/u/Kazukaphur's posts in /r/askscience

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Is something only warm to the touch, i.e I touch with my finger, if that object is warmer than my body temperature? Or at what temp does something become warm to touch, considering when run roughly 37 C/98.6F?

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Maybe this isn't the proper place for this question but, If I'm not mistaken an alternator recharges a car battery while driving. Why can't there be something like that for electric cars and just recharging it's battery while driving?

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Why is a gasoline car battery able to be recharged from driving, but an electric car battery is not able to? Wouldn't there be a way to convert the energy from driving to recharge the battery?

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Are there any forms of economic classes among wild animals?

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Why are foods just as spicy going out as they were going in?

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Why can't engines run on water?

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Is there a chemical substance you can mix with hydrogen peroxide to make water?

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If part of an asphalt road had suddenly expanded this winter, to the point where a few short stretches are now like a mini rollercoaster, can that go back to normal if there isn't extensive structural damage? I assume the expansion is largely due to ice?

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Do batteries really go bad faster if you leave a device, like your cellphone or laptop, plugged in at full charge?

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Why is it bad or so hard on computers (PCs, PS4, etc) to have the power shut off without being shut down "properly"?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is something only warm to the touch, i.e I touch with my finger, if that object is warmer than my body temperature? Or at what temp does something become warm to touch, considering when run roughly 37 C/98.6F?	5406
Maybe this isn't the proper place for this question but, If I'm not mistaken an alternator recharges a car battery while driving. Why can't there be something like that for electric cars and just recharging it's battery while driving?	1
Why is a gasoline car battery able to be recharged from driving, but an electric car battery is not able to? Wouldn't there be a way to convert the energy from driving to recharge the battery?	1
Are there any forms of economic classes among wild animals?	1
Why are foods just as spicy going out as they were going in?	1
Why can't engines run on water?	1
Is there a chemical substance you can mix with hydrogen peroxide to make water?	1
If part of an asphalt road had suddenly expanded this winter, to the point where a few short stretches are now like a mini rollercoaster, can that go back to normal if there isn't extensive structural damage? I assume the expansion is largely due to ice?	1
Do batteries really go bad faster if you leave a device, like your cellphone or laptop, plugged in at full charge?	1
Why is it bad or so hard on computers (PCs, PS4, etc) to have the power shut off without being shut down "properly"?	1