Chapter1_16 - 10-15 1 fm 10-12 1 pm 10-9 1 nm 10-6 1 m 10-3...

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PHY3063 R. D. Field Department of Physics Chapter1_16.doc University of Florida Electromagnetic Plane Waves The plane harmonic wave solution for light with frequency f and wavelength λ and speed c = f λ is given by r r Ext E k x ty Bxt B k x tz (,) s i n ( ) $ (,) s i n ( ) =− =− 0 0 ω ω where k = 2 π / λ , ω = 2 π f , T = 1/f , and E 0 = cB 0 . Properties of the Electromagnetic Plane Wave: Wave travels at speed c 3×10 8 m/s in a vacuum. E and B are perpendicular ( r r E B = 0 ). The wave travels in the direction of r r E B ×
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Unformatted text preview: 10-15 1 fm 10-12 1 pm 10-9 1 nm 10-6 1 m 10-3 1 mm 1 1 m 10 3 1 km 10 6 10 9 Wavelength (in meters) 10 3 1 kHz Infrared Long radio waves Microwaves TV AM FM X-rays Ultraviolet Gamma rays Frequency (in Hertz) Visible 1 1 Hz 10 6 1 MHz 10 9 10 12 10 15 10 18 10 21 10 24 x-axis y-axis z-axis E B Direction of Propagation Relative Sensitivity of the Human Eye 0% 20% 40% 60% 80% 100% 400 450 500 550 600 650 700 Wavelength (in nm) Blue Violet Green Yellow Orange Red Visible spectrum 400nm 700nm...
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