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-optical microscope
-by lens makers Zaccharias and Hans Janssen -
-refers to the idea that cells are the basic unit and structure of all living things
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-First to see cells
-he used the microscope to look at a slice of cork -
-improved the microscope
-oberved living cells for the first time -
-discovered the nucleus in the cell and cytoplasmic streaming(plant cells)
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-figured out that all plants are made of cells. -reconized the importance of the cell nucleus (1831) -
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-stated that animals are also composed of cells -main contributors to the cell theory
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-oncluded that cells come from pre-existing cells
-he was the first to recognize leukemia cells -
-type of microscope that uses a beam of electrons to magnify
-magnifys up to about 10,000,000x
-uses electrostatic and electromagnetic lenses -
-inventors Gerd Binnig and Heinrich Rohrer
-imaging surfaces at the atomic level -gives three-dimensional images of objects
