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This was when the microscope was invented by Hans and Zacharias Jansen.Due to poor lens quality,the microscope used only two lenses that could only magnify an object up to 20 to 30 times its normal size. Hence it was hard to observe much tinier details of a cell.

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Microscope generally grew lighter in weight which made them more convenient to use and there were achromatic lenses for viewers to see the colours of the cells. There were also new ways to illuminate specimens and control light, and the bases of compound microscopes became more stable

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1931,the election of microscope was invented. An electron microscope
Depends on electrons rather than light to view an object.Electron microscope make it possible to view objects as small as the diameter of an atom

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Microscope today are so advance that they can magnify a sample as many as 1000 time!!!!
The microscope can also let viewers see a high resolution of cells with many detail and as well as distinctive colours.there are also many other types of advanced microscope that can well accommodate to the needs for scientist to do essential research more accurately

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Robert Grosseteste writes on optics,and the production of lenses,while asserting models should be developed from observations,and perdictions of those models verified through obervation in a precursor to the scientific method