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Equal channel angular extrusion — (ECAE) is an extrusion process, developed in the early 1990s in the Soviet Union. The technique is able to refine the microstructure of metals and alloys, thereby improving their strength according to the Hall Petch relationship. ECAE is unique… … Wikipedia
Section dorée — Nombre d or Pour l’article homonyme, voir Nombre d or (astronomie). La proportion définie par a et b est dite d extrême et de moyenne raison lorsque a e … Wikipédia en Français
Lambert azimuthal equal-area projection — The Lambert azimuthal equal area projection is a particular mapping from a sphere to a disk. It accurately represents area in all regions of the sphere, but it does not accurately represent angles. Intuitively, it gives a planar picture of the… … Wikipedia
Radar cross section — (RCS) is a measure of how detectable an object is with a radar. For example a stealth aircraft (which is designed to be undetectable) will have design features that give it a low RCS, as opposed to a passenger airliner that will have a high… … Wikipedia
Cross section (geometry) — For cross sections in architecture and engineering, see Multiview orthographic projection#Cross section … Wikipedia
Visual Angle Illusion — The visual angle, V degrees, subtended by a viewed object sometimes looks larger or smaller than its actual value, creating a visual angle illusion (V illusion).These V illusions have been explicitly described by many vision researchers,… … Wikipedia
Neutron cross section — Science with Neutrons Foundations Neutron temperature Flux · Radiation … Wikipedia
Biological small-angle scattering — Small angle scattering is a fundamental method for structure analysis of materials, including biological materials. Small angle scattering allows one to study the structure of a variety of objects such as solutions of biological macromolecules,… … Wikipedia
Golden angle — In geometry, the golden angle is the smaller of the two angles created by sectioning the circumference of a circle according to the golden section; that is, into two arcs such that the ratio of the length of the larger arc to the smaller is the… … Wikipedia
Solid angle — Solid Sol id (s[o^]l [i^]d), a. [L. solidus, probably akin to sollus whole, entire, Gr. ???: cf. F. solide. Cf. {Consolidate},{Soda}, {Solder}, {Soldier}, {Solemn}.] 1. Having the constituent parts so compact, or so firmly adhering, as to resist… … The Collaborative International Dictionary of English
conic section — Geom. a curve formed by the intersection of a plane with a right circular cone; an ellipse, a circle, a parabola, or a hyperbola. Also called conic. [1655 65] * * * Any two dimensional curve traced by the intersection of a right circular cone… … Universalium
