Multiple choice

Which of the following statements are FALSE regarding Transmission Electron Microscopy (TEM)?

  1. First Transmission Electron microscope was built by Knoll and Ruska.
  2. The electronic beam is focused by electromagnetic lenses.
  3. TEM is capable of imaging at a significantly higher resolution than light microscopes.

  1. Only 1

  2. Only 2

  3. Only 3

  4. 2 and 3

  5. None
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All are true statements. First TEM was built by Max Knoll and Ernst Ruska in 1931. TEMs are capable of imaging at a significantly higher resolution than light microscopes, owing to the small de Broglie wavelength of electrons. In TEM electrons are accelerated by an electric potential and focused by electrostatic and electromagnetic lenses onto the sample.

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