doped germanium
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germanium — /jeuhr may nee euhm/, n. Chem. a scarce, metallic, grayish white element, normally tetravalent, used chiefly in transistors. Symbol: Ge; at. wt.: 72.59; at. no.: 32; sp. gr.: 5.36 at 20°C. [1885 90; GERMAN(Y) + IUM] * * * Chemical element with… … Universalium
Gamma spectroscopy — The gamma ray spectrum of natural uranium, showing about a dozen discrete lines superimposed on a smooth continuum, allows the identification the nuclides 226Ra, 214Pb, and 214Bi of the uranium decay chain. Gamma ray spectroscopy is the… … Wikipedia
Spitzer Space Telescope — The Spitzer Space Telescope prior to launch General information NSSDC ID 2003 038A … Wikipedia
Programmable metallization cell — The programmable metallization cell, or PMC, is a new form of non volatile computer memory being developed at Arizona State University and its spinoff, Axon Technologies. PMC is one of a number of technologies that are being developed to replace… … Wikipedia
Amperex Electronic — Infobox Company company name = Amperex Electronic Corporation company company type = Electronics manufacturer company slogan =Tomorrow s Technology Today foundation = 1920s location = Brooklyn, New York; Hicksville, New York; Slatersville, Rhode… … Wikipedia
Frank J. Low — Frank James Low (born Mobile, Alabama, 23 November 1933) is a solid state physicist who become a leader in the new field of infrared astronomy, after inventing the gallium doped germanium bolometer in 1961. This detector extended the range of the … Wikipedia
Meanings of minor planet names: 12001–13000 — As minor planet discoveries are confirmed, they are given a permanent number by the IAU s Minor Planet Center, and the discoverers can then submit names for them, following the IAU s naming conventions. The list below concerns those minor planets … Wikipedia
Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) … Wikipedia
Bipolar junction transistor — BJT redirects here. For the Japanese language proficiency test, see Business Japanese Proficiency Test. PNP … Wikipedia
Covalent superconductor — Covalent semiconductors are such solids as diamond, silicon, germanium, silicon carbide and silicon germanium where atoms are linked by covalent bonds. Most of those materials, at least in their bulk form, are well studied and rarely hit the… … Wikipedia
Multijunction photovoltaic cell — Multi junction solar cells or tandem cells are solar cells containing several p n junctions. Each junction is tuned to a different wavelength of light, reducing one of the largest inherent sources of losses, and thereby increasing efficiency.… … Wikipedia
