effective temperature

effective temperature

effective temperature (symbol Teff or Te) The temperature of a black body that radiates the same total energy per unit area as a given object, such as a star. It is the most useful measure of a star's surface temperature. The effective temperature of the Sun, for example, is 5800 K. However, in other circumstances it may be misleading, such as for a planetary nebula which may have a kinetic temperature (obtained from the mean energies of the particles) of 10 000 K, but an effective temperature of only 50 K because of the low density of particles. See also Colour Temperature.

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"effective temperature." A Dictionary of Astronomy. 1997. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

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"effective temperature." A Dictionary of Astronomy. 1997. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-effectivetemperature.html

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effective temperature

effective temperature (Te) The temperature of a planetary surface in the absence of an atmosphere. The effective temperature of Earth is some 35–40°C lower than the actual Earth surface temperature (Ts): the latter is approximately 15°C owing to the greenhouse effect of the Earth's atmosphere.

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AILSA ALLABY and MICHAEL ALLABY. "effective temperature." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "effective temperature." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O13-effectivetemperature.html

AILSA ALLABY and MICHAEL ALLABY. "effective temperature." A Dictionary of Earth Sciences. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-effectivetemperature.html

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effective temperature

effective temperature The temperature of a planetary surface in the absence of an atmosphere. The effective temperature of Earth is some 35–40°C lower than the actual Earth surface temperature (approximately 15°C) owing to the ‘greenhouse effect’ of the Earth's atmosphere.

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MICHAEL ALLABY. "effective temperature." A Dictionary of Ecology. 2004. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "effective temperature." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O14-effectivetemperature.html

MICHAEL ALLABY. "effective temperature." A Dictionary of Ecology. 2004. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-effectivetemperature.html

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