Ch_7-1_The_nature_of_Light (1)

Ch_7-1_The_nature_of_Light (1) - WAVES Copyright Free...

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Unformatted text preview: WAVES Copyright Free Desktop Wallpapers .Net Beautiful Desktop Wallpapers THE DEVELOPMENT OF QUANTUM MECHANICS (Wave Mechanics) Well begin with a discuss of the nature of waves and in particular of light Reger WATER WAVES Reger (lambda) units: m or m/cycle Speed = v = f f units: s-1 or cycles/s Reger ELECTROMAGNETIC RADIATION ( light waves, radio waves, etc. ) Reger 8 3.00 10 / c x m s = = speed of light in vacuum frequency (Greek letter nu) wavelength c = = = ELECTROMAGNETIC RADIATION PROPERTIES OF WAVES Diffraction: Interference: Soap Bubbles Constructive interference Destructive interference Refraction: PROPERTIES OF WAVES ULTRAVIOLET CATASTROPHE Quantization of energy for radiating oscillatormetal, molecule, or polyatomic ion: PLANCKS THEORY Discrete units of light called photons PHOTOELECTRIC EFFECT Slope = ? h . . o K E hf hf =- Na 2.28 544 Green Al 4.08 304 UV Cu 4.7 264 UV Zn 4.31 288 UV Work function of selected metals Metal hf o (eV) Wavelength (nm) Momentum of photon =...
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Ch_7-1_The_nature_of_Light (1) - WAVES Copyright Free...

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