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宅男恋爱公式:你有多少潜在女友

来源:上海易达教育中心动态   时间: 2011-08-11

  The Drake equation is used to estimate the number of highly evolved civilizations that might exist in our galaxy. The equation was developped in 1961 by Dr.Frank Drake at the National Radio Astronomy Observatory.
  德雷克方程式是用来估计银河系内拥有高度发展文明的星球数量的。1961年,美国国家无线电天文台的弗兰克·德雷克博士创造出了这个方程式。  

  The equation is generally specified as:
  这个方程式写作:
  N=R*×Ep×Ne×F1×Fi×Fc×L
  
  N = the number of civilizations in our galaxy with which communication might be possible;
  我们能够与之沟通的、有高度文明的外星球数量

  R* = the average rate of star formation per year in our galaxy
  银河系中每年新星球"出生率"

  Ep = the fraction of those stars that have planets
  能生长植物的星球所占的比率

  Ne = the average number of planets that can potentially support life per star that has planets
  每颗这样的星球上能维持生命的植物的平均数目

  F1 = the fraction of the above that actually go on to develop life at some point
  其中真正能出现生命痕迹的星球比率

  Fi = the fraction of the above that actually go on to develop intelligent life
  其中能出现高等生命的星球比率

  Fc = the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
  拥有向宇宙中发射可识别信号的能力的文明在以上星球中所占的比率

  L = the length of time such civilizations release detectable signals into space.
  那样的高等文明生物发射可识别心信号的时间

  Where extraterrestrial civilizations may be rare, there is something that is seemingly rarer still: A girlfriend. What might the approach employed in the estimation of the number of alien civilizations tell us about the number of potential girlfriends for me? A somewhat less scientific question, I admit, but one of substantial importance.
  虽说外星生命及其稀少,但还是有一种生命比它更稀少:女朋友。这个能估量外星文明的公式该怎么用来估量我的潜在女友呢?我承认这是件不怎么科学的测试,但对我来说有着相当大的重要性。

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