your ear. You only catch “never agree”.
Jake is apparently unsatisfied with Javy's answer because you can hear it in the way he leaves the room. You drift off again.
The next time you come to, it's because your dream had you squirming in Javy's lap, reminding you of how he still had you nestled on his cock. Then, there's a kiss being pressed to your forehead. You open your eyes to see Jake’s face in front of you, his hair dripping wet onto his shoulders.
"Hey baby," He murmurs before pressing your lips together.
It's heated, it's possessive, like he's trying to convey everything he feels he's unable to say through the way he licks into your mouth. Javy grabs the back of his neck so he can peck Jake, the kiss so chaste in comparison to the way Jake was just devouring you. It warms you beyond just the way Javy's body heat does.
They've been doing that more often, like they're discovering something beyond years of longing, beyond years of ribbing on each other to try and relieve what they didn't realize was sexual tension.
When you three finally make it to Javy’s bedroom, they take you apart the way they always do. But somehow, it’s infinitely more tender.
Javy fucks you first, rocking into you as you sprawl on his king size mattress. Jake’s there the entire time, kissing away your tears and petting over your stomach to press down on your lower abdomen.
Neither of them stops talking the entire time.
“So beautiful and smart, our girl—”
“I can feel Javy in you baby, you’re taking him so well—”
“God where would we be without you—”
You sob as you cum for the second time that evening, and Javy fucks you through it all. You’re so overwhelmed by the way their words wash over you like the sun on a summer day. The baritone of Javy’s voice murmuring “our girl” rattles around your mind til he finishes inside you.
Then it’s Jake’s turn. He’s just as, if not more, gentle than Javy.
Javy slips off the bed to go clean himself up. When he rejoins the two of you, Jake is already so close. He pulls out at the last minute, fisting his cock til he finishes on your stomach and chest, a punched out moan leaving him.
It’ll never cease to amaze you the way they manage to make you finish with such ease as Jake’s fingers find your clit and he plasters himself all over you so he can kiss you. It should be gross, the way his cum makes him slide a bit against you, but it grounds you instead. You can feel where the mix of you, Jake, and Javy is running down your thigh.
You’ve got Javy’s hand in a vice grip. They’re here, they’re real.
When it’s all said and done, Jake appears with a wet washcloth to wipe down your forehead, between your legs. Eventually, he carries you to the bathroom so you can pee and brush your teeth (“Javy got to carry you earlier while he was inside you, mind you, so it’s my turn.”).
Laying between them, you start to feel human again. You have half a mind to ask what they were bickering about earlier, but sleep is dragging you under before you can act on it.
two.
Jake's been irritating you all night. He begged you to come to the Hard Deck, claiming lonely since Javy was out of town for the weekend, some trip to DC neither of them wanted to discuss.
Distantly, you know this is how he shows affection. Like a teen boy, he’s poking and prodding at you. In between his turns at pool, he’s pulling you into his arms, grabbing at your waist, yanking on the ends of your hair. Something about Jake just requires he’s touching you at all times when you’re within his general proximity.
Natasha sets a beer down in front of you, before settling in across from you, “I don’t know how you put up with it.”
Your thing with Jake and Javy isn’t exactly a secret, but no one addresses it. It’s just sort of, there. The rest of the Dagger Squad seems to have just accepted the dynamic, brought you into the fold.
“Put up with him?” You nod at Jake, who’s trying to show Rooster some pool move that apparently requires one leg on the table. The tension between the two of them has eased considerably these days.
She laughs, “Either of them really, Hangman and Coyote. They feed off each other’s energy in the worst way sometimes, I think I’d go crazy.”
You’re silent, trying to figure out a way to respond. The three of you haven’t defined what this is, haven’t talked ‘feelings’, despite the amount of time you spend at their place, the way your days are filled with each other. You’re not sure how to explain that it just works somehow—on the outside it might seem like you lean into Javy more, but the reality is more complicated.
Jake and Javy are bonded by years in the Navy, nothing quite like constant near-death experiences to foster love. They do feed off each other, but in the way that they’re so familiar they’re almost one. Javy does steady you—but he also riles you up like no one else. Jake brings out the livelier side of you, but he’s also fiercely and openly protective of you.
You're stubborn and unmoving where Jake goes with the flow. You're snarky and sarcastic where Javy is calm, at ease. It just works.
Natasha just looks at you expectantly, and you shrug. Unsure of what to say.
You settle on, "They do drive me crazy, but I think I'm not totally gone yet."
Her laugh echoes above the background noise of the bar.
Back at the guys’ shared apartment, you fuck Jake slowly, keeping your lips pressed together. You whine into his mouth when he hitches your thigh up on his bicep, the position hitting something inside of you just right.
In that moment, he doesn't comment on the change of pace from your usual, more intense sex—he leans into it. He presses his lips to your forehead, then leans his against yours. His grip on your hip and thigh aren't as bruising as they usually are, they’re more grounding.
Jake always talks during sex, never shuts up. This time, he’s whispering more than anything else, and you can’t understand him. You want to ask but the way he’s fucking into you makes you lose all ability to speak.
When you finish, you keen and arch your back as Jake licks a stripe up the side of your neck. You shudder as he cums right after you. The two of you lay there for just a moment, taking deep breaths.
Jake presses his lips to your forehead one more time before pulling out and sitting up, "You wanna talk about it?"
Of course he noticed something was up–that's just who he is. A hurricane of a man, but still attentive to every little detail.
You consider him for a moment, his naked form, completely at ease with your eyes roaming over his body. You think of telling him about your conversation with Natasha, about the way it had made you think through the three of you. Instead, you shake your head and curl onto your side, and wait for him to get back into bed.
three.
Surprisingly, it’s Javy’s who’s been pushing you. Jake’s been hesitant to open his mouth on the subject, but you don’t miss the way he perks up slightly when you and Javy start getting into it again.
“I have a perfectly good apartment of my own, Javy!” It’s repetitive, like a swing dance, at this point. “I don’t get why you want me to move in.”
“Sweetheart, if you’d listen to me, you’d ‘get why’. You live in a bad area of town, and I’m laying awake every night worrying about whether to expect a phone call from the nearby hospital.”
Jake focuses intently on the crossword he’s pretending to do as you and Javy both stare at him expectantly. The last time he’d voiced his opinion, you’d threatened to call his mother and tell her he was trying to tell you what to do. Theoretically, he knows she’d be on his and Javy’s side, but he doesn’t feel like dealing with that.
(You haven’t threatened Javy in the same way, and he wonders if it’s because his mom is the only woman in this situation with a more stubborn disposition than you. Maybe it’s just because it’s Javy.)
"Well, maybe you should worry less." You snark. Javy doesn't respond and Jake can hear the way his eyebrow raises.
“Seventeen across, 'unconcerned',” Jake half mumbles to himself, half trying to break at least some of the tension.
“Perfunctory,” you snap at him from where you’re glaring at Javy, because of course you know.
"That's not an option, sweetheart." Javy's using the tone that says his decision is final, that he won't change his mind–it's one that you fucking hate.
Jake barely manages to stand up to intercept you when you turn around and head for the door, sans any of your possessions but your phone. He wraps his arms around you and refuses to release you despite the way you squirm indignantly in his hold.
He eases his grip just enough so he can lean down to whisper in your ear, "Baby, at least consider it?"
Out of the corner of his eye, Jake sees the way Javy just stares at the two of you. His expression is nearing anguish, and Jake gets it. The way you pull back every time they try to bring you closer feels like ripping barbs out of their skin. The emotional pain is so intense it rivals physical.
It’s not entirely about safety this time, not really.
"He's being a dick." You murmur, finally acquiescing and wrapping your arms around Jake's torso.
"We're not trying to control you babe, we want you here. He just maybe should've led with that. We want you to be safe." A little good cop, bad cop. Sorry, Javy.
To his surprise, you just say, "I know."
There's no fight left in any of you. Not since someone got stabbed outside your apartment building a month ago and the three of you, well, you and Javy, have been arguing non stop about it.
You just want it to stop—the tension every time you leave their apartment for work, the shared knowing that you won’t necessarily return. Jake clearly is getting sick of the arguing and you and Javy aren’t any less exhausted.
Turning around in Jake’s arms you look at Javy, “You—You’re right. I’m sorry.”
Javy’s in front of you in an instance, taking your face in his hands and kissing you fiercely, “I’m sorry, too. We care about you, we want you to be safe.”
There’s much left unsaid, but in that moment, all the words spoken are more than enough.
four.
