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- Place specimen in vacuum chamber in the middle of the machine
- The electron gun which produces the beam uses electromagnetic coils and high voltage=electrons go at fast speeds
- Most powerful electron microscope
- used to see things 1nm in size
- Electrons go through the specimen which pass through to create an image on a screen
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- Designed to make images of the surfaces of tiny objects
- The electromagnetic coils pull the beam back and forth scanning the specimens surface slowly and systematically
- Bounce off the specimen rather than travelling through
- Electrons are reflected and directed at a screen
- see things 10nm in size
- Produce 3-D images of sharp quality
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