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Oct 10, 1243
Roger Bacon
Roger Bacon (1214 - 1294) used a convex lens as a magnifying glass -
Period: Apr 6, 1300 to
The Cell Theory
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Robert Hooke
Robert Hooke (1635 - 1703) further developed the compound microscope. He first described cells, as lots of little boxes. -
Anton van Leeuwenhoek
Described unicellular organisms as 'animacules', from a drop of stagnant rain water. He discovered bacteria from his observations of saliva. -
Robert Brown
Discovered nucleus -
Mathias Schleiden & Theodor Schwann
They proposed the theory that all living matter is composed of small units called cells -
Rudolf Virchow
He proposed that all cells arise from cells as animals come only form animals and plants only from plants -
Walter Flemming
Described cell division (mitosis) -
Ernst Ruska
Built the first electron microscope -
Paul Kirkpatrick and Albert Baez
Built the first x-ray microscope -
The First Synchrotron!!
The first synchrotron became operational in the USA -
James Watson & Francis Crick
The X-ray diffraction image reveled a crystalline image of DNA which enabled Watson and Crick to reveal the structure of DNA -
Winfried Denk
Two-photon fluorescence microscope