Electron microscope

An electron microscope uses a focused electron beam, rather than the conventional light beam, to create a magnified image. While a conventional light microscope can magnify 1,000 times, an electron microscope can magnify 10,000 times.

There are two types of electron microscopes:

  • A transmission electron microscope directs the beam onto the object being examined.
  • A scanning electron microscope moves a beam across the object.

Electron microscopy can be used to examine cells, virus particles, and atomic structure and arrangement.

Last Updated: January 26, 2009

Author: Bets Davis, MFA

Medical Review: Michael J. Sexton, MD - Pediatrics & W. David Colby IV, MSc, MD, FRCPC - Infectious Disease

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