Electron Microscopes uses a beam of highly energetic electrons to examine objects on a very fine scale.  It uses a particle beam of electrons to illuminate the specimen and produce a magnified image. They have a greater resolving power than a light-powered optical microscope, because electrons have wavelengths about 100,000 times shorter than visible light (photons), and can achieve better than 0.2 nm resolution and magnifications of up to 2,000,000x.

The electron microscope uses electrostatic and electromagnetic "lenses" to control the electron beam and focus it to form an image.

An electron beam is diffracted by the specimen and the image recorded using a digital camera. Electron microscopes are used to observe biological and inorganic specimens including microorganisms, cells, large molecules and crystals.

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