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Cell Theory Timeline
Transcript of Cell Theory Timeline
Schwann Rudolf Virchow Louis Pasteur http://micro.magnet.fsu.edu/optics/timeline/people/janssen.html http://micro.magnet.fsu.edu/primer/museum/janssen.html ...invented the first Compound Microscope, which was able to magnify up to 10x ...was a spectacle maker in Middleburg, Holland sources: ...invented the spring control of the balance wheel in watches ...invented the first reflecting telescope ...developed the combustion theory and Hooke's Law ...DISCOVERED CELLS! He noticed "pores" as he was studying cork (pictured right) under his microscope. ...reached magnifications of 50x ...published a book covering the construction of microscopes, the spectrum of color, the molecular causes of fire, the crystal structure of objects, and the anatomy of insects. sources: http://www.science-of-aging.com/timelines/hooke-history-cell-discovery.php http://roberthooke.com/ ...believed to have worked with his father, hence the controversial origin of the microscope ...was originally a tradesman in Delft, Holland, but also known to have been a surveyor, wine assayer, and minor city official ...discovered bacteria, microscopic protists, sperm and blood cells, microscopic nematodes and rotifers, and much more! ...was inspired by Robert Hooke's book, Micrographia ...is known to have had over 500 microscopes! (probably all of them simply "powerful magnifying glasses"-a drawing is shown right) ...reached magnification of over 200x source: http://www.ucmp.berkeley.edu/history/leeuwenhoek.html ...studied botany and medicine in Göttingen and Berlin ...studied law at Heidelberg ...wrote Contributions to Pytogenesis, which stated that the different parts of a plat were made up of cells or the derivitives of cells ...recognized the significance of the nucleus (which was discovered by Robert Brown in 1831) ...was the first German biologist to accept Darwin's theory of evolution sources: http://www.nndb.com/people/751/000278914/ http://www.britannica.com/EBchecked/topic/527571/Mathias-Jacob-Schleiden 1595 1665 1674-1698 1838 ...spent much of his freetime as a boy making little machines of all kinds. ...studied in Colongne, Bonn, Würzburg, and Berlin ... was the chair of anatomy at the Roman Catholic university of Louvain for nine years ...disapproved spontaneous generation and explained the cell theory developed by him and Matthias Schleiden in his book Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals (which stated that all living things are made up of cells) sources: http://www.nndb.com/people/357/000096069/ http://scienceworld.wolfram.com/biography/Schwann.html 1847 ...explained his belief that diseases originated in cells rather than tisssues, organs, or organisms in his book Cellular Pathology ...popularized the belief that "every cell originates from another cell" in his time as a medical researcher and teacher ...named and described leukemia ...was actively involved in the pro-democracy movement that took place in Germany 1848 ...esablished the first hospital trains during the Franco-German war, and even served on one himself source: http://www.nndb.com/people/904/000164412/ 1858 ...disproved spontaneous generation! ...developed the germ theory, which states that infectious diseases, as well as fermentation, are caused by germs ...helped develop immunizations for many viruses, including rabies and anthrax ...invented the process of pasteurization source: http://www.accessexcellence.org/RC/AB/BC/Louis_Pasteur.php http://web.mit.edu/invent/iow/pasteur.html 1870s