Science 7 - History of Microscope

• • Hans and Zacharias Janssen of Holland in the 1590’s created the “first” compound microscope.
• The father of microscopy, Anton Van Leeuwenhoek of Holland (1632-1723). Anton Van Leeuwenhoek was the first to see and describe bacteria (1674), yeast, plants, the teeming life in a drop of water, and the circulation of blood corpuscles in capillaries.
• In 1665, the English physicist Robert Hooke looked at a slice of cork through a microscope lens and noticed some "pores" or "cells" in it. Hooke was the first person to use the word "cell" to identify microscopic structures when he was describing cork
• 1938-Ernst Ruska = Developed the electron microscope. The ability to use electrons greatly improves the resolution and greatly expands the borders of exploration
• • 1981-Gerd Binnig & Heinrich Rohrer = Invented the scanning tunneling microscope that gives 3-D images of objects down to the atomic level.
• • Felix Dujardin - Concluded that cells contain a thick jelly fluid
• 1903 - Richard Zsigmondy = Developed the ultra-microscope and is able to study objects below the wavelength of light.
• Robert Brown -Coined the term "cell". Observed cells found in a cork using a primitive microscope (1665)
• Theodore Schwann - Discovered that animals are composed of cells
• Rudolf Virchow - Concluded that cells come form pre-existing cells