“effective temperature”的概念、定义、翻译、参考文献-科学参考

effective temperature

Physics

See luminosity.

Astronomy

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.

Geology and Earth Sciences

1. 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 (T_s): the latter is approximately 15 °C owing to the greenhouse effect of the Earth’s atmosphere.
2. The temperature of saturated air that, with a wind speed no greater than 0.2 m/s, would produce the same sensation of comfort in a sedentary person wearing indoor clothes as the air to which that person is actually exposed.

单词	effective temperature
释义	effective temperature Physics See luminosity. Astronomy 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. Geology and Earth Sciences 1. 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 (T_s): the latter is approximately 15 °C owing to the greenhouse effect of the Earth’s atmosphere. 2. The temperature of saturated air that, with a wind speed no greater than 0.2 m/s, would produce the same sensation of comfort in a sedentary person wearing indoor clothes as the air to which that person is actually exposed.
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