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In 1284 Salvino Armati invented the wearable eye glass

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Hans and Zacharias Janssen, create the first microscope in 1590

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in 1625 the word microscope started to be used in science

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Robert Hooke in 1665 saw and named the cell

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In 1665, Robert Hooke published the "Micrographia" where he wrote down all of his observations using a microscope.

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Ernst Ruska, a German electrical engineer invented the electron microscope. The earliest electron microscope was developed in 1931

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Nikon is one of the biggest companies for manufacturing microscopes

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On January 12, 2008, Lawrence Berkeley National Labs just turned on a $27 million electron microscope. Its ability to make images to a resolution of half the width of a hydrogen atom makes it the most powerful microscope in the world.