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To begin a discussion, of sixteenth-century discoveries. To put the X-ray microscope in a historical perspective. To show how limited its uses are. To explain how it functioned.
The detail seen through a microscope. Sources of illumination for microscopes. A new kind of microscope. Outdated microscopic techniques.
see viruses directly develop the electron microscope later on understand more about the distribution of the chemical elements discover single-celled plants anal animals they had never seen before
Transmission(透射) electron microscope Scanning electron microscope Differential centrifugatioin(差速离心) X-ray crystallography
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