Chap26_Light - Chapter 26 Properties of Light Nature of...

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Chapter 26 Properties of Light
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Nature of Light Light is an electromagnetic wave . It is a transverse wave, propagating at the speed of light: in vacuum v(light) = c = 300,000 km/s in other (transparent media): v(light) = c / n, where n is the “refraction index”.
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Speed, Wavelength, and Frequency of Light Since Wavelength = then a radio station emitting at 100 Megahertz is sending a wave of Wavelength = = 3 meters Wave Speed Frequency 300,000,000 m/s 100,000,000 Hz
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Light/Electromagnetic Spectrum Cell phone
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Check Which requires a physical medium in which to travel: light, sound, or both? A laser of He-Ne emits light of wavelength 633 nanometers. An Argon laser emits at wavelength 515 nm. Which one emits light of higher frequency?
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A material is transparent or opaque to different wavelengths depending on its atomic properties. Some opaque materials absorb certain waves while other materials reflect those electro- magnetic waves. For visible light, glass is
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This note was uploaded on 04/29/2010 for the course PHYS 100 taught by Professor Nidhalguessoum during the Spring '10 term at American University of Sharjah.

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Chap26_Light - Chapter 26 Properties of Light Nature of...

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