Effective temperature | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-07

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Effective_temperature


00:00:34 1 Star
00:00:53 2 Planet
00:02:57 2.1 Blackbody temperature
00:03:05 2.2 Surface temperature of a planet
00:06:14 2.3 Earth Effective Temperature
00:09:50 3 See also
00:10:40 4 References



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SUMMARY
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The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.  Effective temperature is often used as an estimate of a body's surface temperature when the body's emissivity curve (as a function of wavelength) is not known.
When the star's or planet's net emissivity in the relevant wavelength band is less than unity (less than that of a black body), the actual temperature of the body will be higher than the effective temperature.  The net emissivity may be low due to surface or atmospheric properties, including greenhouse effect.