Microscopy, electron (EM)
- Microscopy, electron (EM)
- Microscopy 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."
Medical dictionary.
2011.
Look at other dictionaries:
Microscopy — is the technical field of using microscopes to view samples and objects that cannot be seen with the unaided eye (objects that are not within the resolution range of the normal eye). There are three well known branches of microscopy, optical,… … Wikipedia
Microscopy — The examination of minute objects by means of a microscope, an instrument which provides an enlarged image of an object not visible with the naked eye. Aside from the usual microscopy, there are various special types of microscopy including, for… … Medical dictionary
Microscopy Listserver — The Microscopy Listserver [1] is a network based discussion forum giving members of the scientific community a centralized Internet address to which questions/comments/answers in the various fields of Microscopy or Microanalysis can be rapidly… … Wikipedia
electron — /i lek tron/, n. 1. Also called negatron. Physics, Chem. an elementary particle that is a fundamental constituent of matter, having a negative charge of 1.602 × 10 19 coulombs, a mass of 9.108 × 10 31 kilograms, and spin of 1/2, and existing… … Universalium
microscopy — Synonyms and related words: electron microscopy, electron optics, infrared spectroscopy, microbiology, micrography, microphotography, microphysics, microscopics, microspectroscopy, optical physics, optics, optometry, photography, spectrometry,… … Moby Thesaurus
Electron crystallography — is a method to determine the arrangement of atoms in solids using a transmission electron microscope (TEM). Contents 1 Comparison with X ray crystallography 2 Radiation damage 3 Protein structures determined by electron crystallography … Wikipedia
Electron beam induced deposition — (EBID) is a process of decomposing gaseous molecules by electron beam leading to deposition of non volatile fragments onto a nearby substrate. Process Focused electron beam of scanning electron microscope (SEM) or scanning transmission electron… … Wikipedia
Electron diffraction — is a technique used to study matter by firing electrons at a sample and observing the resulting interference pattern. This phenomenon occurs due to the wave particle duality, which states that a particle of matter (in this case the incident… … Wikipedia
Electron retrodiffuse — Électron rétrodiffusé Les électrons rétrodiffusés (back scattered electrons en anglais) sont des électrons résultant de l impact d un faisceau d électrons dit primaire et d un échantillon. Les électrons primaires sont entrés en collision avec des … Wikipédia en Français
Microscopy and Microanalysis — Discipline … Wikipedia