When you wake up, you're alone in bed. You vaguely remember Jake getting up in the middle of the night and him and Javy talking in low tones as Jake got dressed. He kissed you goodbye and promised to come home safe. Javy had gotten back in bed.
The curtains let the gray of the morning light leak into the room, washing everything in a sort of hazy filter. There's clanking from the kitchen, but for just a moment, you let yourself lay there, absorbing the moment. The sheets still smell like that combination of Jake and Javy that lulls you to sleep every night.
For a second, you're overcome by a fear that one day you'll turn to your right and you won't be able to bury your nose into the pillow and smell Jake. He's only gone for the weekend, but it's that part of you that rears its head every time one of them leaves. Every deployment, every work trip they're not allowed to discuss, every morning they leave for training.
The bed dips next to you as Javy climbs in–you hadn't noticed him come back into the room. He smells like sweat just a bit, and you giggle sleepily when his fingers ghost up your ribs.
"Get out of the bed, Javy, you're sweaty," You groan, turning away from him as he drags you backward into his chest.
"Really," He laughs, "You didn't mind so much last night."
Despite your protests, you snuggle back into him, feeling the way his workout shirt slides against your bare skin. It's the sort of closeness that isn't just physical—it's about knowing your partners' boundaries, about knowing that they don't actually mind that you just came from the gym and then climbed right into bed. The sheets need to be changed anyways.
Javy kisses right below your ear and you hum happily. His lips ghost over your cheek but don't reach your lips.
"Go shower," You murmur as you turn around to kiss him.
He doesn't respond. He can't–not with the way you're flush against him, only wearing a pair of boxers where he’s only in a shirt. Not with the way you lick into his mouth lazily, humming when you taste the juice he drank. Not with the way your hands run down his stomach and grab clumsily at his hardening cock.
If you weren't awake before, you sure are now–especially with the way Javy's warm and calloused hands skim your nipples and lift your leg to hitch over his hip.
He rolls the two of you so his weight is pressing you into the mattress. There’s something so distinctly soothing about the position, the way he’s warm and heavy and everywhere on you. You move your hips in a steady rhythm against his.
When his hands find their way into the pair of boxers you stole from Jake, he finds you already soaking. You can feel the way he smiles smugly against your mouth. That just won’t do.
Shoving at his shoulder, he lets you turn the two of you over again. You kiss his neck, working your way down his body. Making a show of wrinkling your nose at his shirt, he yanks it off in one fluid, yet desperate, motion.
The instant you wrap your lips around him, his hands are in your hair.
“Fuck, sweetheart, you’re—”
He doesn’t get to finish his thought, not when you slide your mouth down the length of him, fighting your gag reflex at the way he nudges the back of your throat. There’s something so sensual about the way your nose almost brushes the curls at the base of him.
“Shit, shit, Jesus,” This is the way you like Javy best, all his boundaries down, just letting himself feel, “Your mouth is so fucking good, god, how do you—ugh, fuck!”
You’re pulling out every trick in the book. You fist the base of his cock in tight grip and let your spit ease the twist of your wrist. He shudders when you pull your mouth off him to lazily tongue at the sensitive spot at the underside of the head.
You know he’s getting close when his hips start thrusting, despite the way he usually holds himself back. The groan he lets out when he comes down your throat is guttural.
“You’re a menace,” He gasps out, and the glaze of his eyes is so familiar, so welcomed in the way that it makes your chest clench with pride and something else.
“You didn’t seem to mind just now,” Reflecting his words back at him before you make a show of swallowing deeply.
He drags you up his body while tugging off the boxers, “I mind because I wanted to fuck you.”
You giggle at the way he fakes his frustration, but you’re cut off when he lifts you up and over him til you land on his face. His strength never fails to stun you.
Javy settles you directly on his face. There’s still a part of you that feels overly exposed in the position but he wastes no time. He licks into you without reserve, burying his tongue in you and closing his eyes and humming in satisfaction.
Javy knows your body through and through—he knows what makes you gasp, what makes you moan, how he can drag this out or rush to the edge. This time, he’s savoring the moment, bordering on torture. His tongue is slow, purposeful, as it circles your clit and fucks into you slowly.
You can hear the way you’re whining as if you’re outside of your body. Your voice sounds foreign even as you beg Javy please, please, fuck right there, please don’t stop, please.
When you come you slam your hand on the headboard and moan something deep in your chest. Javy smooths his hands over your waist and ass as you come down, shaking slightly. He slides you off him and down the bed til the two of you are face to face again.
You think he might be murmuring something as he presses your lips together, again and again, but you can’t quite make it out.
plus one.
The Hard Deck seems so far away from here, where you and Javy are sitting on the beach behind it. Jake's only a few feet away, inside getting the three of you a round of beers. The noise of the crowd celebrating the end of another week is dim and distant.
You and Javy are sitting side by side, just barely touching. The heat radiating off him is unreal, as always. The two of you are talking about Jake and Javy's families, having drifted to the subject after recalling the way Jake's mom had squealed at the sight of you when she'd FaceTimed earlier in the day. His mom absolutely loves you.
He shrugs, “Momma and Amy knew about Jake and I before we did. I brought you up once and they figured it out.”
That surprises you. You knew Javy's mom and Jake's mom were perceptive, yet open, women, but you hadn't expected this—them seeing not just Jake and Javy for what they were, but the three of you, too.
You lean into him, snuggling close, "What did they say?"
He presses a kiss to your hair before answering, his words muffled with the way his lips move against your skin, "They said you had to be one hell of a woman to put up with us."
"Why does everyone keep saying that?" You pull back from him, and shock paints his features.
He laughs, a bit uneasily, "Who else is saying that?"
"I'm not 'putting up with you', I love you, I love Jake, I love you both." You push yourself to standing, unexpectedly frustrated. The sweetness of the moment seems acidic now. It eats at you.
This was hard enough for you to accept. Hard enough to rationalize, to try and understand what it meant that marriage certificates were for two names, that it was 'partners' and 'couples', that the world generally worked in twos. That's enough to try and deal with–much less with those closest to you pointing out how difficult it must be for you.
Javy can't even savor the fact that you've just said you love him, that you love Jake–not when your lower lip is wobbling and your chest is starting to heave in that way when you cry.
"Hey, hey," Javy's voice is steadying, as he stands next to you and takes your hands, "Look at me. I'm sorry, I didn't mean to make you cry."
It didn't even register to you that you're crying, but you feel it now. The telltale itch in your nose, the way your throat feels tight, your eyes watering. You rip one of your hands from his to wipe at your face messily.
"Woah, woah, what's going on?" Jake materializes next to you, the three beer cans dropping in the sand, forgotten in the instant he saw you crying.
"Everyone keeps trying to tell me it must be hard for me to love you, and it's not." Jake's mouth only drops a bit when you say love, an admittedly muted reaction in comparison to what you'd been expecting.
"I mean–" Jake starts, but he stops when Javy shoots him a look over your head. It's not the time for jokes.
He tries again, "We fought with you for a month to try and get you to move in with us, it's not hard for us to love you at all either."
For some reason, that just makes you cry harder as they pull you into them, "I didn't fight with you, I fought with Javy."
At that, the two men can't resist bursting into laughter.
"I'm-I'm sorry, sweetheart," Javy says as his laughter dies down, "We're not laughing at you."
You wipe at your tears hastily and giggle just a bit, "It is kind of funny."
“You love us?” Jake’s smile is cheeky, as much as it can be when he feels like you’ve split his chest open with your bare hands and are now holding his fluttering heart in your palms.
Fighting the urge to run or lie, you simply nod, “Unfortunately.”
Old habits die hard.
Later that night, when you’re pressed up against Jake’s chest with Javy at your back, they chant the words to you like a sacred prayer. They say it while they take you apart with their fingers, their tongues.
Jake says it in the way he curls his fingers inside of you, searching for the spot that makes your back arch and your thighs try to squeeze together. Javy says it in the way he inches ever so slowly into you, in the way that he tilts your hips so he can fuck your just so.
You say it in the way you trust them to see you so vulnerable, tears streaming down your face in pleasure, eyes rolled back. You wouldn’t have it any other way.
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usafphantom2 · 4 months
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He Fell from an SR-71 at 78,000ft! #shorts youtube.com/shorts/2ZMMrna… via @YouTube
DURING THE EARLY DAYS OF TESTING FOR THE LEGENDARY SR-71 BLACKBIRD, THERE WERE SOME HARROWING MISHAPS, THE DETAILS OF WHICH HAVE RARELY COME TO LIGHT.
