Biology pic

Timeline Activity(Biology 30) - Johnson

  • Period: 700 BCE to 800


    the Discovery of Nimrud lens, seen this one on facebook a couple of years ago maybe been used to as a fire starter but this not the first Microscope it's one of those artifacts being found/
  • Period: Jan 1, 1200 to Dec 31, 1300

    13th Century

    The increase in use of lenses in eyeglasses probably led to the wide spread use of simple microscopes (single lens magnifying glasses) with limited magnification.
  • Period: Jan 1, 1285 to Dec 31, 1300

    Salvino D'Armate

    probably invented eyeglasses in around 1285 as fur as my reading went.
  • Period: 1400 to 1500

    14th Century

    • History of Microscopes
    The discovery of the cell would not have been possible if not for advancements to the microscope(s); to present date.
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    Hans and Zacharias Janssen

    Hans and Zacharias Janssen, invented one of the first microscope in 1590
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    15th Century

    Most people didn't know about cells during this era or grasping the concept of cells(past-tense).as it was just progressing for better microscopes.
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    Robert Hooks

    Robert was one of the first person to observe living thing under a microscope examining flies etc, and on the same year he released his ground breaking Micrographia,
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    Francesco Redi

    In 1668, in one of the first examples of a biological experiment with proper controls, Redi set up a series of flasks containing different meats, half of the flasks sealed, half open. He then repeated the experiment but, instead of sealing the flasks, covered half of them with gauze so that air could enter.Although the meat in all of the flasks putrefied, he found that only in the open and uncovered flasks, which flies had entered freely, did the meat contain maggots.
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    Anton van Leeuwenhoek

    Antony Van Leeuwenhoek who used the microscope to start making discoveries, not just bigger pictures of things. The tradesman turned to crafting his own lenses, which had up to 300X magnification, a huge jump in power from most previous devices, the best of which were in the 20-30 x life-size range. He is credited with discovering bacteria, protists, nematodes..
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    18 Century

    Several technical innovations make microscopes better and easier to handle, which leads to microscopy becoming more and more popular among scientists. An important discovery is that lenses combining two types of glass could reduce the chromatic effect, with its disturbing halos resulting from differences in refraction of light.
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    Chester Moore Hall

    inventor who produced the first achromatic lenses.
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    John Needham

    Needham established from his observations that micro-organisms do not grow from eggs and proposed a theory of spontaneous generation whereby living organisms develop from non-living matter at the microscopic level
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    Lazzaro Spallanzani

    disproved the theory of spontaneous generation (1768) and doing extensive reproduction on animals.
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    19th century

    Biology Advancing, theory of evolution, the cell theory, etc.
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    Joseph Jackson Lister

    Contribution, Lister discovered a method of combining lenses that greatly improved image resolution by eliminating certain chromatic and spherical aberrations
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    Louis Pasteur

    disproves spontaneous generation
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    Ernst Abbe

    Ernst Abbe formulates a mathematical theory correlating resolution to the wavelength of light. Abbe’s formula makes calculations of maximum resolution in microscopes possible.
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    20th Century

    Biology technology advances, UV and Phase; By 1900, the theoretic limit of resolution for visible light microscopes (2000 angstroms) had been reached. In 1904, Zeiss overcame this limitation with the introduction the first commercial UV microscope (see modern example at left) with resolution twice that of a visible light microscope.
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    Frits Zernike

    Frits Zernike invents the phase-contrast microscope that allows the study of colourless and transparent biological materials.
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    Ernst Ruska

    Develops the electron microscope. The ability to use electrons in microscopy greatly improves the resolution and greatly expands the borders of exploration.
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    Lynn Margulis

    An American Biologist, , helped advance the study of the origins of cells. She developed the symbiotic theory, which states that bacteria played a major role in the development of living cells. This theory has become kn60own as the serial endosymbiosis theory, or SET.
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    Gerd Binnig and Heinrich Rohrer

    invent the scanning tunneling microscope that gives three-dimensional images of objects down to the atomic level.
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    Digital microscope

    having the ability to transmit images in 2D and 3D on a computer screen/software.
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    21st Century

    more advancements in technology(s)