IRAS stayed aloft for over a year gathering infrared data. The signals in the galactic plane were expected, but the signals in the ecliptic plane were surprising because a peak
of emissions at about 20 microns was observed from dust, etc. in the ecliptic plane. Treating it as blackbody radiation and using the Wien displacement law, an
effective temperature of about
145 K was obtained for this solar
system debris.
IRAS 在空中工作超过一年，收集红外数据。银河平面的信号是预期的，但黄道平面的信号却令人惊讶，因为在黄道平面中从尘埃等观测到约20微米的发射峰。将这一现象视为黑体辐射，并利用维恩位移定律，得出该太阳系尘埃的有效温度约为145 K。 |  |
Blackbody radiation concepts
索引 黑体辐射概念
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