Why does a plane glass not separte light? (but a prism does)

  • #1
Hey guys, I think I know the answer but I wanted to confirm...

Is it that a plane glass also separates light (internally) but we cant see it because all the rays get refracted back to its original angle when it comes out

On the other hand, because the shape of a prism, light that exits a prism has been refracted from its original angle, thus we can see the different colors of different frequency

Here is a link that shows light rays going through plane vs prism
http://academic.greensboroday.org/~regesterj/potl/Waves/Refraction/RefractionA.htm


I just wanted to know whether this is the correct reason for why a PRISM is always used to show the separation of light

(not for any coursework, just wondering)

Thanks
 

Answers and Replies

  • #3
cool thanks

:)
 
  • #4
610
5
A lens also separates white light, but it is http://en.wikipedia.org/wiki/Chromatic_aberration" [Broken].

If you look closely at ray diagrams, you see that a plane of glass does shift the image slightly.
 
Last edited by a moderator:

Related Threads on Why does a plane glass not separte light? (but a prism does)

Replies
5
Views
16K
Replies
6
Views
10K
  • Last Post
Replies
1
Views
3K
  • Last Post
2
Replies
25
Views
4K
Replies
12
Views
29K
  • Last Post
Replies
8
Views
13K
  • Last Post
Replies
8
Views
9K
  • Last Post
2
Replies
42
Views
7K
Top