ON JANUARY 25, 1966, TEST PILOT BILL WEAVER AND LOCKHEED FLIGHT TEST RECONNAISSANCE AND NAVIGATION SYSTEMS SPECIALIST JIM ZWAYER EXPERIENCED THEIR PLANE VANISHING AROUND THEM WHILE EXECUTING A TURN… AT MORE THAN 2,400 MILES PER HOUR.
The most memorable flight occurred on Jan. 25, 1966. Jim Zwayer, a Lockheed flight test reconnaissance and navigation systems specialist, and I were evaluating those systems on an SR-71 Blackbird test from Edwards AFB, Calif. We also were investigating procedures designed to reduce trim drag and improve high-Mach cruise performance. The latter involved flying with the center-of-gravity (CG) located further aft than normal, which reduced the Blackbird’s longitudinal stability.
We took off from Edwards at 11:20 a.m. and completed the mission’s first leg without incident. After refueling from a KC-135 tanker, we turned eastbound, accelerated to a Mach 3.2 cruise speed, and climbed to 78,000 ft., our initial cruise-climb altitude.
Several minutes into the cruise, the right engine inlet’s automatic control system malfunctioned, requiring a switch to manual control. The SR-71’s inlet configuration was automatically adjusted during supersonic flight to decelerate airflow in the duct, slowing it to subsonic speed before reaching the engine’s face. This was accomplished by the inlet’s center-body spike translating aft, and by modulating the inlet’s forward bypass doors. Normally, these actions were scheduled automatically as a function of Mach number, positioning the normal shock wave (where air flow becomes subsonic) inside the inlet to ensure optimum engine performance.
Without proper scheduling, disturbances inside the inlet could result in the shock wave being expelled forward–a phenomenon known as an “inlet unstart.”
The ejection seat had never left the airplane; I had been ripped out of it by the extreme forces, seat belt, and shoulder harness still fastened.
“Can I help you?” a voice said. Did I hear things? I must be hallucinating. Then I looked up and saw a guy walking toward me, wearing a cowboy hat. A helicopter was idling a short distance behind him. If I had been at Edwards and told the search-and-rescue unit that I would bail out over the Rogers Dry Lake at a particular time, a crew couldn’t have gotten to me as fast as that cowboy pilot had.
The gentleman was Albert Mitchell, Jr., owner of a vast cattle ranch in northeastern New Mexico. I had landed about 1.5 mi. from his ranch house–and from a hangar for his two-place Hughes helicopter
Bill Weaver was an SR 71 test flight pilot; he survived the crash. There were problems with the Faceplate on his helmet that needed to be corrected.. At 80,000 feet the temperature outside is -65°. Which is near the maximum altitude of a potential bail-out.
Bill Weaver was unable to see out of his face plate because of the ice buildup. An ejection out of the world's fastest man-breathing airplane is scary enough but not being able to see is terrifying!
@Habubrats71 via X TAP ARROW BUTTON BELOW TO VIEW 😋👇
youtube
His face plate was frozen. The result of this accident a heated face plate was manufactured, that required a battery pack and that worked.
There were several more accidents over the next 20+ years and all of the Air Force officers would survived their ejections. The only unfortunate death occurred to a test pilot who broke his neck.. Mitchell said he’d check on Jim. He climbed into his helicopter, flew a short distance away and returned about 10 min. later with devastating news: Jim was dead. Apparently, he had suffered a broken neck during the aircraft’s disintegration and was killed instantly. Mitchell said his ranch foreman would soon arrive to watch over Jim’s body until the authorities arrived. #HABUBRATS
@Habubrats71 via X
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fox-flux · 1 year
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physics problems 2: still player on a slope
(crossposting from cohost)
you have a player actor. great. heres one. it's lexy
[lexy sprite omitted because tumblr completely fucks it up]
she is standing on a slope. you are savvy at physics and understand that:
gravity will attempt to pull her downwards
she will immediately collide with the slope itself
her remaining motion will be projected onto the slope (roughly equivalent to subtracting the normal force)
she will then slide down the slope.
this is bad, because lexy is not trying to move. neither she nor the ground are made of ice, so surely she can hold herself in place.
but again, you are savvy at physics, so you know what holds her there: friction. so you say, ok, add a bunch of friction.
now you have a problem. the good news is that your physics engine is completely homegrown, so you can explain the problem in excruciating detail. the bad news is that it is your problem to solve for the same reasons. and the problem is that your movement code integrates everything upfront, then performs a motion.
that means you have your current velocity (presumably zero), gravity (pointing downwards), and friction (pointing up along the slope). you add them together in some fashion, and the result can never be zero, even with friction's natural capping behavior — this is just how vector addition works. so lexy will definitely try to accelerate in some direction, and the best you can hope for is that she will try to accelerate exactly towards the ground. but working out how to make that happen requires essentially working backwards from gravity (non-trivial because various effects can interact with gravity) and also just feels real dumb to be doing.
so where did you go wrong?
(an aside: the reason this doesn't happen in the demo is that i also have a cutoff on very small movement, so that little rounding-error levels of velocity don't make things shift a pixel at a time over the course of seconds. but that cutoff is too coarse, and in particular it makes some slow objects just not move on monitors with high refresh rates, so i've reduced it dramatically, and that has caused lexy to slide downhill. i thought i'd fixed this before but apparently i was just masking it by accident!)
i think the problem,
conceptually, is that friction happens at the wrong time. it's integrated with velocity and acceleration accumulated over the course of the last tic before movement is attempted, but friction isn't something that happens in a vacuum. i mean, literally, it won't happen if there's nothing else around. friction is an interaction with another object we're touching, and before we start moving, there aren't any of those!
so it seems like friction should only apply between steps 3 and 4 — after colliding with the ground, before actually moving along it. this is the point at which we know we are, in fact, sliding against the ground. and now we even have the ground available, so we don't need friction itself to be a vector at all, which is kinda convenient.
but that's in the guts of basic motion i... hesitate... to put something like friction in the middle of that. also, what happens if you collide and slide again? does friction apply again? probably not. so it only applies specifically the second time through a loop? that's rather weird. maybe it's okay that it's weird? it does add complexity for "out-of-turn" motion though, like being pushed or climbing a ladder, which probably won't have a big perf impact but does feel inappropriate.
other solutions
skip gravity
i could simply not apply gravity to a player on the ground. i've seen mention of that being done before. but that just feels goofy?? they are trying to move downwards, and on a slippery slope they even should move downwards.
also i have a bunch of objects that care about things landing on them, and this implies some weird special cases (in who knows how many places) for detecting that a player is walking on top of them without actually moving into them. and i have enough special cases as it is man. expressing a physics condition is so goddamn hard. i have the unsettling feeling that this would have other unforeseen consequences as well
a possible upside of this is that it could very well skip an entire movement iteration every tic — currently, a walking player tries to move sideways (for walking) + downwards (for gravity), immediately hits the ground, projects along the ground, and then tries to move a second time. without gravity in there, they'd skip the first collision and move exactly sideways from the beginning.
remember the ground
i do in fact remember the ground (tile or actor or whatever) for each actor, so i could use that to get the friction right upfront.
but what does that mean in practice? i guess it means that the motion vector would be projected along the ground before even attempting to move at all (and then that would be shortened by friction). so it's kind of like skipping gravity — if lexy is standing on flat ground, her attempted motion (straight down) will be projected along the ground (horizontal) and always come out zero.
i guess essentially this combines the other two options — it applies friction to the movement vector, but it skips ahead one attempt by making use of knowledge from the previous frame. it would get the friction stuff out of the movement core, which i like, but it would still make objects not push against the ground, which i don't like.
ah, all the options seem nebulously Not Great, which is always a sign of a fun problem. and don't worry, this gets even more complicated with physics problems part 3
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Something I noticed about JNPR/JNOR's fight against the full Team FNKI in V7 is how it arguably acts as a demonstration of how far they've come...but also setting up how far they still have to go, as well as their inability to fight against Neo, and also how Atlas' teaching style somewhat negatively affects them.
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In the fight JNPR has against FNKI, it's telling how they're all fighting separate 1 on 1 battles, almost making this a parallel to the Ace Ops vs RWBY fight. Neon is even mirroring Ruby by making Nora angry and goading her into chasing Neon around the arena, arguably wasting a lot of energy doing so. Meanwhile, Jaune is fighting a ranged opponent with Flynt despite having no ranged weapons, Ren is fighting head on against Ivori, who can deflect all of his shots, and Oscar is fighting against Cobalt in close range despite Cobalt having an apparent advantage in strength and size.
