行星溫度同和太陽的距離

2010-02-26 6:51 am
點解距離愈大溫度愈低???
明明太空係真空, 同埋熱係經radiation傳播, d energy有咩途徑 lose?

回答 (4)

2010-03-01 4:20 am
1. 行星距離太陽愈遠, 所接收到的 energy 愈少.
2. 只要行星不是絕對零度, 便會 radiate energy, 溫度愈高, radiate 得愈快, 在較低的溫度便會達到平衡 (接收到的 energy 等於 radiate 走的 energy 的溫度)
2010-02-28 4:29 pm
radiation傳播, 係全四方八面 , 當愈遠 , 所到達的紅外幅射愈低
2010-02-27 4:09 am
因为距離加大,範圍也加大,咁樣個平均溫度就會越低。
2010-02-26 5:01 pm
Don't forget that the propagation of radiation follows the inverse square law. The farther away from the sun, the lower is the intensity of radiation.

Apart from this, whether there is a gaseous atmosphere on the planet to trap the incident radiation also plays an important factor.


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