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Jan 1, 1485
Glass used to study small objects
Leonardo da vinci uses glass to observe small objects -
Compound microscope
robert hooke developed the compound microscope and was able to describe cells. -
Microscopic plant book published
Nehemiah Grew published the first well illustrated book on the autonomy of plants on a microscopic level. -
Observation of unicellular organisms
Anton van Leeuwenhoek observed pepper corns soaked in water expecting to find little pins or needles that he believed gave the paper corn its spicy taste but did not find what he was hoping for. -
Bacteria was discovered
Anton discovered bacteria from observation of his saliva. -
Period: to
Proposition of Cell theory
Matthias Schneiden and Theodor Schwan proposed cell theory saying that all plants and animals are composed of groups of cells and that the cell is the basic unit of all living things. -
Cell theory develops
Rudolph Virchow extends the theory by saying that new cells are only formed out of old cells. -
Period: to
X-rays used
X-rays were used to produce different images of molecules which helped Dr watson and crik to discover DNA. -
New microscope developed
Fritz Zerenekie developed a phase contact microscope which allowed cells to be viewed more clearly. -
Laser microscopes
Winfried Denk made a confocal microscope that used lasers to create a 3D image that could be studied.