Where the nuance lies is that despite being split up, FNKI still ultimately loses for several reasons.
One is that they haven't undergone the same level of growth that JNPR have, with Neon and Flynt still relying on the same tactics they used back in the Vytal Festival, with implications that it's probably the same for their other teammates. JNPR are just vastly more experienced fighters even if they aren't on the same tier as RWBY, with Oscar having the benefit of an accelerated growth due to his Ozpin collective to compensate for his relative lack of experience.
The other is interesting in that when FNKI is defeated, it seems like it was done by JNPR overpowering Neon's teammates. This stands out because it seems to go against the idea that victory cannot be achieved purely through strength...but in truth it actually is a demonstration of Atlas' ideology being applied through team JNPR...and sets up the reveal of such an ideology's limitations.
Atlas' ideals of using might to overwhelm your enemy works with JNPR vs FNKI because it's showing how that only applies when your enemy is WEAKER than you are, or has serious weaknesses to their abilities. JNPR, with their experience and bigger skillpool were at a significant advantage over the less experienced FNKI, which meant that even with the problem of being divided, they could still individually overpower their foes.
But this ends up having serious limitations when they go up against Neo later on. Not only does Neo have a lot of experience that dwarfs JNPR, but her fighting style is the fundamental antithesis to Atlas' philosophy because it's all about turning her enemies' strength against them. Trying to beat her with pure strength is an exercise in futility unless you just so vastly outclass her that she'd rather flee.
JNPR is shown to be trying to overpower her the same way they did with FNKI, only to fail to do much against her without having the element of surprise or a stronger fighter like Ruby or Pyrrha to compensate for their shortcomings. Nora basically gets thrown aside while Ren tries to keep using his frontal attack to no avail. The only times they manage to do anything to her is when they're not trying to overpower her, rather focusing on outmaneuvering her (Oscar getting the lamp back), or just simply stalling her with sheer defense (Jaune and his Gravity Shield Burst). Combined with the hectic situation around them, and it's no wonder they ultimately lose.
This limitation of Atlas philosophy is only further noticeable when you consider just how effectively JNR did against the Centinels in Episode 3, and that was BEFORE Atlas took part in their training. While Atlas tech and training did help them, it also arguably exacerbated some of their shortcomings that was somewhat mitigated before, whereas RWBY has been trying to overcome those kinds of shortcomings for quite some time.
Yup. The Atlas way is to train all members of a team separately and then have a leader send them where they need to go. It can help people become stronger individually but it is terrible where teamwork is needed.
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itsuki-minamy · 9 months
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"AYAKA – SIDE STORIES 10" (Part 04/04)
"THE PARADOX OF KAMEIDO AKI"
TRANSLATION: NARU-KUN
* List of Chapters
It was different.
If the turtle in front of her, the walls of life, slowed her down and said, "Go ahead" or "That's enough", would she be satisfied with that? Would she agree?
She wouldn't do it. She wouldn't be convinced. She couldn't forgive herself if she felt relieved when someone said, "That's enough", and rushed to help.
She is a very stubborn person and that won't change until she dies.
She will not stop doing it until the moment of her death.
Aki accelerated quickly and passed Masaru.
(This impulse...!)
Masaru realized that in an instant. He had misjudged Aki's determination.
Generally speaking, sprinting requires at least a few meters to go from sprint to stop. Considering that the current surface is flat concrete, he should estimate that it will be at least 10 meters.
However, Aki's strength clearly exceeds that.
He intended to speed up until the last moment.
"Aki!"
He reached out, but it was too late.
Aki slipped out of Masaru's grasp and ran further forward.
Masaru was starting to slow her down, but he couldn't catch up anymore.
"Hear that!"
"You're going to fall, Kame-chan!"
The students following her were starting to make a fuss.
And...
"Hahaha, let's do it, Kame-chan."
There was laughter from Masaru's side.
"What?!"
Before she knew it, one of her students was running next to her.
He was facing Masaru in a backward running position. It was clearly abnormal posture and speed.
"You... from Aki's class...?"
"Hiratome-san, it's okay here, go to the other side!"
Aki's student Sagawa made a "detour" gesture with his outstretched hand and then accelerated even further, pushing Masaru away with tremendous force.
"Hey, you... Aki?"
"Leave it to me~!"
And at that moment, in the direction they were heading...
"Oraaaa!"
Aki stepped off the tip of the breakwater and jumped into the air.
The weather was starting to get worse and the waves were high.
Aki's body fell several meters and was enveloped by the icy water of the river. Her consciousness and body temperature disappeared in an instant and her vision turned black.
(Ah... this is dangerous...)
Even that consciousness disappeared in an instant.
Before she knew it, Aki was in a soft beam of light.
There was no gravity, no sense of up and down, she simply floated in a fixed direction along with particles of light.
(Is this the afterlife... the Sanzu River?)
She had imagined something more like a river bed or a flower garden, but when she thought about it, she realized that it was an image of the old "other world" and that something as simple as that would be more authentic in these days.
As her consciousness became clearer, she remembered the race process with Masaru just now.
Jump from the breakwater into the winter river
(I see... I think I'm dead.)
She wouldn't go so far as to say that she was prepared to die, but when her blood rushes to her head, she does something reckless without thinking about the consequences, so she expected to some extent to end up dying like that.
(Well, in that case, it's okay.)
She ended up causing problems for Masaru, but if she could come out on top with the victory, that would be the most important thing.
Regardless of what happens along the way, in the final moments of her life she must emerge victorious. That's what she had in mind.
When she was in her third year of high school, her father died.
Apparently, he died instantly in a traffic accident while traveling. It was too sudden, but more than that, she always regretted the fight she had with her father just before.
About a week before the accident, Aki, who had lost a match with Masaru as usual, complained, "I'm supposed to be Achilles.", to which Masaru was amused and said, "That guy is slower than a turtle."
"What?!" Aki said, and Masaru also seemed surprised. She thought he knew the story of "Achilles and the Tortoise". After saying that, he apologized.
It was frustrating. She had feelings like "I was humiliated" by Masaru, "I was made fun of", and "On top of that, he cared about me". Although she had those feelings, her strongest feeling was that her father had "betrayed her".
Her father was not an idiot, unlike her. He probably knew the story of "Achilles and the Tortoise" and was probably very careful when naming his daughter. In other words, the "demigod Achilles" appeared after the fact.
They thought she was a stupid girl and took advantage of it.
Meanwhile, she raced for five years and even decided her career path.
She felt like her feet were being destroyed and she was angry.
So after getting home...
"Don't say anything randomly, you liar!"
She hated her father like that and hadn't spoken to him since that day.
Aki's tantrums have been common for a long time. It was common for her to be stubborn for days on end.
However, after a week, her head began to get cold. There was no doubt that her father had said the "Achilles" thing for Aki's sake. Everything her father did was always for Aki. She knew it very well. So, she was trying to find the right time to make peace.
At that moment an accident occurred. Her father died while Aki called him a liar.
She has always regretted that. So when he died, she wanted to tell him that.
In fact, she tried to say it out loud now.
"What dad said was true."
"I'm fast. I won't lose to anyone."
She finally she could say it.
She was glad she could say that.
She thought that when she died, her father would come pick her up from the afterlife and apologize to him directly, but that didn't seem to be the case for her.
However, the flow of light surrounded her body. She was sure her father would be at the end of that trend.
In time, she too will merge with that flow and be a part of it.
"Kame-chan, wake up, wake up!"
Someone was shouting in her ear.
"Because I'm not dead yet! I'm not dead yet!"
"Uh... Sagawa...?"
A howling wind. The cold water splashed on her body. There was no ground under her feet and Sagawa was supporting her body.
"Aki!"
"Kame-chan!"
She heard voices of people coming from below. Masaru and the students. They looked small like a pea.
(What kind of situation is this...? In the air?!)
It is said that Sakawa Jingi is training in a shaman-like profession that has been passed down in this area and that she is capable of using a variety of mysterious techniques.
It seems that just now, with that power, Aki, who had fallen into the river, was swept away like a tornado, along with the river water.
The height where Aki is is probably about 10 meters, much higher than the breakwater.
"Hiratome-san! I'll send you Kame-chan, so please take her!"
Saying that, Sagawa let go of her hand.
"What?! Sagawa!"
It seems that the power of the "tornado" is still at work, and Aki is carried away by the wind as she loses altitude and falls into the arms of Masaru, who runs towards her.
