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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Zernicke,_Frits
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1992-09-01
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11 lines
1888-1966. Dutch physicist who developed the
phase-contrast microscope 1935. Earlier
microscopes allowed many specimens to be
examined only after they had been transformed
by heavy staining and other treatment. The
phase-contrast microscope allowed living
cells to be directly observed by making use
of the difference in refractive indices
between specimens and medium. Nobel Prize for
Physics 1953.