07 March 2013

Fun with diffraction gratings

From the Exploratorium:
These were created by blocking the light on two glass doors with big paper, cutting out holes, and then placing diffraction grating over the holes.
We have prisms in our windows.  Now I want to find some diffraction grating.


  1. I found some on the site onlinesciencemall.com

  2. You probably already have a lot of them already, with mirrors printed on their backs. Diffraction is why the underside of a CD or DVD makes rainbows.


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