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Ummm, what do these equations do

hey, im look over some equations given to me by my instructor, and im 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:

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
 

Pengwuino

Gold Member
4,854
14
First one is the wave number.
 

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