On the other hand, Sagawa fell almost vertically, probably because he focused more on Aki, and a large column of water stood on the surface of the water.
"Wah, Jingi is down!"
"Help, help!"
Behind the commotion of the students...
"Are you okay, Aki?"
Masaru said, looking at her face.
Aki looked at that face again without understanding.
(If you look closely, they don't look much alike.)
Masaru has more of a monkey face, but he is much more decent than Sagawa.
Well, he could be among the pretty boys. A monkey is a monkey, but a cool monkey.
She was vaguely thinking about those things.
+++++++++++
The next year, spring.
Aki became the official teacher of the third year class. Since this is an improvement over the previous year, the student lineup will remain the same.
She thought there would be some excitement like, "Sensei, are you by any chance going back to the mainland?", but that wasn't the case at all.
When Aki disclosed it...
"Isn't that the kind of thing that happens in old movies? Around the Showa era."
Kazehayashi said.
"Kame-chan dreams about the island too much."
And Ranko Kanazaki.
"We will most likely graduate and this dilapidated school will be gone next year."
"Kame-chan is moving to Ichinoshima school, right?"
"Oh, yes."
Aki said.
"You are also students of that school, so if something happens, you should go there."
"However, I have no attachment to my alma mater. It's not like I went there."
And...
"I also wanted to go to a high school in the city...!"
Junnosuke Mizutani. He seemed really sorry.
"Junnosuke, you dream about the city too much."
"Is Ichinoshima really that big a city?"
"Because... there is also a Starbucks in Ichinoshima..."
"No, it doesn't make any difference either way."
Aki said.
"It's like it's connected by a single train, so I think it's quite convenient no matter where you live... You guys will stay in your hometown even after you graduate, right?"
"Oh, my love for my hometown is burning."
"Instead of worrying about us, what will happen to Kame-chan in the future? Are you going to be a teacher in Ichinoshima forever?"
"Oh, that's right! I would like to know what you are going to do with Hiratome-san."
"Ah..."
The incident that winter where "Kame-chan ran away from her fiancé and jumped into the winter river" became a rumor throughout the island as a serious incident, but the opinions of the students who saw the scene were generally unanimous.
They said...
"A troublesome woman like Kame-chan, if there is a man who is okay with that, then she should do whatever she wants, including marriage. No, she should do it. It would be a once in a lifetime opportunity."
"If you don't like him, say no clearly. In any case, it's not good to put pressure on others."
In short, Kame-chan is bad at facing her own problems properly.
That's why Aki faced her problems in a relaxed way.
"Yes, well... Masaru is still very active, so I don't think he's getting married."
"There are the Olympic Games."
"I thought it would be a good idea to have someone to support me once I was done with all that and retired."
"Hey, what are you talking about, Kame-chan?"
"Why are you trying to get on board at that time?"
"Isn't this the time to support you?"
And...
"So, let's go, Kame-chan."
Sagawa peeked out from behind the wall at the entrance to the classroom.
"You can ask Hiratome-san to come here and stay in Ayaka forever. You can live in Ichinoshima or Ninoshima, whatever you want.
"Eh?"
The idea wasn't bad. Aki looked up at the sky and thought:
"No, it's not that I want to live there forever, and I'll probably get bored soon."
"As expected, that is the truth."
"Well, although I'm not wrong..."
"That's rude, Kame-chan!"
As the students criticized Aki, Sagawa laughed out loud.
"There is nothing to offer. Rich nature, simple life, obedient students. Besides..."
He lifted the square bottle he had hidden so that it was level with his face.
"Delicious salmon~♪"
"Yes, there it is! Mizutani's father brought it yesterday."
"Oh, yes. Good whiskey."
"Hey, if it's a souvenir for the owner, you said you'd make sure to prepare it properly. Why did you bring the "nice guy" without permission?"
"Why...?"
Sagawa with a serious face.
"...Because it's interesting."
"Ah... Sakawa!"
"Hahaha."
The usual chase began.
Sagawa runs back holding a sake bottle to his chest, while Aki runs after him.
The students said as they saw the two cross the schoolyard, raising a cloud of dust.
"Both Jingi and Kame-chan are very cute."
"I never get tired of cosplaying Tendon or Showa sketches. It's the same story."
"It looks like we'll be doing the same thing in five or ten years."
Under a clear sky, a cloud of dust passed through the school gate and headed down the road towards the coast.
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talonabraxas · 2 years
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Transcendent Etude 2 by ForgetDeny Entering the Solar Plexus The human body is profound beyond the comprehension of the mind. Medical doctors operate on the physical side of existence whereas the inner observer looks through the feelings of experience for the truth behind the form. The psychic centres within the body (sometimes referred to as the ‘chakras’) function as a totality of being. The psychic centre which is the portal to the cosmic levels of mind is the solar plexus; this small but highly sensitive region beneath the breastplate is the doorway to reality. To cross this threshold is to unite with the mystery of life and the secret of death. Love enters existence through the solar plexus and is the place where attraction to the beauty of other forms of life is first registered.The idea of entering the body in meditation is to make conscious the interior world of the psyche. This speeds up the frontal intelligence, which functions at a reduced level when identified with the movement and objects in the material world. The entry into the solar plexus is helped considerably by attending to any problem areas in the circumstantial outer life that would cause an emotional disturbance in the body. Then it’s possible to put the focus of attention on the solar plexus for longer periods without thought or distraction.The breakthrough happens when a pulse is registered which is not unlike the heartbeat, only this originates from deep inner space. However there is usually no discernible sensation until entering the body in stillness and humility becomes a regular practice in the life. This is because it’s the part of the body which is nothing that can be described or defined, and yet this apparent absence of feeling is a highly energised soul centre. The difficulty is that the emotions gathered around the chest, together with discursive energies arising from the stomach region, tend to smear the aperture of the plexus centre.When the frontal intelligence approximates the state of consciousness, the separation between inner and outer realms unites. Immediately, the perception passes through the solar plexus (often experienced as an accelerating at tremendous speed) into the pristine blackness of timeless inner space. This is intuited to be something beyond the normal boundaries of human experience, and is an introduction to reality which inspires the individual to travel onwards into the solar level of mind. The external solar system parallels with remarkable precision the journey of the soul towards cosmic consciousness. However, uninterrupted access into the planetary space through the solar plexus is only possible after having faced and crossed the threshold of the first cosmic body nearest the earth – the moon.The space between the earth and moon symbolises the subconscious realm, which represents everything that can be known and described by the human mind. As formless life enters existence on the time waves of terrestrial mind, the impersonal subconscious is superimposed with the lunar essence, without which life as sensual existence could not have evolved. The orbit of the moon creates a transcendent ring of celestial consciousness which surrounds the earth as the principle of nature. The lunar plasma engenders a quickening of the vital life force, which breaks down the original matter of the earth into the sap and flow necessary for organic life to flourish. The purpose at this evolutionary phase of life is to exceed the orbit of the moon, not externally in a spacecraft, but inwardly so as to neutralise the gravitational pull for recurrence in the world.The pull of the spirit is not unlike the medium of gravity, which draws all things back to the source of original power. As cosmic beings, we came out of the solar plexus into the body consciousness and, similarly, would return the same way at death; but this is rare in these materialistic times. The more common exit at the termination of the physical body is through the cranium, which necessitates a further process of purification. Beyond the moon the quality of inner space, having been divested of past, is infused with the consciousness of the other planets, which creates a spiritual line of power to the nucleus of the sun. In passing through the solar plexus, and then through the solar principle of the Sun, the being is finally united with its alter ego at journey’s end – or the end for now of a particular phase of mind.
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stuffed-starfield · 6 months
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“Sorta, what they did was decrease the mass of an object using it to increase acceleration, such as a ship, they were basically huge FTL drives. The FTL drives I’m used to used this thing called Element Zero, people call it eezo, to essentially do what Mass Relays do but on a smaller scale”
"Fascinating, so you utilise this element to make your ships light enough to be catapulted along as lightspeed? A very different thing to what we do here. Well, Starborn use a much more refined version of what the humans call a Grav Drive. I'm not sure how they really work, but they apparently use some sort of gravity manipulation to rip a hole in reality and pull the vessel through it. The original prototypes were very messy. Sadly for humanity, Earth was all but destroyed by their testing." She explained.
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a-mag-a-day · 1 year
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MAG 96 - mowing the lawn
Without thinking about a-mag-a-day this morning, I took my Breekon & Hope shirt and put it on! :D
Ah yes, the soundscaping of sitting in an empty depot!
