-
Period: Jan 1, 1500 to
Cell Theory
-
Hans and Zacharias Janssen
Zacharias Janssen invented the microscope with the help of his father Hans. He made the microscope out of 2 convex lenses and a tube. -
Robert Hooke
Used Janssens microscope and discovered the cellular composition of a cork. He introduced the word cell into science.
Technology: Janssens microscopes -
Anton van Leeuwenhoek 1674-1683
In 1674 he discovered polishing lenses made the magnification in microscopes higher, animacules, and bacteria from a saliva sample.
(first to see actual living cells)
Technology: Still primitive microscope, but zoomed more than Janssens. -
Matthias Schleiden
Matthias Schleiden discovered plants are made of cells.
Technology: Refined microscope -
Theodore Schwann
Discovered all animals are composed of cells.
Technology: Refined microscope -
Rudolph Virchow
Rudolph Virchow was the first to state all living things form from other living things.
Technology: Refined microscope -
Modern Cell Theory
All known living things are made up of one or more cells. All living cells arise from pre-existing cells. The cell is a fundamental unit of structure, and function in all living organisms.
