Ummm, what do these equations do

  • #1
physics noob
41
0
hey, I am look over some equations given to me by my instructor, and I am reading the book and i cannot find what they do


k= 2(pi) / wavelength......what is k


and theta_p = tan^-1 (n2/n1) what is theta_p

and dx/L = m(wavelength) what is d and x what does this find...



thanks in advanced,,,,, great website
 
Last edited:

Answers and Replies

  • #3
eep
227
0
'k' is called the wave number i think. if you freeze a wave in time, k is equal to how much the phase changes per meter. you can tell by the units. 2pi is in radians and wavelength is in meters so k = radians/meter
 
  • #4
Pengwuino
Gold Member
5,124
17
First one is the wave number.
 

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