/r/askscience

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How are the forces exerted on the human back by carrying a heavy object different from those exerted by unsupported breasts? And how does a bra redistribute force to relieve back pain/damage? [possibly NSFW] [x-post from r/AskEngineers] NSFW

592 upvotes • boobforces

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Are there currently any 'hints' of new physics being worked on?

592 upvotes • chucknorris10101

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Why don't protons repel each other out of the nucleus?

592 upvotes • DrewSuitor

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How does heat transfer work in a vacuum?

592 upvotes • The_Punned_It

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What is gained from having different blood types? [Biology]

592 upvotes • 1001barber

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If you took 100 liters of water at 80 degrees and mixed it with 100 liters of water at 60 degrees, would you get 200 liters of 70 degree water?

592 upvotes • panicattackk

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Since the speed of light is finite, how do we know that the galaxies’ shapes are really the way they appear?

592 upvotes • HAKRIT

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Do sleep walkers still get the same, sufficient amount of recuperation as if they slept soundly?

591 upvotes • HumbleWayfarer

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Why does paper stay folded once you fold or wrinkle it? And since placing heavy objects on paper can help smooth it out, how much force would you have to apply to a creased sheet of paper to make it completely "smooth" again?

591 upvotes • ghost_of_bb_king

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Can light itself go into orbit around black holes, and could we ever observe it happening?

591 upvotes • tabernumse

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How are the forces exerted on the human back by carrying a heavy object different from those exerted by unsupported breasts? And how does a bra redistribute force to relieve back pain/damage? [possibly NSFW] [x-post from r/AskEngineers] NSFW	592	boobforces
Are there currently any 'hints' of new physics being worked on?	592	chucknorris10101
Why don't protons repel each other out of the nucleus?	592	DrewSuitor
How does heat transfer work in a vacuum?	592	The_Punned_It
What is gained from having different blood types? [Biology]	592	1001barber
If you took 100 liters of water at 80 degrees and mixed it with 100 liters of water at 60 degrees, would you get 200 liters of 70 degree water?	592	panicattackk
Since the speed of light is finite, how do we know that the galaxies’ shapes are really the way they appear?	592	HAKRIT
Do sleep walkers still get the same, sufficient amount of recuperation as if they slept soundly?	591	HumbleWayfarer
Why does paper stay folded once you fold or wrinkle it? And since placing heavy objects on paper can help smooth it out, how much force would you have to apply to a creased sheet of paper to make it completely "smooth" again?	591	ghost_of_bb_king
Can light itself go into orbit around black holes, and could we ever observe it happening?	591	tabernumse