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Electromagnetic Spectrum

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Presentation on theme: "Electromagnetic Spectrum"— Presentation transcript:

1 Electromagnetic Spectrum
AM Shortwave TV FM Radar & microwaves Infrared Rays Ultraviolet Rays X-rays Gamma Rays 104 m 102 m 1 m 10-2 m 10-4 m 10-6 m 10-8 m 10-10 m 10-12 m 10-14 m Increasing Wavelength Increasing Frequency Visible Spectrum ROY G BIV

2 E = h   h = Planck’s Constant h = 6.626  10-34 Js Light and Energy
The energy of light depends on its frequency/wavelength: Max Plank h = Planck’s Constant h =  Js (Know this number!)

3 Electromagnetic Spectrum
AM Shortwave TV FM Radar & microwaves Infrared Rays Ultraviolet Rays X-rays Gamma Rays 104 m 102 m 1 m 10-2 m 10-4 m 10-6 m 10-8 m 10-10 m 10-12 m 10-14 m Increasing Wavelength Increasing Frequency Increasing Energy E = h Visible Spectrum ROY G BIV

4 Energy Comparison EFM < Egreen light Visible green light:
 = 6.0  1014 Hz E = h E =  Js  (6.0  /s) E = 4.0  J EFM < Egreen light FM Radio:  = 94.5  106 Hz E = h E =  Js  (94.5  106 1/s) E = 6.63  J


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