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retupmoc
Apr22-04, 01:49 PM
Can anyone explain the following to me;

what is phase difference and coherence?

what actually is diffraction and why does it happen (is it something to do with Huygens principle?)

why do you observe circular fringes when using the Michelson interferometer

your help is much appreciated, thanks

retupmoc
Apr23-04, 04:51 AM
Can anyone help with just one of these then?