beam matching
21colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …
22therapeutics — /ther euh pyooh tiks/, n. (used with a sing. v.) the branch of medicine concerned with the remedial treatment of disease. [1665 75; see THERAPEUTIC, ICS] * * * Treatment and care to combat disease or alleviate pain or injury. Its tools include… …
23photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
24Missile guidance — A guided bomb strikes a practice target Missile guidance refers to a variety of methods of guiding a missile or a guided bomb to its intended target. The missile s target accuracy is a critical factor for its effectiveness. Guidance systems… …
25Grassmann's law (optics) — In optics, Grassmann s law is an empirical result about human color perception: chromatic response is (approximately) linear. It was discovered by Hermann Grassmann.tatementIf a test color is the combination of two monochromatic colors, then the… …
26List of Raven challenges — This article details the many challenges that have been present over the seven series of Raven, the children s game show series.The many tasks and feats in which the warriors have to compete vary from series to series, some having been tweaked… …
27rocket and missile system — ▪ weapons system Introduction any of a variety of weapons systems that deliver explosive warheads to their targets by means of rocket propulsion. Rocket is a general term used broadly to describe a variety of jet propelled missiles… …
28Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …
29CIE 1931 color space — In the study of color perception, one of the first mathematically defined color spaces is the CIE 1931 XYZ color space, created by the International Commission on Illumination (CIE) in 1931.[1][2] The CIE XYZ color space was derived from a series …
30Anti-reflective coating — Many coatings consist of transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in the beams reflected from the interfaces, and constructive… …
