What is the space between two consecutive grooves on the CD

1. Oct 1, 2007

thuanthuan

Can you tell me how to perform this experiment ? .. and also prove that it's true.
I don't understand it.
Thank you.

Last edited: Oct 1, 2007
2. Oct 1, 2007

thuanthuan

note that equation 3.10: for diffraction grating, the condition for maxima in the interference pattern at the angle a is d.sina=m.lambda
(d = slit spacing. m=0,1,2... - order number, lambda=wavelength)