Microscopy: TEM and SEM

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  • Created by: Joanne
  • Created on: 22-09-12 16:59

Electron microscopes

  • the wavelength of an electron beam is about 1nm so objects half the size are visible - in the EM, magnets focus beams of electrons and an image is formed when the electrons strike a fluorescent screen or photographic film
  • inside the EM is a vacuum which allows electrons to travel towards the


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