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Diffraction of light

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in Classical Physics

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http://www.geocities.com/thesciencefiles/singleslit/diffraction.html]

Refer to this web site, please.

The brightness of the colour is proportional to its amplitude?

I can understand why the middle of the screen is the brightest, but in my mind, I think there should be only one area which is bright for a single-slit.

Is that light has many beams and able to create interference for even only a single-slit?

The diffraction of a light beam is really different from that of a water wave, isn't it?

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Oh sorry, I can't find it again.

Do interferences occur when a light passes through a single slit by diffraction?

Only one area is bright ? or Several areas are bright projected on a screen?

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Thank you.The diffraction of a light beam is really different from that of a water wave, isn't it?

Thank you.The diffraction of a light beam is really different from that of a water wave, isn't it?

 

They both diffract and interfere. Here and here are ripple-tank experiments that show the interference effects in water.

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