• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Anyone remember how to prove Babinet's principle through superposition? (diffraction)

Yo, d00dz

I'm kind of stumped on this problem on my homework: "A monochromatic beam of parallel light is incident on a hole of diameter a >> wavelength. Point P lies in the geometrical shadow region on a distant screen. Two obstacles are placed in turn over the hole. A is an opaque circle with a hole in it and B is the "photograhpic negative" of A (a circle with an opaque hole in it) Using superposition concepts, show that the intensity at P is indentical for each of the two diffracting objects A and B (Babinet's principle)"

I'm just clueless as to where to start on this.. I was about to fire up a point-by-point analysis, but this class doesn't really require knowledge of integration, so I don't think that's the right way to go about finding the answer

Can anyone lend a hand?

I'm going to stay up for a while seeing if I can't help anyone else on their homework, and then I'll get up in the morning early, in case any people in other time zones show up
 

Related Threads for: Anyone remember how to prove Babinet's principle through superposition? (diffraction)

Replies
1
Views
929
  • Last Post
Replies
2
Views
2K
Replies
1
Views
668
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
0
Views
4K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
8
Views
5K
  • Last Post
2
Replies
25
Views
2K
Top