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developed in italy, used to make spectacles to improve eyesight.
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make the first microscope by placing two lenses in a tube.
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described his observations of various objects with his microscope and publishes his results in Micrographia. He used the word "cell" to describing biological organisms.
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Known as the father of microbiology. He designed a single-lens microscope and used it to be the first to work with microbes.
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found that several weak lenses could be used together at certain distances to give good magnification without the image being blurry.
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discovered the resolution limit of a microscope.
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invents the phase-contrast microscope.
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develops the electron microscope.
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invented the scanning tunneling microscope.