- #1
query_ious
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*disclaimer I am not a physicist
Had a weird thought the other day - when you focus light with a lens, for example a magnifying glass, you basically increase the 'concentration of photons' at a certain point, right? But then energy is conserved... so wouldn't focusing some of the light on one spot then create a 'lack of light' or shade on another, adjacent spot? And might this not create an intensity gradient = a heat gradient = something which could be mined for energy? I mean I asked a physicist friend who said that because of diffraction focusing light doesn't create an 'energy peak' at the focal point but rather a series of rings each of weaker intensity but this still sounds like a type of gradient to my untrained ears...
What say you oh great hivemind?
Thanks :)
Had a weird thought the other day - when you focus light with a lens, for example a magnifying glass, you basically increase the 'concentration of photons' at a certain point, right? But then energy is conserved... so wouldn't focusing some of the light on one spot then create a 'lack of light' or shade on another, adjacent spot? And might this not create an intensity gradient = a heat gradient = something which could be mined for energy? I mean I asked a physicist friend who said that because of diffraction focusing light doesn't create an 'energy peak' at the focal point but rather a series of rings each of weaker intensity but this still sounds like a type of gradient to my untrained ears...
What say you oh great hivemind?
Thanks :)