Rev3

History of the Microscope and Cell Theory

By MollyDolman
  • Jan 1, 1285

    Invention of spectacles

  • Jan 1, 1292

    Concept of Lenses is brought up.

    Roger Bacon referenced the concepts of lenses in writing

  • Invention of the world's first compound microscope.

    Zacharias and Hans Janssen invent the world's first compound microscope.

  • James Metius invented the telescope

  • Robert Hooke writes a book using microscope.

    Robert Hooke writes a book using microscope.

    Robert Hooke writes a book in which he draws illustrations using the microscope.

  • Robert Hooke creates theory of 'cells.'

    Robert Hooke saw 'cells' in a piece of cork.
  • Leeuwenhoek discovers minute cells and bacteria.

    Leeuwenhoek discovers minute cells and bacteria.

    Leeuwenhoek discovered bacteria, protists, sperm cells, blood cells and more with his simple microscope.

  • Leeuwenhook discovers cells

    Leeuwenhook reports discovering little animals (cells) through his microscope.

  • The first lenses for glasses are invented

    Chester Moore Hall invented achromatic lenses for spectacles.

  • Generalized Cell Theory

    A German, C. F. Wolff, comes up with a generalized cell theory.

  • Developments in lense strength

    Joseph Jackson Lister reduces the 'chromatic effect' that multiple weak lenses, together, distances apart, can make a stronger lens.

  • Discovery of the Nucleus

    Robert Brown discovers the nucleus of the cell. He emphasizes its importance in fertilization.
  • Creation of the Cell Theory.

    Creation of the Cell Theory.

    Theodor Schwann and Matthias Schleiden created the Cell Theory.
  • Plant cells are discovered.

    Plant cells are discovered.

    Matthias Jakob Schleiden discoverd that plants were made up of cells.

  • 'Omnis cellula e cellula' is published.

    Rudolf Virchow writes a concise statement called 'omnis cellula e cellula,' which means 'every cell stems from another cell.'

  • Genetic testing is started

    Gregor Johann Mendel, begins tracking genetic changes in pea plants.

  • Cell Reproduction is discovered

    Rudolph Virchow proposed that all cells must arise from pre-existing cells.

  • 'Origin of Species' is published

    Charles Darwin writes 'Origin of Species' which illustrates heredity and changes in different species.

  • Spontaneous generation is disproved.

    Louis Pasteur disproves spontaneous generation.

  • Writing published on the theory of the microscope

    Ernst Abbe published writing on the theory of the microscope.

  • Mitosis is discovered

    Mitosis is discovered by German biologist, Walther Flemming.

  • Light source for microscopes is invented.

    Kohler creates a light source for microscopes. He created a lamp that obtained he best image projection.

  • Chromosomes are discovered

    Walther Fleming finds rods whilst examining cells he's dyed, and names them chromosomes.

  • Chromosome numbers in species

    Edouard van Beneden discovers that all members of the same species have the same number of chromosomes.
  • First commercial UV microscope is created.

    First commercial UV microscope is created.

    Zeiss creates the first commercial UV microscope with twice the resolution of a visible light microscope.

  • The first electron microscope is invented.

    The first electron microscope was invented by Max Knoll and Ernst Ruska

  • Invention of the phase-contrast microscope.

    Frits Zernike invents the phase-contrast microscope, which he uses to study transparent materials. In 1953, he wins a nobel prize in physics with it.

  • First commercially offered electron microscope

    he company, Siemens, distribute the first commercially offered electron microscope.

  • First ultra-microtome

    Porter and Blum built the first ultra-microtome.

  • A well-known DIC is patented.

    Nomarsky patents a ifferential interference contrast system.