Light less diffract

  • Thread starter Hepic
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  • #1
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1)I know that light with more wavelength run faster in the glass from an other with less.But why? If you tell me because has less diffract I will ask again,why it has less?
 

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  • #2
Bandersnatch
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Watch these public outreach lectures on QED by Feynman.

http://vega.org.uk/video/subseries/8

The second one, I think, contains a section on diffraction, specifically. He also talks at length about the question of "what does it mean".
 

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