science assignment part A microscop timeline

  • Jan 1, 1300

    Art Of Grinding developed

    The art of grinding the lenses is developed in Italy and spectacles are invented and made to improve eyesight.
  • making the first microscope

    making the first microscope
    Dutch lens grinders Hans and Zacharias Janssen made the first microscope by placing two lenses in a single tube.
  • Using Microscopes to discover cells and bacteria

    Using Microscopes to discover cells and bacteria
    Anton van Leeuwenhoek uses a simple yet effective microscope even with its only one lense to look at insect, blood and other small objects he could look at. He was also the first person to describe cells and bacteria, seen through his very small effective microscope with extremely good lenses for his time.
  • Making the microscope easier to handle

    Making the microscope easier to handle
    Many technical innovations improved microscope and made them easier to handle, which makes using a micrscope become more popular among scientists. An important discovery is that lenses combine two types of glass which could reduce the chromatic effect, with its disturbing halos resulting from differences in refraction of light. (chromatic effect is a multi coloured visualization)
  • reducing sphericle aberration

    Joseph Jackson Lister reduces the problem with spherical aberration by showing that several weak lenses used together at different certain distances gave good magnification without blurring the image of the magnification (sphericle aberration is an opticle effect that occurs due to the increased refraction of light rays).
  • Maximum resolution in microscopes

    Ernst Abbe finds a mathematical theory correlating resolution to the wavelength of light. The formula helped to make calculations of maximum resolution in microscopes possible.
  • ultramicroscope

    Richard Zsigmondy developed a ultramicroscope and is capable to study objects below the wavelength of light.
  • Phase Contrast

    Frits Zernike invented the phase-contrast microscope that allowed scientist to study colorless and transparent biological materials
  • electron microscope

    Only siz years on and Ernst Ruska developed the electron microscope which gave scientist the ability to use electrons in microscopy which greatly improves the resolution and majorly expands the borders of exploration.
  • Scanning Tunneling Microscope

    Gerd Binnig and Heinrich Rohrer both invented the scanning tunneling microscope together which gives three-dimensional images of objects placed under the microscope down to the atomic level.
  • Conclusion

    As you can see from my timeline there have been many evolution stages for the microscope and there have also been many people who have helped to improve the microscope.