Electron microscopes

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  • Created by: sisi
  • Created on: 14-03-13 20:17

Light microscopes have a low Resolution. This means that if the magnification is above 1500x the image wont be clear.

we can achieve a higher resolution with electron microscope 

so we have two types of electron microscopes the first is 

Transmission electron microscopes (TEM)

  • The electron beam passes through a very thin sample.
  • Electrons pass through the denser parts of the sample less easily, so giving some contrast.
  • The final image produced is 2D
  • The magnification possible with a TEM is 500,000x

Scanning electron microscope (SEM)

  • The electron

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