来自《耶鲁大学开放课程：新生有机化学 第5集 第5集》

• 
  
  Everybody see that?
  看到了吗
• 
  
  And halfway in between those dashed yellow lines,
  而在这些黄色短线之间
• 
  
  there's no change at all; nothing's happening there.
  却没有波 什么都没有
• 
  
  And if you go out very, very far away,
  从很远的地方看
• 
  
  you can see that asymptotically these approach
  将这些位置用线连起来
• 
  
  these straight lines that originate between the electrons,
  会发现连线会在在两电子中间汇合
• 
  
  or on the crystal in a real case.
  实际情况中 就是晶体的位置
• 
  
  So what you have coming out of the crystal are straight rays of light, x-ray light.
  而从晶体位置发出的这些连线就是X光
• 
  
  And the angles at which they come out
  这些X光的发射方向
• 
  
  depend on where the electrons are.
  取决于电子的位置
• 
  
  If the electrons are closer together or further apart
  两个电子间的距离增加或减少
• 
  
  or displaced in this direction,
  或者被移走