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First Compound Microscope
Jansen's MicroscopeZacharias Janssen invented the first compound microscope. While it only magnified between 3 and 9 times, it allowed him to view cells. -
Plant Growth
BBC Learning Zone John Baptista von Helmont was arrested for testing his theory on how plants grow. He thought plants ate dirt, but in his experiment found that the amount o dirt was the same while the plant had grown. -
Cell Walls
Robert HookeRobert Hooke used Janssen's microscope design to view cell walls in cork. Hooke was the first to use the term "cell" -
Protists and Bacteria
Antony van Leeuwenhoek Anton Van Leeuwenhoek discovered protists and bacteria. Also he discovered microscopic nemotodes, red blood cells, spern cells, rotifers and more. -
Leeuwenhoek's Publifications
Anton van LeeuwenhoekLeeuwenhoek Published his discoveries of different types of cells. -
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ISIS
ISISLorenz Oken publlished a scientific, cultural, and historical document called ISIS -
Angiosperms and Gymnosperms
Robert Brown
Robert Brown Developed the distinction between Angiosperms and Gymnosperms. Also he descovered that all cells are controlled by one central nucleus. -
Discovery of Pepsin
Theodor Schwann (German physiologist)Theodor Schwann discovered the digestive enzyme Pepsin. Defined the cell as the basic unit of animal structure. Used the term "Metabolism" to describe the chemical changes in living tissue. -
Plant Cells
Matthias Schleiden\
Matthias Schleiden Published that all plants were made uo of cells. He also tried to allign cell formation with crystal formation. -
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Pasteurization
Louis PasteurLouis Pasteur discovered the process of pasreurization. Pasteurization occurs when a liquid is heated and then cooled removing the bacteria. This process later led to the development of vaccines for anthrax and rabies. He also saved the beer, wine, and silk industries in France. -
Disease
Rudolph VirchowRudolph Virchow discovered that disease was caused by change in cells. Now diseases could be classified by cells instead of symptoms. -
Cell Structure
Albert von Roeliker
Roeliker studied the development of cephalopods and cell structure. In 1948 he founded the Journal of Scientific Zoology. -
Disections
AristotleAristotle is known for his many disections and his early understanding of Mendelion genetic concepts.
