PHY214 Ch 35

PHY214 Ch 35 - PHY214- Chapter 35 Interference 35-1...

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Unformatted text preview: PHY214- Chapter 35 Interference 35-1 Interference 35-2 Light as a Wave 35-3 Diffraction 35-4 Youngs Interference Experiment 35-5 Coherence 35-6 Intensity in Double-Slit Interference 35-7 Interference from Thin Films 35-8 Michelsons Interferometer PHY214- 35-2 Light as a Wave Huygens principle Every point on a wavefront acts as a point source of secondary wavelets. The law of refraction (Snells law) 1 1 2 2 v v = 1 1 sin hc = 2 2 sin hc = 1 1 1 2 2 2 sin sin v v = = Index of refraction: c n v = 1 2 1 2 and c c n n v v = = 1 1 2 2 2 1 sin sin c n n c n n = = 1 1 2 2 sin sin n n = PHY214- 35-2 Light as a Wave n v c = n n = n n v f = n c n c f f n = = = Wavelength depends on the light speed and the index of refraction. 1 v c n = and v f = Frequency does not change in different media....
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PHY214 Ch 35 - PHY214- Chapter 35 Interference 35-1...

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