Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: iklerini on 01/12/2021 14:13:59

Title: I have a question about diffraction gratings.
Post by: iklerini on 01/12/2021 14:13:59

I am given that the grating has 500 lines per mm and it is illuminated with a light of wavelength 510nm. The question is asking for haw many diffraction orders are seen and what the angle is of each. The only equations I know have both the angle and number of orders in the problem so I cant figure it out with having 2 variables in the problem.

Title: Re: I have a question about diffraction gratings.
Post by: Colin2B on 01/12/2021 15:24:13

Firstly, remember that the integer for the individual orders is one you supply.
Secondly, the orders are projected onto a screen so there cannot be any with an angle >90°
The rest is playing around with the formula. Enjoy