Diffraction Gratings

Plane transmission gratings and the pattern these produce.

 

1. Diffraction Gratings

If you shine light, or other types of EM radiation, through a series of small slits the waves interfere causing constructive interference at certain points. We can then use this method to calculate the wavelength of the light. It is also why DVDs and CDs make beautiful rainbows.

How to Derive:

(Worksheets and solutions)