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Why is the hole in the ozone layer over Antarctica? Why does the ozone not diffuse into an even layer around the Earth?

902 upvotes • IronicOxidant

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Why do people say that right after the big bang, the Universe was very small? Wasn't the universe just as infinite then as it is now? Isn't it more accurate to say it was very dense?

902 upvotes • verbass

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Why is it that when a person gets kidney stones, he/she has a risk of getting stones again?

902 upvotes • FirmNaringenin7312

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The sugars that makes fruits taste sweet: are they mainly intra- or extra-cellular sugars?

901 upvotes • greenandbrown

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As the speed of two colliding particles increases, does the chance of quantum tunneling increase as well or remain consistent per head-on?

901 upvotes • pimpmastahanhduece

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If you just left out a tub of blood, would mosquitoes go for it? Or do they only know how to sniff out veins and go for blood that way?

901 upvotes • ByzantinePuppy

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Before Einstein, did physicists believe that the only constraint on how fast matter could move was available energy?

901 upvotes • transley

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What will happen when all the coral reefs die?

900 upvotes • aleczapka

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I have read the definition of one megajoule as equal to the energy of one ton moving at 100mph. The Naval railgun is at 33 megajoules. Does this equal 33 tons at 100mph, or 1 ton at 3300mph?

900 upvotes • WHATYEAHOK

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Ask Anything Wednesday - Engineering, Mathematics, Computer Science

900 upvotes • AutoModerator

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
Why is the hole in the ozone layer over Antarctica? Why does the ozone not diffuse into an even layer around the Earth?	902	IronicOxidant
Why do people say that right after the big bang, the Universe was very small? Wasn't the universe just as infinite then as it is now? Isn't it more accurate to say it was very dense?	902	verbass
Why is it that when a person gets kidney stones, he/she has a risk of getting stones again?	902	FirmNaringenin7312
The sugars that makes fruits taste sweet: are they mainly intra- or extra-cellular sugars?	901	greenandbrown
As the speed of two colliding particles increases, does the chance of quantum tunneling increase as well or remain consistent per head-on?	901	pimpmastahanhduece
If you just left out a tub of blood, would mosquitoes go for it? Or do they only know how to sniff out veins and go for blood that way?	901	ByzantinePuppy
Before Einstein, did physicists believe that the only constraint on how fast matter could move was available energy?	901	transley
What will happen when all the coral reefs die?	900	aleczapka
I have read the definition of one megajoule as equal to the energy of one ton moving at 100mph. The Naval railgun is at 33 megajoules. Does this equal 33 tons at 100mph, or 1 ton at 3300mph?	900	WHATYEAHOK
Ask Anything Wednesday - Engineering, Mathematics, Computer Science	900	AutoModerator