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Timeline of microscopy

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| 1893 || Technological development || German professo {{w|August Köhler}} achieves an almost perfect image by designing a new method of illumination which uses a perfectly defocused image of the light source to illuminate the sample. The now called {{w|Kohler illumination}} turns an unparalleled illumination system. Using double diaphragms, the system provides triple benefits of a uniformly illuminated specimen, a bright image and minimal glare. <ref name="History of Microscopes"/><ref name="Fundamentals of Forensic Photography: Practical Techniques for Evidence Documentation on Location and in the Laboratory"/> || {{w|Germany}}
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| 1897 || Scientific development || American physicist {{w|R.W. Wood}} describes the phenomenon of the [[w:Field electron emission |field emission of electrons]], the process of emitting electrons from an extremely small area of a cathodic surface in the presence of a strong eectric electric field.<ref name="Introduction to Microscopy by Means of Light, Electrons, X Rays, or Acoustics"/> || {{w|United States}}
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| 1900 || Technological development || The theoretic limit of resolution for visible light microscopes (2000 {{w|Å}}) is reached.<ref name="History of Microscopes"/> ||
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