/r/askscience

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Only show posts with narrations

How did they weld before they had protective glasses/masks?

845 upvotes • rovli

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Are liquid abrasives (toothpaste, rubbing/buffing compound, etc) more effective in thinner layers?

844 upvotes • MissBelly

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Why isn’t our Jupiter a ‘hot Jupiter’?

844 upvotes • garryfisk

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Could a Solar system or Star exist outside of a galaxy?

843 upvotes • Hamzaboy

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Why is playing games fun?

843 upvotes • 2Punx2Furious

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If E=mc^2, my total energy is constant as my mass is constant. If I gain potential energy because I went up an elevator, my energy level changes but my mass is constant. What gives?

843 upvotes • Negropolis

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What is the smallest interval of time that today's technology can accurately measure?

842 upvotes • proboardslolv3

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What happens if you reflect more sunlight on to a solar cell with mirrors?

842 upvotes • jakkaj80

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If lung cells only last only 6 weeks, how comes if one stop smoking the cancer risk stay above normal for a decade?

841 upvotes • [deleted]

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Why do waterfalls sound like white noise? What’s the mechanism that causes this?

840 upvotes • Strange_An0maly

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
How did they weld before they had protective glasses/masks?	845	rovli
Are liquid abrasives (toothpaste, rubbing/buffing compound, etc) more effective in thinner layers?	844	MissBelly
Why isn’t our Jupiter a ‘hot Jupiter’?	844	garryfisk
Could a Solar system or Star exist outside of a galaxy?	843	Hamzaboy
Why is playing games fun?	843	2Punx2Furious
If E=mc^2, my total energy is constant as my mass is constant. If I gain potential energy because I went up an elevator, my energy level changes but my mass is constant. What gives?	843	Negropolis
What is the smallest interval of time that today's technology can accurately measure?	842	proboardslolv3
What happens if you reflect more sunlight on to a solar cell with mirrors?	842	jakkaj80
If lung cells only last only 6 weeks, how comes if one stop smoking the cancer risk stay above normal for a decade?	841	[deleted]
Why do waterfalls sound like white noise? What’s the mechanism that causes this?	840	Strange_An0maly