Monday
March 30, 2015

Homework Help: physics

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

First Name:
School Subject:
Answer:

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) ...

Members