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A new class of planet, completely enveloped by water.

文章發表於 : 2012-02-22, 20:07
willis
Just learn this from i-Cable's news & find these relevant links. The pressure is so high that hot ice is formed.
http://news.discovery.com/space/waterwo ... 20221.html
http://www.redorbit.com/news/space/1112 ... ld-planet/

Re: A new class of planet, completely enveloped by water.

文章發表於 : 2012-02-22, 23:21
社長
剛看到同一則新聞,熱冰的確是一個很好的中學物理課題:

http://inews.mingpao.com/htm/inews/2012 ... 31411a.htm

Re: A new class of planet, completely enveloped by water.

文章發表於 : 2012-02-23, 09:25
willis
社長 寫:剛看到同一則新聞,熱冰的確是一個很好的中學物理課題:

http://inews.mingpao.com/htm/inews/2012 ... 31411a.htm


熱冰並不是簡單的問題(non-trial),從物理知識,壓強越大,沸點越大,但熔點越細。但該行星的壓強非常之高,更加無可能形成高溫的熱冰。這是與一般的物理知識有矛盾的。看看這條i-cable昨晚的新聞解釋是錯誤的。

http://cablenews.i-cable.com/webapps/pr ... id=1010260

而英文原文只是指出高溫高壓就形成了熱冰,但沒有解釋。但大家知不知道合理的解釋是甚麼?
http://news.discovery.com/space/waterwo ... 20221.html

Re: A new class of planet, completely enveloped by water.

文章發表於 : 2012-02-23, 12:38
社長
沒有深究物理,也有更多東西忘了,熔點跟壓力的反比,是否線性,或完全抵消壓力本身的作用? 否則到了某個臨界線還是會成為固態?