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examination of minute objects by use of an electron microscope.
e·lec·tron mi·cros·co·py (ē-lektron mī-kroskŏ-pē)
Examination of minute objects by use of an electron microscope.
electron microscopy A method of producing a greatly enlarged image of very small objects by using a beam of accelerated electrons instead of light. Modern instruments enable objects smaller than 1nm (one millionth of a millimetre) to be seen. This is almost down to atomic level. Focusing is done by means of magnetic fields obtained from charged plates or current-carrying coils. These fields act as lenses. Electron microscopes are essential tools in medical research and diagnosis.