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Published byDestiny Evans Modified over 11 years ago
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Micro meter = millionth of a meter Micro meter = m Visible light 0.4 m to 0.7 m
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Radiation Laws As temperature increases wavelength of maximum radiant intensity, max, increases. Weins Displacemnet Law. Sun Earth T=6000 K T=300 K
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Radiation Laws As temperature increases wavelength of maximum radiant intensity, max, increases. Weins Displacemnet Law. Sun Earth
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Radiation Laws As temperature increases total radiation output increases. Stefan_Boltzman Radiation Law. Brightness = Intensity Energy leaving an object each sec per square meter As T double Brightness increases by ___??____ As T triples Brightness increases by _______
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Radiation Laws As temperature increases total radiation output increases. Stefan_Boltzman Radiation Law. Brightness = Intensity Energy leaving an object each sec per square meter As T double Brightness increases by 16 As T triples Brightness increases by _____
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Black Body =1.0
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The hole acts like a blackbody. All radiant energy is absorbed none is reflected. If the inside of the cavity were to become hot then the hole would glow.
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Image modified from: http://www.usatoday.com/weather/tg/wghwrmng/wghwrmng.htm Surface gets energy only from the sun when there is no atmosphere No Atmosphere Solar In IR out
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Surface gets solar energy from the sun and infrared energy from the atmosphere when there is an atmosphere. Image modified from: http://www.usatoday.com/weather/tg/wghwrmng/wghwrmng.htm With an Atmosphere
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