Posted by **anonymous** on Friday, April 27, 2007 at 4:22am.

Why is white light separated into a spectrum of colors when it is passed through a diffraction grating?

The diffraction angle (theta) is given by

n x (lambda) = d sine(theta)

where

lambda = wavelength

theta = diffraction angle

d = grating spacing

n = order (1,2,3 etc.)

so each wavelength is diffracted through a slightly different angle. If the incident light is white light then you will see a rainbow at each value of n.

## Answer this Question

## Related Questions

- Physics - When light of a certain wavelength is incident normally on a certain ...
- physics - The width of the doorway is 83 cm, and the speed of sound is 343 m/s. ...
- physics - What happens to the diffraction pattern when you have a small ...
- physics - A diffraction grating gives a second-order maximum at as angle of 31...
- physics - A diffraction grating gives a second-order maximum at as angle of 31...
- physics - Can anyone explain this to me? Is it correct to say that the ...
- physics - Can anyone explain this to me? Is it correct to say that the ...
- Physics. Please help - A 3.00 kHz tone is being produced by a speaker with a ...
- PHYSICS - 1) A diffraction grating with 2.500 x 10^3 lines/cm is used to examine...
- physics - Monochromatic light from a helium-neon laser (wavelength=632.8 nm) ...

More Related Questions