- #1
physics user1
I can't figure out why my demonstration of snell's law fails, that's the demonstration: (I used a photo)
I think it fails because the function t (HO) represents a line and so the concept of minimum is not defined, when I take the derivative and equal it to 0 I'm considering the case when the line is parallel to the x-axis (the first derivative gives me the angular coefficient and when I equal it to 0 the line is parallel) (considering as y the time and as x HO)
Is that the problem? ( I know the real demonstration but i want to understand why this variant doesn't work)
I think it fails because the function t (HO) represents a line and so the concept of minimum is not defined, when I take the derivative and equal it to 0 I'm considering the case when the line is parallel to the x-axis (the first derivative gives me the angular coefficient and when I equal it to 0 the line is parallel) (considering as y the time and as x HO)
Is that the problem? ( I know the real demonstration but i want to understand why this variant doesn't work)