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

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How can our brain recognize that the same note in different octaves is the same note?

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Why are there no complex chaemosynthesizer beings as there are complex photosynthesizer ones, the plants?

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Where does gravity come from? Was it something else before becoming gravity? And are large objects with a lot of gravity producing energy? Do black holes produce more energy than they let off?

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Can we really film individual attoms?

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If the spacetime is to some degree like a fabric, do we know how "tense" this fabric is?

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Why did evolution select tails out of adult frogs' bodies but then selected it "back" onto lizards bodies? In other words, why can't we find (to my knowledge) salamanders that are as terrestrial as the most terrestrial frogs?

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Since the image that gets to our retinas is upside down, is it mirrored horizontally too?

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Can a material be such a poor thermal conductor that I may touch it and, even if it's very hot, I won't burn myself, or even if it's very cold, I won't feel it?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How can our brain recognize that the same note in different octaves is the same note?	2433
Why are there no complex chaemosynthesizer beings as there are complex photosynthesizer ones, the plants?	1
Where does gravity come from? Was it something else before becoming gravity? And are large objects with a lot of gravity producing energy? Do black holes produce more energy than they let off?	1
Can we really film individual attoms?	1
If the spacetime is to some degree like a fabric, do we know how "tense" this fabric is?	1
Why did evolution select tails out of adult frogs' bodies but then selected it "back" onto lizards bodies? In other words, why can't we find (to my knowledge) salamanders that are as terrestrial as the most terrestrial frogs?	1
Since the image that gets to our retinas is upside down, is it mirrored horizontally too?	1
Can a material be such a poor thermal conductor that I may touch it and, even if it's very hot, I won't burn myself, or even if it's very cold, I won't feel it?	1