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Feb 7, 1200
Convex Lens
Roger Bacon used a convex lens as a magnifying glass -
1st compound microscope
2 spectacle makers hans and zacharias janssen constructed the first compound microscope using two lenses inside a tube -
robert hook
robert hook developed the compound microscope, including the use of the iris diaphram -
plants are made of cells
marchello malphigi sated that all plants are made up of chambers (cells) -
bacteria
anton van leeuwenhoek discovered becteria from his observations -
dutrochet
rene dutrochet stated that all animals and plants are made up of cells -
nucleus
Robert Brown discovers the nucleus -
creation of the cell theory
Matthias Schleiden adn Theodor Schwann made the cell theory -
completion of the cell theory
Rudolf Virchow said that all cells come from pre-existing cells -
mitosis
Walter Flemming describes first cell division -
electron microscopes
Ernst Ruska built first electron microscope -
synchroton
the first synchrotron operational in the US