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A comment on In the 1950s, one could buy a miniature electron microscope..

Re:In the 1950s, one could buy a miniature electron microscope. by davi on Sunday July 12, 2009 @11:47AM (#700244)
Looks like a system based on electrostatic lenses rather than the electromagnetic lenses commonly used in TEM today.

Background: http://books.google.com/books?id=y0FF19lud5YC&pg=PA162&#...

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