even more physics

F= -kx     (F, k = spring constant, x = distance)

PEs = 1/2 kx2    

T = 1/f

V = fλ

n = c/V

n1*sinθ1 = n2*sinθ2

sinθc = n2/n1

n1V1 = n2V2


* spring constant isn't actually constant… like light constant