Microscope History 1590 - Janseen Brothers invent the compound microscope. 1665 - Robert Hooke “discovers” cells in cork. Early 1700’s - von Leeuwenhoek makes many observations of cells including bacteria.
Light Microscope - LM Uses visible light to illuminate the object. Relatively inexpensive type of microscope. Can examine live or dead objects.
Electron Microscopes Use beams of electrons instead of light. Invented in 1939, but not used much until after WWII.