general confusion trying to remember what I was talking about November 29, 2014 admin Leave a comment e = hf e = hc/λ hc/λ = mgH g = v/t hc/λ = mvH/t m = h/λ v λ = h/mv h = mvλ m = h/λ v v = λ f ke = mgh mc2 = mgh c2 = gh