"Statement of Alfred Breekon" / "eventually I cracked; held out my hand: 'Arthur Breekon at your service. Who might you be?'" - Wait what? So is it Alfred or Arthur now? Did I miss something?
Oh this is so cool, at the part of "they started to make deliveries" you can hear the engine of a motorcycle accelerating in the background!
"I think I might even be paying them, though it’s hard to tell." - Lol.
Bit of a short statement, but really cool. I like the eeriness of the moment when they first appeared and the anticipated dread in "they started to make deliveries" and what followed after that.
What was that box…? Sounds of shifting sand, seems to be heavy but can be picked up with ease, it has a gravity to it? Sounds a bit like it could be the Buried. But bite marks working themselves free from the inside out? Hunt? Corruption?
"and today it was topped with a crisp brown envelope addressed to me, containing this statement. A gift from Elias, no doubt. He could have sent this to me any time, filled me in on Breekon and Hope, but no. I had to find it myself, just in time for him to show me he knew all about it. Cocky prick." - God I hate people like these xD I had a few teachers who were always like "that's not how it's done. That's also not how it's done" but failed to ever instruct me how to do it. I had to figure it out myself.
SARAH "It’s Elias now, then? JON [Whispering] "What?" - <.<
JON "Are you the same Sarah Baldwin that disappeared in Edinburgh in August 2006?" SARAH "Some of her. Skin. A few memories. Not on the inside." - And there's the explanation why Daniel Rawlings in the taxidermist shop doesn't look like the Daniel Rawlings from Edinburgh. -JON "Did you go as part of a filming expedition to the Cambridge Military Hospital?" SARAH "A mistake. Thought I’d have fun with some over-curious idiots, but it turned out I had trespassed. I paid for it." - Even though she says it loud and clear, when I was first listening I still didn't understand what happened at the CMH. Later, with more knowledge of the Fears, their dynamics etc, it becomes more apparent.
JON "So, what, now you sell dead animals? What is this place?" SARAH "The Trophy Room. A taxidermist shop in Barnet. It says above the door. Surprised to meet an Archivist who can’t read." JON "No, I –" [DAISY LAUGHS] DAISY "Nice." - Hahaha, the first a bit more lighthearted moment with Jon and Daisy! Also clever way to counter the Archivist's compulsion. Give obvious answers to vague questions.
Sasha is and will always be a weak spot of Jon. The first one he lost.
SARAH "The old woman, the one before you. She stole it. She killed Daniel, and took it." - Okay wait, I thought Not!Sasha met up with Daniel Rawlings and took a photo of him? What that already a different Daniel Rawlings?
DAISY "Come on. Before the Met get here." JON "Whatever you say." - Aw, that sing-song in Jon's voice. Is this already meant to show that these two could have a great dynamic if Daisy wasn't blinded by the Hunt?
Sarah knowing about Elias is game recognizing game
Also yeah, I think not sasha probably took a photo with someone else
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California Reservoir Rebound Shasta Lake, California’s largest reservoir, filled to nearly 100 percent capacity in May 2023, reaching levels not seen for four years. Since 2019, a prolonged period of extreme drought resulted in dwindling reservoir levels. In the early months of 2023, heavy rains and meltwater from an above-average mountain snowpack caused a notable turnaround. The rising water level is apparent in the image pair above, which shows Shasta Lake on November 18, 2022, and May 29, 2023. On November 18, the lake stood at 31 percent capacity, according to the California Department of Water Resources (DWR). By May 29, it was 98 percent full, and the tan fringe, or “bathtub ring,” around its perimeter had vanished. The images were acquired by the Operational Land Imager (OLI) on the Landsat 8 (top) and the OLI-2 on Landsat 9 (centre). The series of images below shows the progression of the lake’s rebound. A thin bathtub ring was still visible on January 29, 2023, when the OLI-2 acquired the center image. On that day, the lake stood at 56 percent of capacity, or about 87 percent of the historical average for that time of year. The color of the water in the center image likely appears greener because of suspended sediment. In the right image, some portions of the lake surface appear lighter due to an optical phenomenon known as sunglint, and suspended sediment may also be present. Lake Oroville, the state’s second-largest reservoir, was also near capacity on May 29, at 97 percent full. Both Lake Oroville and Shasta Lake are critical not only for water storage, but also for flood control, recreation, irrigating cropland in the Central Valley, and preventing saltwater intrusion into the Sacramento-San Joaquin Delta. Full reservoirs do not ensure plentiful water for years into the future. The past four years are a testament to how drastically reservoirs can change over the course of one or two years. In addition to the many demands for water, lake levels need to be drawn down to create capacity for flood control in wetter seasons. The California DWR is collaborating with other agencies to incorporate better forecasting and observation technologies in order to optimize water releases. Plentiful surface water does not necessarily equate to replenished groundwater stores. In California’s Central Valley, groundwater may account for two-thirds of agricultural water use during drought years. A recent study using data from NASA’s Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On satellite missions found that groundwater depletion in the Central Valley has been accelerating since 2003. Officials in California are working to leverage the recent influx of water. While some groundwater recharge happens naturally, resource managers can employ other strategies to send water underground, such as diverting it into canals or ponds and injecting it into the subsurface through wells. NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. Story by Lindsey Doermann.
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usafphantom2 · 4 months
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DURING THE EARLY DAYS OF TESTING FOR THE LEGENDARY SR-71 BLACKBIRD, THERE WERE SOME HARROWING MISHAPS, THE DETAILS OF WHICH HAVE RARELY COME TO LIGHT.
ON JANUARY 25, 1966, TEST PILOT BILL WEAVER AND LOCKHEED FLIGHT TEST RECONNAISSANCE AND NAVIGATION SYSTEMS SPECIALIST JIM ZWAYER EXPERIENCED THEIR PLANE VANISHING AROUND THEM WHILE EXECUTING A TURN… AT MORE THAN 2,400 MILES PER HOUR. Butch Sheffield my father was in the flight control center when he got the call about this SR 71 breaking apart. He was told the details about Jim breaking his neck so Dad said Jim in a way saved his life. When he was forced to eject from an SR 71, April 13, 1967. He pushed his head back fighting against the G-forces so that he wouldn’t break his neck.
The most memorable flight occurred on Jan. 25, 1966. Jim Zwayer, a Lockheed flight test reconnaissance and navigation systems specialist, and I were evaluating those systems on an SR-71 Blackbird test from Edwards AFB, Calif. We also were investigating procedures designed to reduce trim drag and improve high-Mach cruise performance. The latter involved flying with the center-of-gravity (CG) located further aft than normal, which reduced the Blackbird’s longitudinal stability.
We took off from Edwards at 11:20 a.m. and completed the mission’s first leg without incident. After refueling from a KC-135 tanker, we turned eastbound, accelerated to a Mach 3.2 cruise speed, and climbed to 78,000 ft., our initial cruise-climb altitude.
Several minutes into the cruise, the right engine inlet’s automatic control system malfunctioned, requiring a switch to manual control.
Without proper scheduling, disturbances inside the inlet could result in the shock wave being expelled forward–a phenomenon known as an “inlet unstart.”
The ejection seat had never left the airplane; I had been ripped out of it by the extreme forces, seat belt, and shoulder harness still fastened.
“Can I help you?” a voice said. Did I hear things? I must be hallucinating. Then I looked up and saw a guy walking toward me, wearing a cowboy hat. A helicopter was idling a short distance behind him. If I had been at Edwards and told the search-and-rescue unit that I would bail out over the Rogers Dry Lake at a particular time, a crew couldn’t have gotten to me as fast as that cowboy pilot had.
The gentleman was Albert Mitchell, Jr., owner of a vast cattle ranch in northeastern New Mexico. I had landed about 1.5 mi. from his ranch house–and from a hangar for his two-place Hughes helicopter
Bill Weaver was an SR 71 test flight pilot; he survived the crash. There were problems with the Faceplate on his helmet that needed to be corrected.. At 80,000 feet the temperature outside is -65°. Which is near the maximum altitude of a potential bail-out.
Bill Weaver was unable to see out of his face plate because of the ice buildup. An ejection out of the world's fastest man-breathing airplane is scary enough but not being able to see is terrifying!
His face plate was frozen. The result of this accident a heated face plate was manufactured, that required a battery pack and that worked.
