Electron diffraction
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Electron diffraction is a generic term for phenomena associated with changes in the direction of electron beams due to elastic interactions with atoms. It occurs due to elastic scattering, when there
Figure 1: Selected area diffraction pattern of a twinned austenite crystal in a piece of steel
Figure 5: Replica built in 1980 by Ernst Ruska of the original electron microscope, in the Deutsches Museum in Munich
Figure 24: Gas electron diffraction pattern of benzene.
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Transmission electron microscopy is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen is most often an ultrathin section less than 10
A transmission electron microscope (1976)
The electron source of the TEM is at the top, where the lensing system (4,7 and 8) focuses the beam on the specimen and then projects it onto the viewing screen (10). The beam control is on the right (13 and 14)
TEM sample support mesh "grid", with ultramicrotomy sections