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First vision aid- a reading stone- it was a glass sphere that magnified words.
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Creates first eye glasses
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Multiple lenses in a tube making first type of telescope/microscope
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Used a microscope lens to view the pores/cells of a piece of cork
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Built a simple microscope and saw bacteria. Refined the process of polishing lenses
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Improved microscopy and microscopes and microscopes became popular with scientists.
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Invented the electron microscope. This is a much more powerful more type of microscope.
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