Double-slit interference

  • Thread starter lha08
  • Start date
  • #1
164
0

Homework Statement


I was just wondering in double-slit interference, when it's a bright fringe, let's say m=2, does that mean that one wave coming from one of the slits is travelling 2 wavelengths longer than than the other wavelength coming from the other slit? How does that work?
Thanks


Homework Equations





The Attempt at a Solution


Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
Redbelly98
Staff Emeritus
Science Advisor
Homework Helper
Insights Author
12,121
159

Homework Statement


I was just wondering in double-slit interference, when it's a bright fringe, let's say m=2, does that mean that one wave coming from one of the slits is travelling 2 wavelengths longer than than the other wavelength coming from the other slit?
Yes, that's exactly what it means.

How does that work?
Thanks
It works because the waves coming out of the slit travel at some angle, so that one of the paths is longer. See the figure here:
http://commons.wikimedia.org/wiki/File:Double_Slit_Experiment.png

Hope that helps?
 

Related Threads on Double-slit interference

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
5
Views
880
  • Last Post
Replies
2
Views
842
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
0
Views
2K
  • Last Post
Replies
1
Views
7K
  • Last Post
Replies
3
Views
5K
Top