CONVEX SURFACE, see in an item. A convex body.

*ÂÛÏÓÊËÎÅ the BODY, a geometric object having that property, that the cutting bridging his two any point is contained in a nem bodily (napr., the body a is convex, the body is not convex). A sphere, a cube - examples of a convex body. Any cohesive part of border of a convex body calls as a convex surface.

*ÂÛÏÓÊËÎÑÒÜ And the CONCAVE CAMBER, properties of the plot of the function y = f (x) (curve), consisting in a volume, that each arch of a curve is not higher (buldge from top to bottom, or a concave camber up) or is not lower (a concave camber from top to bottom, or buldge up) than its subtending chord.

LEVELLING, in statistics - a method through which receive analytical and actuarial expression of the regularity basing the given empirical lines of statistical data.

INDICATIVE MOTIONS, express mental (especially emotional) conditions animal and the person, intonations of a voice, gestures, etc. show in a facial expression, pantomimike.

VYREZUB, a fish of a set karpovyh. The length up to 72 sm, weighs up to 8 kg. In basins of Black and Azov seas. In a bass. The Caspian m. the subspecies vyrezuba - kutum dwells. Object of a craft.

VYRY, in vostochnoslavjanskoj mythologies paradise where birds and showers died dwell. Keys from Vyrija remain deposited for a bird.

DEGENERATES Ivan Grigorjevich (?-1564), the clerk, the chief of construction Svijazhska in 1551, siege towers near Kazan (1552), of some strengths in 1557. Voevoda in Astrakhan in 1558-60. It is executed in the season oprichniny.

DEGENERATION, - consists of physics in a volume, that value of some physical quantity defining system, napr., powers, it is equal to different system conditions; the figure of such conditions calls as a degeneracy multiplicity. Degeneration testifies to a fixed symmetry of object (system) and is removed by external actions.

DEGENERATION the TEMPERATURE, temperature, is lower which in gases quantum effects, the bound with identity of particles (see show. Identity a principle). For a Bose gas of degeneration temperature Tâ is peer to temperature, is lower which descends Boze - the Einstein condensation, for Fermi gas of phase change does not descend, and Tv = EF/k, where EF - maximum power of particles at T = 0 (fermi-power), k - Boltsmana a stationary value.

The DEGENERATE GAS, quantum gas at the temperature of is lower than degeneration of temperature Tv. In a theoretical degenerate gas of bosons descends Boze - the Einstein condensation. Degeneration occurs, when a wavelength de Brojlja, conforming to a thermal-motion energy of particles, becomes comparable with mean distance between them. In routine nuclear or molecular gases of degeneration does not descend. For electrons in metals Tv 10000 To, therefore electronic gas in metals - always a degenerate gas.

VYRTSJARV, lake in a central part of Estonia. The area 270 êì2. An average depth of 2,8 m. Into lake runs r. Vjajke-Emajygi, escapes r. Emajygi. It is navigable. Landing stage Jyesuu.

SLASH, in metal working - the operation of a sheet-metal forming - obtaining of flat component parts by branch of a material from preparation on a close circuit in a dinking die (napr., circular preparations for an extrusion of pans).

VYRUBOVA Anna Aleksandrovna (1884-1964), the maid of honour of empress Aleksandry Fedorovny (with 1904). Posrednitsa between imperial family and G.E.Rasputinym. With 1920 in emigration. Memories: " Pages from my life ". Ò. n. " Diary Vyrubovoj " - a forgery.

TRANSPLANTATION, in metal working - the forge operation - building of joint thickenings on rod or tubular billets by reduction of their length (the partial upsetting). Transplantation receive bolts, rivets, flanges on pipes, etc.

SALTING - OUT, secretion of substance from his solution gaining of other substance (salt more often), having the greater dissolubility. A salting - out apply at a soap manufacture, dyes and many other products.

VYSELOK (vyselki), in Russia village settlements, which all inhabitants have moved from other occupied point. Routinely saved the title of a former settlement with add-on of word "Vyselok".

SCRAPING of the UTERUS, surgical operation abortions (abortion) or with other medical or diagnostic purpose (napr., obtaining of a scraping of a mucous membrane of a uterus for consequent histological probe). Carry out in a hospital.