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Zacharias Janssen (1580-1638)
Janssen invented the first compund microscope in 1595. Janssen is one of the three people who have been associated with the invention of the telescope in the Netherlands in 1608. He was also tried in court for counterfeiting coins. -
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History Of Biology Timeline
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Robert Hooke (1635-1703)
Hooke's work around his law of elasticity led o the invention of the balance spring in 1660, which was a key part in allowing the mechanical watch to keep time accurately. Hooke was a member of the Royal Society from 1663. -
Antonie Van Leeuwenhoek (1632-1723)
Antonie Van Leeuwenhoek improved the microscope in1664. The single lens microscope he built could magnify >200x, which was a significant improvement of the microscope as the previous ones could only maginfy 20-30x. -
Carl Linnaeus (1707-1778)
Linnaeus was the one who laid the foundations for the modern biological naming scheme of binomial nomenclature. He also published the first edition of Systema Naturae in the Netherlands in 1735. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. -
Matthias Schleiden (1804-1881)
Schleiden concluded that all plants are made up of cells in 1838. Also, Schleiden and Schwann discovered the cell theory became the first to formulate what was then a informal belief as a principle of biology equal in importance to the atomic theory of chemistry, Schleiden also recognized the importance of the cell nucleus. -
Cell Theory
The Cell Theory was developed from three German scientist's discoveries. They are Matthias Schleiden, Theodor Schwann, and Rudolph Virchow. In 1838 the German Botanist Matthias Schleiden discovered that all plants were composed of cells. Then only a year later a German zoologist,Theodor Schwann, discovered that all animals were composed of cells. Later in 1855 a German physician named Rudolph Virchow was doing experiments with diseases when he found that all cells come from other existing cells. -
Theodor Schwann (1810-1882)
Schwann's many contributions to include the development of the cell theory, the discovery of Schwann cells in the pepsin, the discovery of the organic nature of yeast, and the invention of the term metabolism. -
Rudolf Virchow (1831-1902)
Rudolf Virchow stated that new cells are formed only from existing cells in 1855. His most widely known theory is being the first person to recognize leukemia cells. Schleiden, Schwann and Virchow's observations have led to the cell theory that all living things are composed of cells. -
Alfred Wallace (1823-1913)
Wallace was the co-discoverer of the theory of natural selection. Wallace supplied Darwin with birds for his studies and decided to seek Darwin's help in publishing his own ideas on evolution. He sent Darwin his theory in 1858, which, to Darwin's shock, nearly replicated Darwin's own. -
Charles Darwin (1809-1882)
In 1859, Darwin introduced his scientific theory that this branching pattern of evolution resulted from a process that he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding.
