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Fermat's principle is an outcome of constructive interference of waves. It works both for classical and quantummechanical descriptions. E.g. check https://phys.
by MeteorMarc 4mo ago
Fermat's principle is an outcome of constructive interference of waves. It works both for classical and quantummechanical descriptions. E.g. check https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_III_-_Optics_and_Modern_Physics_(OpenStax)/01%3A_The_Nature_of_Light/1.07%3A_Huygenss_Principle https://phys.libretexts.org/Bookshelves/University_Physics/U...
- sumitkumar 4mo agoTrue, so the interference is the "computation"(heavy emphasis on quotes) which gives rise to the principle.
- pava0 4mo ago> a ray of light has to know where it will ultimately end up before it can choose the direction to begin moving in A ray of light doesn't know or choose because it has no agency, just like an apple doesn't know or decide to fall because of gravity. It's an anthropomorphization.