There were several more accidents over the next 20+ years and all of the Air Force officers would survived their ejections. The only unfortunate death occurred to a test pilot who broke his neck.. Mitchell said he’d check on Jim. He climbed into his helicopter, flew a short distance away and returned about 10 min. later with devastating news: Jim was dead. Apparently, he had suffered a broken neck during the aircraft’s disintegration and was killed instantly. Mitchell said his ranch foreman would soon arrive to watch over Jim’s body until the authorities arrived. here is the rest of the article where I found most of the information. chuckyeager.org/news/sr-71-dis…
Linda Sheffield
@Habubrats71 via X
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michaelgogins · 1 year
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FTL
FTL, as most readers will know, is the science-fictional acronym for faster-than-light travel.
A very common idea is that special relativity forbids FTL because accelerating any mass to the speed of light requires an infinite amount of energy. Which is true.
However, I just watched this video talk by Sabine Hossenfelder suggesting that this common idea is, to put it bluntly, full of holes if extended to cover the real world.
I was expecting her to expound on warp drives, which are suggested by solutions of general relativity theory inspired by the apparent fact that our universe inflated space much faster than the speed of light for a very short time at the very beginning of the Big Bang.
But no, Hossenfelder's talk is very interesting in a very different way. She is a real physicist with publications, even though she is not a tenured professor, and her specialty is the phenomenology of quantum gravity, although she works in other areas as well.
I myself am no such specialist and so my understanding of her post, though it is aimed at non-specialists, has got to be limited. But the things I take away are:
Objections to FTL are most often motivated by special relativity, but our best theory of gravity is general relativity.
Hossenfelder is suspicious of the singularity represented by an infinite amount of energy being needed to accelerate a mass to the speed of light. She seems to think this is a big hint that not only special relativity, but also general relativity, are incomplete and misleading.
Current cosmology based on general relativity features a co-moving frame within our horizon, which Sabine thinks obviates arguments about temporal loops arising from FTL.
I found Hossenfelder's talk to be most impressive, and it has affected my own thinking about FTL.
As a one time aspiring science-fiction writer, I always wanted to base my writing on the best science, and to my mind, the best science pretty much ruled out FTL. But now, not only Hossenfelder's talk, but also continued attention by real physicists to warp drives and wormholes, make me aware that objections to FTL are based on assumptions that skip over a number of genuine gaps in our understanding.
I therefore give myself permission to go back to a future in which humanity has invented and uses FTL. It's highly speculative, but it can't be ruled out; therefore, it is a good premise for an optimistic future (or a pessimistic one -- perhaps UFOs are warp vessels spying on us to see if we need to be exterminated!).
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dionysian-sadness · 19 days
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“Nowadays, one no longer says: "You've got a soul and you must save it," but: "You've got a sexual nature, and you must find out how to use it well."
"You've got an unconscious, and you must learn how to liberate it."
"You've got a body, and you must know how to enjoy it."
"You've got a libido, and you must know how to spend it," etc., etc. This compulsion toward liquidity, flow, and an accelerated circulation of what is psychic, sexual, or pertaining to the body is the exact replica of the force which rules market value: capital must circulate; gravity and any fixed point must disappear; the chain of investments and reinvestments must never stop; value must radiate endlessly and in every direction. This is the form itself which the current realization of value takes. It is the form of capital, and sexuality as a catchword and a model is the way it appears at the level of bodies.
Besides, the body to which we constandly refer has no other reality than that of the sexual and productive model. It is capital which gives birth in the same movement to the energetic of labor power and to the body we dream of today as the locus of desire and the unconscious. This is the body which serves as a sanctuary for psychic energy and drives and which, dominated by these drives and haunted by primary processes, has itself become primary process--and thus an anti-body, the ultimate revolutionary refer-ent. Both are simultancously conceived in repression, and their apparent antagonism is yet another effect of repression. Thus, to rediscover in the secret of bodies an unbound "libidinal" energy which would be opposed to the bound energy of productive bodies, and to rediscover a phantasmal and instinctual cruch of the body in desire, is still only to uncarch the psychic metaphor of capital.
This is the nature of desire and of the unconscious: the trash heap of political economy and the psychic metaphor of capital.
And sexual jurisdiction is the ideal means, in a fantastic extension of the jurisdiction governing private property, for assigning to each individual the management of a certain capital: psychic capital, libidinal capital, sexual capital, unconscious capital. And each individual will be accountable to himself for his capital, under the sign of his own liberation.”
– Forget Foucault, Jean Baudrillard.
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qaylikekay · 1 month
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I am not a physicist so take this as the wild speculation that it is and consider it fun sci-fi, but what if dark energy is the opposing force to gravity? In the same way that an object on a desk pushes on the desk and is pushed by the desk, matter curves spacetime (creating the apparent force of gravity) and like a trampoline being pulled, spacetime stretches against this curve (creating the apparent force of dark energy).
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Immediately preceding the big bang dark energy is at it's highest as matter is concentrated in a single point, causing it to explode outward. As matter rapidly distributes dark energy decreases as warping of spacetime decreases, expansion of the universe slows. Then as matter begins to recoalecse into stars, galaxies, black holes, space time is warped again in these areas and dark energy increases again giving us the acceleration of the expansion of the universe. We're essentially seeing a pendulum swing, matter comes together, dark energy goes up, matter spreads out, dark energy goes down, allowing matter to come together again, etc. Eventually it'll settle into the heat death of the universe, but with uniform distribution of matter dark energy will be weak or nill, allowing particles to slowly begin accelerating back towards each other. As they begin to smash into each other dark energy goes up, but everything is already moving towards each other, dark energy can't keep up with the acceleration particles already have due to gravity. Eventually everything reconvenes at a single point of white-hot matter and energy. With no pre-existing speed or acceleration to over-come dark energy is free to kick everything outward in another big bang. Another breath of the universe.
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apricusnights · 1 month
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Chapter Four: When It Rains It Pours.
Fisher: "Attention, this is Commander Fisher! We're in pursuit of a fleeing suspect, currently exiting Delta Town and heading Northwest. Suspect is driving what appears to be a modified Ciar Phantom motorcycle. I need any available units to setup checkpoints. Do not let the suspect through."
Jae: "Uh Ma'am?"
Miranda looked ahead in time to see the suspect ramp up over an offramp and land on top of the train tracks.
Fisher: "Shit, better hang on Aryl, this isn't going to be pretty.."
Accelerating as much as possible she managed to jump their vehicle up and on to the tracks as well.
Fisher: "Suspect is using the train tracks in an attempt to evade us, we are in pursuit. Suspect seems to be heading towards the Diamond District..."
The motorcyclist swerved aside to dodge on oncoming train..something their current vehicle wouldn't be able to do. Left with no choice she swerved into the small barrier in between tracks and managed to get the car up on it's two right wheels. The left wheels scraping along the side of the passing train.
Jae: "Pretty sure we're gonna get a bill for that..."
The car finally landed back on four wheels with a thud as the motorcyclist jumped off the tracks. Undeterred by a ridiculous concept such as gravity, Fisher followed. The car landed on the ground..quite a bit worse for wear but still in pursuit.
Jae: "There! They just went down that alley! To the right!"
Before Fisher had a chance to react she heard something land on top of their car. A second later, a scythe came slicing down, nearly splitting the car in half and causing Fisher and Aryl to dive out.
The wrecked pieces of the car slid to a stop as a woman wearing a white rabbit mask and wielding a scythe leapt down.
Fisher: "Still alive Aryl?"
Jae: "Yeah, though I don't know if I want to be..."
The motorcyclist stopped and got off of the bike, making their way forward and revealing themselves to be wearing a slightly different white rabbit mask.
White Rabbit (Biker): "Well THAT was an exhilarating little chase! Kudos for keeping up. Unfortunately, you're about out of time. Someone call the fat lady, she's on in five!"
White Rabbit (Scythe): Spins her weapon around and begins to approach Fisher and Aryl.
Meanwhile, inside the nearby nightclub:
Van: "I was having a nice time!" Kicking someone aside.
Lye: "WITH CHIMERA?! She was going to kill you with lipstick you moron!" Lye was currently fighting Chimera though she wished she had her shoes, the dagger thrown to her by Mel would have to do.
Van: "I can think of worse ways to go!" Van broke off a table leg and swung it as if it were a bat. "Guess it'll work!"
Nava: "Do dates with you always turn out like this?"
Ajax: Currently lifting two people over his head and throwing them. "Only the good ones baby!"
Bonnie: "The weapon check room!" Finally having managed to fight through the various brawls going on. She knocked out the last person in her way and kicked open the door...
Chimera took a swing at Lye with her poisoned daggers only to find herself blocked by Amias? The dagger seemed unable to penetrate the strange sort of energy armor that had surrounded his body. Before she had a chance to strike Amias backflipped and kicked Chimera away from Lye.
