2006-10-25 01:43:58 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
When a beam of light travels into any kind of material from air (let's say from vacuum to be entirely correct) it bends toward the normal, since it is not possible to have a refreactive index less than 1.
Just as an addition, the refractive index of perspex is 1.492, according to wikipedia, which insists that perspex is actually polymethyl methacrylate.
2006-10-25 01:49:40 · answer #1 · answered by Grelann 2 · 0⤊ 0⤋
It bends in the direction of the traditional considering that's getting right into a medium which has a a strategies better optical density and, hence, slows down. Make a diagram with me: think of a beam of sunshine coming from the better left nook - at an attitude - so it runs into the horizontal floor of a block of plastic. whilst it hits, the decrease area of the wave strikes first... the decrease area of the wave is bogged down first and the wave is bent in the direction of the traditional.
2016-11-25 19:51:35 · answer #2 · answered by doolaghty 4 · 0⤊ 0⤋
Both! reflective qualities of light depends on the angle of attack! Take a mirror! head on! it will reflect 99% back towards you! the 1% is dissipation. But perspex dissipates much more light in diffraction because of it's reflective qualities.
2006-10-25 02:08:49 · answer #3 · answered by wheeliebin 6 · 0⤊ 0⤋
Towards the normal
2006-10-25 01:47:21 · answer #4 · answered by JJ 7 · 0⤊ 0⤋