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| Atanasoff–Berry Computer The Atanasoff–Berry Computer (ABC) was the world's first electronic digital computer, but it was not programmable. Conceived in 1937, the machine was designed only to solve systems of linear equations. It was successfully tested in 1942. However, its intermediate result storage mechanism, a paper card writer/reader, was unreliable, and when Atanasoff left Iowa State University for World War II assignments, work on the machine was discontinued. Atanasoff–Berry_Computer | |
| Amdahl's law Amdahl's law, also known as Amdahl's argument,In the limit, as N tends to infinity, the maximum speedup tends to 1 / (1-P). In practice, performance/price falls rapidly as N is increased once there is even a small component of (1 . Amdahl's_law | |
| Boron Boron () is the chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent metalloid element which occurs abundantly in the evaporite ores borax and ulexite. Several allotropes of boron exist; amorphous boron is a brown powder, though crystalline boron is black, extremely hard (9.3 on Mohs' scale), and a poor conductor at room temperature. Boron | |
| Crystallography Crystallography is the experimental science of determining the arrangement of atoms in solids. In older usage, it is the scientific study of crystals. The word "crystallography" is derived from the Greek words crystallon = cold drop / frozen drop, with its meaning extending to all solids with some degree of transparency, and graphein = write.Before the development of X-ray diffraction crystallography (see below), the study of crystals was based on the geometry of the crystals. Crystallography | |
| Declaration of the Rights of Man and of the Citizen The Declaration of the Rights of Man and of the Citizen () is a fundamental document of the French Revolution, defining the individual and collective rights of all the estates of the realm as universal. Influenced by the doctrine of natural rights, the rights of Man are universal:human nature itself. Declaration_of_the_Rights_of_Man_and_of_the_Citizen | |
| Gadolinium Gadolinium () is a chemical element that has the symbol Gd and atomic number 64. Gadolinium | |
| History of computing hardware Talk:History_of_computing_hardware | |
| Iowa State University The Iowa State University of Science and Technology, more commonly known as Iowa State University (ISU), is a public land-grant and space-grant research university located in Ames, Iowa, United States. Iowa State has produced a number of astronauts, scientists, Nobel laureates, Pulitzer Prize winners, and a variety of other notable individuals in their respective fields. Iowa_State_University | |
| Manhattan Project The Manhattan Project was the codename for a project conducted during World War II, primarily by the United States, to develop the first atomic bomb. Formally designated as the Manhattan Engineer District (MED), it refers specifically to the period of the project from 1942–1946 under the control of the U.S. Army Corps of Engineers, under the administration of General Leslie R. Groves. The scientific research was directed by American physicist J. Robert Oppenheimer. Manhattan_Project | |
| Quasicrystal Quasicrystals are structural forms that are both ordered and nonperiodic. They form patterns that fill all the space but lack translational symmetry. Classical theory of crystals allows only 2, 3, 4, and 6-fold rotational symmetries, but quasicrystals display symmetry of other orders (folds). Quasicrystal | |
| Casting (metalworking) In metalworking, casting involves pouring a liquid metal into a mold, which contains a hollow cavity of the desired shape, and then is allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process. Casting is most often used for making complex shapes that would be difficult or uneconomical to make by other methods. Casting_(metalworking) | |
| Parallel computing Parallel computing is a form of computation in which many calculations are carried out simultaneously, operating on the principle that large problems can often be divided into smaller ones, which are then solved concurrently ("in parallel"). There are several different forms of parallel computingbit-level, instruction level, data, and task parallelism. Parallel_computing | |
| Freezing In physical science, freezing or solidification is the process in which a liquid turns into a solid when cold enough. The freezing point is the temperature at which this happens. Melting, the process of turning a solid to a liquid, is almost the exact opposite of freezing. Freezing | |
| Magnetic refrigeration Magnetic refrigeration is a cooling technology based on the magnetocaloric effect. This technique can be used to attain extremely low temperatures (well below 1K), as well as the ranges used in common refrigerators, depending on the design of the system.The fundamental principle was suggested by Debye (1926) and Giauque (1927), and the first working magnetic refrigerators were constructed by several groups beginning in 1933. Magnetic_refrigeration | |
| Atomization In atomic spectroscopy, atomization stands for the conversion of a vaporized sample into atomic components. Liquid samples are first nebulized, the fine mist is transported into the atomization source (flame or plasma), where the solvent evaporates and the analyte is vaporized, then atomized. Atomization | |
| Clifford Berry Clifford Edward Berry (April 19, 1918 Clifford Berry was born in Gladbrook, Iowa to Fred Gordon Berry and Grace Strohm. He was the oldest of four children born to the couple Clifford_Berry | |
| Hierarchical INTegration Hierarchical INTegration, or HINT for short, is a computer benchmark that ranks a computer system as a whole (i.e. the entire computer instead of individual components). It measures the full range of performance, mostly based on the amount of work a computer can perform over time. Hierarchical_INTegration | |
| Boron nitride Talk:Boron_nitride | |
| Intermetallics Intermetallics or intermetallic compounds is a term that is used in a number of different ways. Most commonly it refers to solid state phases involving metals. There is a "research definition" adhered to generally in scientific publications, and a wider "common use" term. There is also a completely different use in coordination chemistry, where it has been used to refer to complexes containing two or more different metals. Intermetallics | |
| Atanasoff–Berry Computer Talk:Atanasoff–Berry_Computer |
