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chapter_33 - Chapter 33. Electromagnetic Waves 33.1. What...

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Unformatted text preview: Chapter 33. Electromagnetic Waves 33.1. What is Physics? 33.2. Maxwell's Rainbow 33.3. The Traveling Electromagnetic Wave, Qualitatively 33.4. The Traveling Electromagnetic Wave, Quantitatively 33.5. Energy Transport and the Poynting Vector 33.7. Polarization 33.8. Reflection and Refraction 33.9. Total Internal Reflection 33.10. Polarization by Reflection What is Physics? Maxwell's Rainbow Sensitivity of the average human eye Electromagnetic Waves • It consists of mutually perpendicular and oscillating electric and magnetic fields. The fields always vary sinusoidally. Moreover, the fields vary with the same frequency and in phase (in step) with each other. • The wave is a transverse wave , both electric and magnetic fields are oscillating perpendicular to the direction in which the wave travels. The cross product always gives the direction in which the wave travels. • Electromagnetic waves can travel through a vacuum or a material substance. • All electromagnetic waves move through a vacuum at the same speed, and the symbol c is used to denote its value. This speed is called the speed of light in a vacuum and is: • The magnitudes of the fields at every instant and at any point are related by E B B r r...
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This document was uploaded on 12/09/2009.

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chapter_33 - Chapter 33. Electromagnetic Waves 33.1. What...

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