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Jan 1, 1285
Invention of spectacles
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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
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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 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.
Theodor Schwann and Matthias Schleiden created the Cell Theory. -
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.
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.
