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The art of lense grinding was discoveredDutch lense grinders made the first microscopeA scientist studied various objects with the microscope and dicovered how certain things work.Anton van Leeuwenhoek made a micoscope with only one lense and dicovered how blood cells workThe microscope quickly spread and became more and more popular among scientists.One scientist dicovered that placing different lenses together can stop the blurring image when looking through it.Richard Zsigmondy makes a more powerful microscope called the ultramicroscope.Frits Zernike invented the phase-contrast microscope
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