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

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is there a way to make a generator of varying RPM output a constant voltage?

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can you draw power out of the recharging port of a cellphone or other mobile device?

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can you have a electromagnet that counteracts the effects of a magnet coming near a computer?

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How can cold drinks (like redbull or Monster energy) have more caffeine than hot drinks (like tea or coffee) when caffeine concentration depends so strongly on temperature?

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Could an animal have and use Chloroplasts

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Are caves radioactive enough for a radiotrophic fungus to live in?

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What environment has more radiation, the surface of earth or underground?

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Just how much of a return do we get on the energy we put into cooking meat?

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How can the universe have a "cold" death if energy can't be destroyed or created, only change shape?

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Could anyone here answer a few questions on planetary rings?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
is there a way to make a generator of varying RPM output a constant voltage?	1
can you draw power out of the recharging port of a cellphone or other mobile device?	1
can you have a electromagnet that counteracts the effects of a magnet coming near a computer?	1
How can cold drinks (like redbull or Monster energy) have more caffeine than hot drinks (like tea or coffee) when caffeine concentration depends so strongly on temperature?	1
Could an animal have and use Chloroplasts	1
Are caves radioactive enough for a radiotrophic fungus to live in?	1
What environment has more radiation, the surface of earth or underground?	1
Just how much of a return do we get on the energy we put into cooking meat?	1
How can the universe have a "cold" death if energy can't be destroyed or created, only change shape?	1
Could anyone here answer a few questions on planetary rings?	0