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The History of Microscopes and Cell Theory

By hayleyandros
  • Jan 1, 1214

    Roger Bacon Writes About the Concept of Lenses

    Bacon, a monk in Oxford, wrote on the topic of nature and often refrenced the concepts and use of lenses.
  • Jan 1, 1285

    Invention of Spectacles

    Salvano d'Areamento degli Amati of Florence has a statement on his grave stating that he invented the spectacles.

  • Invention of the Microscope

    William Boreel and Zacharias Jansen are the inventors of the micrscope. At first, it could only be used for opaque objects and had a magnification of 20X

  • Invetion of The Telescope

    The telescope was invented by James Adriaanzoon (James Metius) in 1608.
  • Robert Hook Publsihes "Microgphia"

    Robert Hook Publsihes "Microgphia"

    It was a folio of 38 copper plate illustrations of objects drawn with the aid of his microscope. He was the first to describe and name the term "cell".

  • Anthony van Leeuwenhoek Discovers Important Biology Information

    He discovered bacteria, free-living and parasitic microscopic protists, sperm cells, blood cells and more. He had a device that magnified up to 300X.
  • Discovery of Plant Cells

    Discovery of Plant Cells

    Matthias Jakob Schleiden was the first to recognize that all plants, and all the different parts of plants, are composed of cells.
  • Discovery of Animal Cells

    Discovery of Animal Cells

    Theodor Schwann was the first to discover animcal cells at the same time that plant cells were disovered by Schleiden.

  • Achromatic Lenses Introduced

    Achromatic lenses introduced now provide resolution of 1 micron or 1/1000mm.

  • Cell Theory

    Theodor Schwann and Matthias Schleiden formally propose the "cell theory".

  • First Micrographs

    Donne' publishes the first micrographs in France.
  • More Cell Theory Work

    More Cell Theory Work

    Rudolf Virchow exteneded the work of Schwann and Schleiden by discovering that all living cells must rise from pre-existing cells.
  • Abbe's Theory

    Abbe's Theory

    He made the clear difference between magnification and resolution and criticized the practice of using eye pieces with to high a magnification as "empty magnification".
  • Revolving Mount (Turret)

    Revolving Mount (Turret)

    Ernst Leiz microscope is introduced with a revolving mount for 5 objectives.

  • Mitosis

    Walther Flemming discovers mitosis.

  • Microscope Lamp

    August Kohler had worked out a light source and condenser position to obtain the best image projection.

  • Apochromatic Objective

    Ernst Abbe designs apochromatic objective lens that brings red, yello and blue into one focus.
  • First Commercial UV Microscope

    First Commercial UV Microscope

    The first commercial UV microscope was made by Zeiss. The resolution based on Abbe's formula is twice that of a visible light microscope.

  • Action of Lens is Described

    A writing describing the action of the lens appears in the Arabian Alhazen.