quantum-mechanical amplifier
41Resistor — A typical axial lead resistor Type Passive Working principle Electrical resistance Invented Ge …
42Horace Hearne Institute — The Horace Hearne Jr. Institute for Theoretical Physics is at Louisiana State University. The Hearne Institute is funded by a donation of two endowed chairs by Horace Hearne Jr. and the State of Louisiana, as well as additional grants from a… …
43Directed-energy weapon — This article is about practical experiments with energy weapons. For fictional uses, see raygun. Humvee with Active Denial System mounted A directed energy weapon (DEW) emits energy in an aimed direction without the means of a projectile. It… …
44List of engineering topics — This page aims to list all topics related to the broad field of engineering. A more compact list can be found at list of basic engineering topics. See the bottom of the page for links to lists for specific engineering disciplines or for… …
45Addition — is the mathematical process of putting things together. The plus sign + means that two numbers are added together. For example, in the picture on the right, there are 3 + 2 apples meaning three apples and two other apples which is the same as… …
46Movie projector — This article is concerned with technical aspects of moving film projection. For non film movie projection, see digital cinema. For historical aspects, see the article history of cinema. 35 mm movie projector in operation …
47List of fictional elements, materials, isotopes and atomic particles — This list contains chemical elements, materials, isotopes or (sub)atomic particle that exist primarily in works of fiction (usually fantasy or science fiction). No actual periodic elements end in ite , though many minerals have names with this… …
48Columbia School of Engineering and Applied Science — School of Engineering and Applied Science redirects here. For other uses, see School of Engineering and Applied Science (disambiguation). Fu Foundation School of Engineering and Applied Science Established …
49Photodiode — Three Si and one Ge (bottom) photodiodes Symbol for photodiode …
50laser — /lay zeuhr/, n. Physics. a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase. Also called optical maser. [1955 60; …
