3 when ray 4 strikes the top interface from

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3 When ray 4 strikes the top interface from underneath, some is reflected (not shown) and some is refracted, ray 5 . It is the interference between rays 2 and 5 that produces a thin filmZs color when the film is viewed from above Polarization Polarization is a property of transverse waves!
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4 Electromagnetic Waves are Transverse Waves[ [ Solving Problems[ ;uestion: 1. When does light will not pass through a pair of Polaroids? Answer: When the axis are perpendicular! Polarization by 8eflection [Solving problems[ ;uestion: To reduce the glare of light from a polished floor, should the axis of a Polarorid filter be horizontal or vertical[? Answer: The axis should be vertical, to block the glare that is horizontal!
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5 Wave-Particle Duality Q: What is the nature of light? Answer: Light is electromagnetic wave! New experimental data[[[ Photoelectric Effect: When light shines on certain metallic surfaces, electrons are eNected from the surfaces are eNected from the surfaces. What is surprising about this effect ? \ot all light frequencies are able to eNect electrons! ]t was found experimentally that electrons are eNected by high frequency light, not by bright light (which may carry a portion of very high energy !).
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  • Fall '08
  • Khankasayev
  • Light, Transverse waves, Thin Films

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