Spinning probabilities

  • Thread starter zincshow
  • Start date
104
0

Main Question or Discussion Point

In the Richard Feynman book QCD, he talks of the chance of reflection of a light photon off water varies from 0% to 8% (depending on the width of the layer). He says that the probability changes 36000 times per inch for red light without showing how it is done (ie. how he got the 36000 rotations per inch for red light) (page 27)

I may have missed something simple, but how do I calculate this? (ie, how many times does blue light rotate after travelling an inch)?

Thanks
 

Answers and Replies

alxm
Science Advisor
1,841
7
Simply the number of wavelengths per inch.
1 inch ~= 0.0254 m, and red light is ~700 nm so 0.0254/700E-9 ~= 36000.
 

Related Threads for: Spinning probabilities

  • Last Post
Replies
1
Views
2K
Replies
3
Views
291
Replies
2
Views
531
  • Last Post
Replies
0
Views
182
  • Last Post
2
Replies
25
Views
3K
  • Last Post
Replies
9
Views
4K
  • Last Post
Replies
2
Views
791
  • Last Post
3
Replies
55
Views
8K
Top