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Roger Bacon, a monk who wrote on nature, refernces the use and concept of lenes
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The first microscope was created circa 1600 by Hans and Zacharias Jansen. The microscope was crude and had only 20x magnification
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Nehemiah Grew established studies of plant cells and made a discovery of the celluear structure in plants.
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Hooke shows 35 images that were drawn using the aid of the microscope. First to use phase "cell" when working with cork.
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Leeuwenhoek discovers bacteria, free-living and parasitic protist sperm cells, blood cells, and more.
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Franz Bauer makes the discovery of the plant nucleus.
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Achromatic lenses gave resolution of 1 micron (1/1000 mm)
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Joseph Jackson Lister uses several weak lenses to counter spherical abberation, or the chromatic effect. The lenses gave good images at a certain distance.
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Barthelemy Dumortier discovers binary fission, or cell division, in plants.
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Theodor Schwann and Matthias Schleiden propse the idea of cell theory.
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Rudolf Virchow proposes that all living cells must come from pre-existing cells. Proposal based off of Schwann's and Schleiden's Theory
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Scientists rediscover the 1866 paper by Gregor Mendel heritable elements in peas.
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Ernst Abbe's formula, called the Abbe Sine Condition, provided calculations that allowed for the maximum resolution in microscopes possible.
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Walther Flemming discovers mitosis
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Louis Pastuer becomes interesed in microscopy and tries to disprove theory of spontaneous generation
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Richard Zsigmondy created the ultramicoscope and thus could view objects under the wavelength of visible light.
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Carl Zeiss invents UV microscope and increases resolution
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Zernike finds that unstained cells can be seen using phase angle rays.
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James Watson and Francis Crick discover DNA.
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Gerd Binnig and Heinrich Rohrer invent the scanning tunneling microscope that can produce 3-dimensional images at the atomic level.
