来自《耶鲁大学开放课程：新生有机化学 第4集 第4集》

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  But at any rate, you can do it.
  不过言归正传 这实验是你也能做的
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  And you can measure the rate at which different ledges dissolve.
  而且你还能测量每条缘融化的快慢
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  Some dissolve much faster than others.
  其中一些比其他一些快得多
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  Here's scanning tunneling microscopy.
  这是一张隧道扫描显微照片
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  This is done in a different way.
  是用另一种方式拍摄的
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  It's not -- you don't reflect the laser light.
  你并不是 无需反射激光光束
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  What you do is detect the electrical conductivity through a layer.
  你要做的是检测一层物质的电导率
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  And if you have an atom
  如果你发现了一个原子
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  there that is a good conductor of electricity,
  是个导电原子的话
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  you get more current through and less and so on.
  你就会得到更大的电流 反之亦然
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  So as you scan a real -- now this could be a really,
  那么当你扫过 比如说
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  really sharp tip where the
  一个很尖锐的突起时