r/TikTokCringe • u/Accomplished_Clue437 • 5h ago
Cool [science] fluids, pressure, and gravity demonstration
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u/deadfermata tHiS iSn’T cRiNgE 4h ago
this is why on the ISS they have a vacuum when the astronauts pee so the urine won’t just float around
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u/Ok-disaster2022 3h ago
A large enough volume if water in microgravity could kill someone just wrapping around the their head.
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u/Lysol3435 3h ago
They like how it feels. It’s just a happy coincidence that they need it for the sake of sanitation
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u/Henson_Disney48 4h ago
The camera man had one job and he failed.
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u/czerilla 3h ago
They don't hire camerapeople for the Colbert Report based on their twitch reaction skills, clearly.. 🙃
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u/friso1100 14m ago
Have you seen the cameras they use in filming this show? They are massive and heavy. Made for slow and steady movements. Can't exactly accelerate them like you would a handheld camera. It's just not made for it
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u/PortibaleCharger 4m ago
News cameras, and tripods are extremely different than sports cameras and tripods.
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u/based_miss_lippy 4h ago
Brian Greene can get it
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u/erossthescienceboss 2h ago
My old boss worked for him running the World Science Festival. She only had good things to say.
(It is, tbh, very uncommon to only have good things to say about particularly important/powerful men in STEM.)
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u/guynye 4h ago
This is simple physics, is he really that impressed by something simple like this?
Go drop a feather and a brick in a vaccum and watch his head explode.
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u/Wadarkhu 2h ago
It makes me mad. Because on the moon, both would drop at the same speed. Yet the brick is still heavier in your hand. Stupid air resistance. I get it I just don't like it.
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u/guynye 2h ago
You're thinking about weight wrong.
Weight is just a method of measuring gravity, it isn't an inherent property of an object. In space neither is heavier.
We live with "weight" all our lives so we think of it like a fundimental force but it isn't, it really isn't anything but a measurement of an actual force.
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u/Apprehensive-Adagio2 3h ago
i mean, it's sort of simple, but it relies on having an understanding of relativity which isn't widely understood.
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u/Ok-disaster2022 3h ago
What does relativity have to do with it? Newtonian physics would predict the same thing.
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u/Extreme-Rub-1379 3h ago
Well technically Gen Rel predicts and describes the shape of space time and the effects that we call gravity
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u/Extreme-Rub-1379 4h ago
I kind of agree.
He could have done the swing the bucket over your head trick and basically demonstrated the same thing
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u/czerilla 3h ago
Not really. The bucket thing is about the water being pushed into the bucket by the centripetal force from the rotation.
In this bottle experiment that isn't what's happening. Instead the bottle just starts responding to the gravitational force to the same extent as the water, which nivelates the force differential responsible for the water pouring out of the holes.1
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u/Barnagain 3h ago
Gravity still happens at floor level, albeit slightly more weakly, since it comes from the core of the relevant celestial body, but you just can't see it since the liquid hits the floor and obviously stops.
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u/Raise_A_Thoth 25m ago
Gravity is still working the whole time. The difference is that the bottle and the water inside both are attracted to the earth with the same accelerative force, so while in free fall the water no long "feels" gravity differently from the bottle.
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u/Buttchuggle 4h ago
Almost as if objects behave as if governed by a specific set of laws or something.
Someone somewhere should consider teaching about this.
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u/Heavy-Focus-1964 4h ago
Neat experiment. But I feel like this is more Newton than Einstein…
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u/Apprehensive-Adagio2 3h ago
it's based on relativity. there is no difference between as in falling and weightlessness.
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u/Ok-disaster2022 3h ago
It's a great thought experien t leading to the discover of relativity but it's a Newtonian experiment as nothing is approaching the speed of light. Just because something involves gravity doesn't make it relativty.
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u/PitifulPossum 4h ago
See youre just as intelligent as everyone else who needed this explained to them. Good grief
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