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Kyeisha O'Leary
1
This is what a microscope looks like now because of all these people who helped invent it.
Microscope Time Line
By Kyeisha O'Leary
1590's
Dutch lens grinders Hans and Zacharias Janssen made the first microscope by placing two lenses in a tube.
1590's
1667
Robert Hooke studied various object with his microscope and publishes his results in Micrographia. Among his work were a description of cork and its ability to float in water.
1667
1675
1675
Anton van Leeuwenhoek uses a simple microscope with only one lens to look at blood, insects and many other objects. He was first to describe cells and bacteria, seen through his very small microscopes with, for his time, extremely good lenses.
1830
Joseph Jackson Lister reduces the problem with spherical aberration by showing that several weak lenses used together at certain distances gave good magnification without blurring the image.
1830
1878
1878
Ernst Abbe formulates a mathematical theory correlating resolution to the wavelength of light. Abbes formula make calculations of maximum resolution in microscopes possible.
1903
Richard Zsigmondy develops the ultramicroscope and is able to study objects below the wavelength of light.
1903
1832
Frits Zernike invents the contrast microscope that allows the study of colorless and transparent biological materials.
1832
1938
Ernst Ruska develops the electron microscope. The ability to use electrons in microscopy greatly improves the resolution and greatly expands the borders of exploration.
1938
1981
Gerd Binnig and Heinrich Rohrer invented the scanning tunneling microscope that gives three dimensional images of objects down to the atomic level.