Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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compound microscope a microscope in which two lenses of differing focal lengths are mounted in an adjustable tube.
electron microscope any of various microscopes that use electrons rather than rays of light to magnify the image of the object being viewed.
phase-contrast microscope a microscope that uses the different phases of light from different parts of an observed object to produce an image with high contrast among its parts.