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In 1595, Jansen was created for constructing the first compound microscope.
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In 1665, Hooke published the book Micrographia. Micrographia explained how Hooke creatd a compound microscope and used it to study cells sych as bryozoans and foraminferia. The book can be found at:
Micrographia -
In 1678 Leeuwenhook reported that he observed the protoza through his microscope. This made people realize that there are other living organisms that the ones that we can see. He also discovered parasitic protists, sperm cells, blood cells and more.
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In 1823 Achromatic lenses where introduced to scienctist making it possible for them to see 1/1000 if a millimeter. This lead to them being capable of seeing more cells and bacterias.
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In 1833, Brown shared his description of the cell nucleous in the cells of the orchid.
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In 1839, Theodor Schwann published the book, "Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals" which told people his theory that all living organisms are made up of cells. The idea of the book came from a discusion he had had the night before with Matthais Jakob Schleiden.
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In 1840, Donne' proposed the first micrographs in France. A micrograph is a picture or image taken from a microscope.
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In 1840, Albrecht von Roelliker discovered that sprem and eggs are cells too.
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In 1858, Rudolf Virchow shared his conclusion, omnis cellula e cellula, which means cells develope from only other existing cells.
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In 1873, Ernest Abbe published his theory of microscopes. In his theory he made clear that he did not aprove of using eye pieces with too high magnification because they could distort cells.
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In 1873, Ernst Leitz introduced a microscope with a turret, or revolving mount, in order to study five different samples without removing and replacing slides.
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In 1878, oil immersion lenses where introduced which resulted in the discovery of homogeneous optical paths.
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In 1879, Walther Flemming discovered mitosis using the five slide microscope. This perticular microscope helped him because he was easily able to compare five different slides at once.
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In 1880, August Kohler invented lmaps with filters for microscioes making the image of the cell more clear because the microscope itself is providing the light.
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Ernst Abbe invented the apochromatic objective in order for reds, blues, and yellows into focus with cells that have ten or less elements.
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In 1904, the first commercial UV microscope was invented by Zeiss based off Abbe's formula.
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In 1930, Fritz Zernik found out that he could see unstained cells using the phase angles of rays.
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In 1931, the first electron microscope was built by Max Knoll and Ernst Ruska.
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Despite the fact that the microscope came out over 100 years ago, it wasn't until 1941 when the first commercial micrscope was put on the market.
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In 1998, mice were cloned from somatic cells. This was the first step towards the cloning of animals and the study of cloning humans.
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All of the events in this timeline give my classmates and I the oppertunity to learn about cells, bacteria, DNA, single celled organisms, cloning, and more.
