Drugs Information Online
Drugs and diseases reference index
 |
EN |
Electron microscope: Abbreviated EM. A microscope in which an electron beam replaces light to form the image.
EM has its pluses (greater magnification and resolution than optical microscopes) and minuses (you are not really "seeing" objects, but rather you are looking at their electron densities, and meaningless artifacts may abound). Nonetheless, EM has extended the range of the microscope.
EM was invented by a team led by Vladimir Zworykin, an engineer at the RCA Laboratory in Camden, New Jersey. The device was publicly unveiled in 1940.
The Belgian-born biochemist Albert Claude (1899-1983) was the first person to examine cells under EM and see a cancer-associated virus (thanks to EM). He did the lion's share of his research at the Rockefeller Institute (now the Rockefeller University) in New York and in 1974 shared the Nobel Prize in Physiology or Medicine with Christian De Duve and George Palade for "their discoveries concerning the structural and functional organization of the cell."
Library > Literature & Language > Dictionary n. Any of a class of microscopes that use electrons rather than visible light to produce magnified images, especially of ...
Electron Microscopy. What are Electron Microscopes? Electron Microscopes are scientific instruments that use a beam of highly energetic electrons to examine objects on a ...
An electron microscope is a type of microscope that uses electrons to illuminate a specimen and create an enlarged image. Electron microscopes have much greater resolving ...
Cool Customer To keep the microscope’s vacuum pump from overheating, Krasnow used an air conditioner from a liquid-nitrogen generator he had built previously Cody ...
Learn about the scanning electron microscope and its uses.