Cell Theory and Microscopes

  • The First Microscope is invented

    The First Microscope is invented
    In 1590 Dutch lens makers Zaccharias and Hans Janssen invented the first microscope.(No Specific Date Was Found Only The Year)
  • Robert Hooke observes cork

    Robert Hooke observes cork
    English physicist Robert Hooke observes a sliver of cork through a microscope and notices cells and pores
  • Anton van Leeuwenhoek builds a simple microscope

    Anton van Leeuwenhoek builds a simple microscope
    Anton van Leeuwenhoek builds a simple microscope to examine blood yeast, insects, and many other tiny objects.He was also the first person ever to describe bacteria.He also invented new methods for grinding and polishing lenses that magnified up to 270 times. These lenses were the best at the time.
  • Microscopes are improved

    Microscopes are improved
    Technical innovations improve microscopes.At this time microscopy becomes popular among scientists.
  • Schleiden's discovery

    Schleiden's discovery
    Matthias Schleiden observes plants and states that all plants are made of cells
  • Theodor Schwan

    Theodor Schwan
    After investigation after investigation, Theodor Schwan states that animals are made of cells. Theodor Schwan and Mathias Schleiden are both contributors to the cell theory.
  • Rudolf Virchow's discovery

    Rudolf Virchow's discovery
    "All living things arise from pre-existing cells." This statement has become known as the biogenic law. Rudolf Virchow discovers that all living things come from pre-existing cells.
  • Ultra-Microscope

    Richard Zsigmondy invents the Ultra- microscope that is able to study objects below the wavelength of light. He later won the Nobel Prize in Chemistry in 1925.
  • Electron microscope

    Electron microscope
    An electron microscope is a type of microscope that uses electrons to create a three dimensional image. This microscope was co-invented by Ernst Ruska.
  • Scanning tunneling microscope

    Scanning tunneling microscope
    Gerd Binnig and Heinrich Rohrer invent the scanning tunneling microscope. This microscope gives a three dimensional image of the specimen.