Lye: "You can do that?!"
Amias: "Apparently?!"
Viridian: "Where did you learn to fight.."
Amias: "Growing up with as many older sisters as I did...you learn things out of necessity."
Nerys: "I need you to throw me!"
Van: "What?!"
Nerys: "Like Hecaball! Throw me up there!" She pointed to Mel upstairs fighting against a masked man.
Virdian and Van braced themselves before grabbing Nerys and throwing her through the air. Nerys landed behind the masked man and immediately punched him, causing him to stumble and get knocked back by Mel.
Bonnie came running out of the weapon check room and tossed something to everyone. Nava ended up catching a staff of sorts.
Ajax: "Convenient, we were just working with that."
Nava: "I bonked myself in the head three times in a row.."
Ajax: "But you got it right the fourth time, you can do this Nava. I know you can."
Outside:
Fisher and Aryl were struggling against the rabbited masked scythe wielder. Though Fisher had managed to activate a secret emergency beacon and hoped her ally wasn't far away. Aryl had noticed the other rabbit masked individual run over to a fire escape, making their way to the top of a building.
Fisher: "Go after them, don't let them get away. Who knows what they took from the escape craft!"
Aryl nodded and began to pursue the suspect while Fisher attempted to fight the scythe wielder.
Inside:
Masked Man: "Ridiculous..I don't have time for this.." Pressing a button on his aShine before dropping several spheres on the ground that exploded and flash banged the room. Nerys and Mel were blinded momentarily as the masked man rushed further upstairs.
Just as Van took a swing at her Chimera blew a kiss at him and shot a grappling cable up to the rafters from a wrist mounted device. She was pulled up quickly and raced to join her partner.
Lye: "Oh no, not letting that bitch get away again! Upstairs!"
Outside:
By the time Aryl had reached the roof he noticed a rather advanced looking helicopter seemingly decloak right above the building. He raced to tackle the rabbit masked suspect only to be knocked down by the scythe wielder who had used some sort of insane speed to reach the top of the building.
The masked man and chimera would soon make their way to the roof along with several of their followers. The scythe wielder rose up her blade intending to strike Jae but was suddenly knocked back as Miranda dropped down to help Jae up.
Miranda: "Good timing. Thanks for the lift."
Oct: Turning off his jetpack and landing on the ground. "Don't mention it. Been trying to find this one anyway.."
As if things weren't chaotic enough Van, Lye, and Nava finally made their way up followed by Ajax, Amias, Mel, Nerys, Viridian, and Bonnie.
The brawls seemed to pick back up right where they left off. Nava to her surprise managed to knock down several people with her staff, even blocking an attack meant for Lye. Van and Jae stood back to back as they took on whoever rushed at them.
Ajax: "Who the hell are you?"
Jae: "Jae Aryl. PWSB."
Ajax: "Little group fights pretty well together don't they?"
Bonnie: "Seems that way.."
Ajax: "Wait a second...Van, Nava, Lye, Jae? VNLJ..nah doesn't sound like anything."
Nerys: "VNLA! Vanilla!"
Ajax: "Sweet like Vanilla!"
Van: "I like this guy!"
Nava: "You and I are having a talk later!"
Ajax: "Worth it.."
Meanwhile the masked man and chimera made their way up to the waiting helicopter.
Van: "I feel like you're mocking me with that stupid mask!"
White Rabbit (Biker): "Not like yours are natural either dumbass. Surprised your clan even allowed you to have the ceremony!"
Van: "How did you.." Van was knocked back during his moment of confusion, almost stumbling off the side of the building but being grabbed by Ajax and pulled back.
White Rabbit (Biker): "Yo, time to jet baby!" Grabbing a rope and being pulled up to the helicopter.
The scythe wielder spun around rapidly, knocking down everyone around her except for Oct who somewhat reluctantly landed a punch to her mask, breaking part of it and revealing a silver eye.
A rocket was fired from the helicopter, forcing Oct back as the scythe wielder was pulled up by another rope.
In one last attempt Oct activated his jetpack, flying up and landing inside of the helicopter. Only to stand face to face with someone wearing similar but more advanced power armor. A rather odd looking helmet covering their head.
Before he could react he was grabbed by the throat and lifted up.
White Rabbit (Biker): "Ooops, sorry, we're at maximum weight capacity!"
The being in the power armor reached back with their other hand and slammed their fist into Oct's chest making some of his armor's systems start to go haywire. They'd let go and send Oct falling down to the roof of the building with a thud.
The helicopter seemed to cloak again and vanish from sight as everyone began to recover. PWSB sirens blaring in the distance.
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robotlandscape · 2 months
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A physics student tries to prove for themself that the earth might be flat
I realized now that I have always been told that the earth is round, and I've never doubted it. I can recall certain experiences which can be explained by the earth is round, such as being on the top of a mast of a sailboat while in the ocean and *probably* seeing the curvature of the earth, but for the sake of being a good scientist and skeptically taking in all information I'm given, let's see how I can prove whether the earth is flat or round!
https://wiki.tfes.org will be my primary source.
- Universal Acceleration: They claim that dark energy accelerates the earth upwards at 9.8 m/s/s, leading to the feeling of gravity. They are correct in saying that by relativity, it's possible for this to be true, since observers in an accelerated frame cannot differentiate acceleration and gravity, therefore they are the same thing. This is all true, except if disk-earth was accelerating upwards, light directly above us would get gradually more and more blue shifted over time, meaning that we would have extremely intense gamma rays raining down on us from above. (If you need convincing, see this cool applet as a demonstration.) This is not the case, therefore universal acceleration cannot be true.
- Davis Model: Slightly different explanation for a flat earth involves an infinitely long disk with a finite mass, derived to be able to have the same acceleration due to gravity as earth. However, the derivation uses big-G (universal gravitational constant), derived with Newton's radius-based gravity theory. That makes the theory dependent on a constant derived under the assumption that bodies are attracted to each other radially. In addition, they wind up deriving that g = 2 pi G [density], where density is mass per unit area. I get a density of about 23.38 billion kilograms per square meter. Given that we can measure a rock and get its density (I took an example I googled, a density of 1600 kg/m^3, but feel free to just weigh a rock and use Archimedes principle to find the mass of a rock), that gives a thickness of earth's crust as being approximately 100 nm (nanometers, 10^-9 meters) long. Dig a hole and see that earth's crust is thicker than this, therefore the Davis model cannot be true. Plus, sunrise and sunset exist, and there isn't a neat little hole that the sun fits into in the earth's crust that we know of.
Bedford Level Experiment: often used as evidence for a flat earth. It maintains that a particular canal in England, with slow moving water, has a 6 mile long straightaway track which should show the curvature of the earth if you have objects held at certain heights. In this particular example, a man took a telescope held 8 inches above the surface of the water and was able to see a pole 5 feet long just fine. I'm in a unique position where I have the math skills to derive this myself, so I did it. I was confused initially, because I actually did do the math and found that the pole shouldn't have been visible. My life flashed before my eyes: were the flat earthers right the whole time?
...But according to Wikipedia, when you take into account atmospheric refraction, the math works out fine and you get the correct curvature. I found the equation for atmospheric refraction and I got that indeed the light would make things from below the horizon visible. (The actual answer I think requires doing out the ray-tracing, and I'm not yet competent enough to figure that out with back-of-napkin math. If you're a flat earther, feel free to continue my math and prove me wrong, I've attached my work.)
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Sunrise and sunset: The wiki contradicts itself -- first it says that the sun spins around the north pole, and then it offers a link saying "There are several potential theories for the apparent effect of the Sun's rising and setting.". Visiting this link leads to a stub, which basically offers two ideas: one is that earth is spinning like a coin in space (contradicting universal acceleration and the Davis model). The explanation is electromagnetic acceleration (which is basically just a weird tailor-fit case of spacetime bending to make it look like light from the sun is bending around?).
Honestly, any attempts to bend how light works above the earth will be treated as false for me -- If I may be so bold as to assume that A. classical mechanics works, as in objects will move in straight lines when not exerted by any external forces, and that B. by observing that planets and the sun have different retrograde patterns (the path they follow in the sky) than the stars, C. the fact that we can dig holes, and D. the fact that we aren't being melted away by high-energy gamma rays, I conclude that the flat earth website is complete and utter bullshit. Classical mechanics also seems to work pretty nicely to predict all of these things, though, while general relativity helps explain why gravity behaves the way it does.
The earth is round. Thanks for reading.
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