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slovo definícia quadrant (encz) quadrant,kvadrant n: Milan Svoboda quadrant (gcide) Octant \Oc"tant\, n. [L. octans, -antis. fr. octo eight. See Octave.] 1. (Geom.) The eighth part of a circle; an arc of 45 degrees. [1913 Webster] 2. (Astron. & Astrol.) The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees. [1913 Webster] 3. An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O[deg], but being itself the eighth part of a circle. Cf. Sextant. [1913 Webster] 4. (Math. & Crystallog.) One of the eight parts into which a space is divided by three coordinate planes. [1913 Webster] Quadrant (gcide) Quadrant \Quad"rant\, n. [L. quadrans, -antis, a fourth part, a fourth of a whole, fr. quattuor four: cf. F. quadrant, cadran. See Four, and cf. Cadrans.] 1. The fourth part; the quarter. [Obs.] --Sir T. Browne. [1913 Webster] 2. (Geom.) The quarter of a circle, or of the circumference of a circle, an arc of 90[deg], or one subtending a right angle at the center. [1913 Webster] 3. (Anal. (Geom.) One of the four parts into which a plane is divided by the coordinate axes. The upper right-hand part is the first quadrant; the upper left-hand part the second; the lower left-hand part the third; and the lower right-hand part the fourth quadrant. [1913 Webster] 4. An instrument for measuring altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90[deg], with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction. [1913 Webster] Gunner's quadrant, an instrument consisting of a graduated limb, with a plumb line or spirit level, and an arm by which it is applied to a cannon or mortar in adjusting it to the elevation required for attaining the desired range. Gunter's quadrant. See Gunter's quadrant, in the Vocabulary. Hadley's quadrant, a hand instrument used chiefly at sea to measure the altitude of the sun or other celestial body in ascertaining the vessel's position. It consists of a frame in the form of an octant having a graduated scale upon its arc, and an index arm, or alidade pivoted at its apex. Mirrors, called the index glass and the horizon glass, are fixed one upon the index arm and the other upon one side of the frame, respectively. When the instrument is held upright, the index arm may be swung so that the index glass will reflect an image of the sun upon the horizon glass, and when the reflected image of the sun coincides, to the observer's eye, with the horizon as seen directly through an opening at the side of the horizon glass, the index shows the sun's altitude upon the scale; -- more properly, but less commonly, called an octant. Quadrant of altitude, an appendage of the artificial globe, consisting of a slip of brass of the length of a quadrant of one of the great circles of the globe, and graduated. It may be fitted to the meridian, and being movable round to all points of the horizon, serves as a scale in measuring altitudes, azimuths, etc. [1913 Webster] quadrant (wn) quadrant n 1: a quarter of the circumference of a circle [syn: quadrant, quarter-circle] 2: any of the four areas into which a plane is divided by two orthogonal coordinate axes 3: the area enclosed by two perpendicular radii of a circle 4: a measuring instrument for measuring altitude of heavenly bodies QUADRANT (bouvier) QUADRANT. In angular measures, a quadrant is equal to ninety degrees. Vide Measure.

podobné slovo definícia quadrantanopia (encz) quadrantanopia, n: quadrantid (encz) Quadrantid,jedno ze souhvězdí Pavel Machek quadrants (encz) quadrants,kvadranty n: pl. Milan Svoboda Earth quadrant (gcide) Earth \Earth\ ([~e]rth), n. [AS. eor[eth]e; akin to OS. ertha, OFries. irthe, D. aarde, OHG. erda, G. erde, Icel. j["o]r[eth], Sw. & Dan. jord, Goth. a[imac]r[thorn]a, OHG. ero, Gr. ?, adv., to earth, and perh. to E. ear to plow.] 1. The globe or planet which we inhabit; the world, in distinction from the sun, moon, or stars. Also, this world as the dwelling place of mortals, in distinction from the dwelling place of spirits. [1913 Webster] That law preserves the earth a sphere And guides the planets in their course. --S. Rogers. [1913 Webster] In heaven, or earth, or under earth, in hell. --Milton. [1913 Webster] 2. The solid materials which make up the globe, in distinction from the air or water; the dry land. [1913 Webster] God called the dry land earth. --Gen. i. 10. [1913 Webster] He is pure air and fire, and the dull elements of earth and water never appear in him. --Shak. [1913 Webster] 3. The softer inorganic matter composing part of the surface of the globe, in distinction from the firm rock; soil of all kinds, including gravel, clay, loam, and the like; sometimes, soil favorable to the growth of plants; the visible surface of the globe; the ground; as, loose earth; rich earth. [1913 Webster] Give him a little earth for charity. --Shak. [1913 Webster] 4. A part of this globe; a region; a country; land. [1913 Webster] Would I had never trod this English earth. --Shak. [1913 Webster] 5. Worldly things, as opposed to spiritual things; the pursuits, interests, and allurements of this life. [1913 Webster] Our weary souls by earth beguiled. --Keble. [1913 Webster] 6. The people on the globe. [1913 Webster] The whole earth was of one language. --Gen. xi. 1. [1913 Webster] 7. (Chem.) (a) Any earthy-looking metallic oxide, as alumina, glucina, zirconia, yttria, and thoria. (b) A similar oxide, having a slight alkaline reaction, as lime, magnesia, strontia, baryta. [1913 Webster] 8. A hole in the ground, where an animal hides himself; as, the earth of a fox. --Macaulay. [1913 Webster] They [ferrets] course the poor conies out of their earths. --Holland. [1913 Webster] 9. (Elec.) The connection of any part an electric conductor with the ground; specif., the connection of a telegraph line with the ground through a fault or otherwise. Note: When the resistance of the earth connection is low it is termed a good earth. [Webster 1913 Suppl.] Note: Earth is used either adjectively or in combination to form compound words; as, earth apple or earth-apple; earth metal or earth-metal; earth closet or earth-closet. [1913 Webster] Adamic earth, Bitter earth, Bog earth, Chian earth, etc. See under Adamic, Bitter, etc. Alkaline earths. See under Alkaline. Earth apple. (Bot.) (a) A potato. (b) A cucumber. Earth auger, a form of auger for boring into the ground; -- called also earth borer. Earth bath, a bath taken by immersing the naked body in earth for healing purposes. Earth battery (Physics), a voltaic battery the elements of which are buried in the earth to be acted on by its moisture. Earth chestnut, the pignut. Earth closet, a privy or commode provided with dry earth or a similar substance for covering and deodorizing the f[ae]cal discharges. Earth dog (Zo["o]l.), a dog that will dig in the earth, or enter holes of foxes, etc. Earth hog, Earth pig (Zo["o]l.), the aard-vark. Earth hunger, an intense desire to own land, or, in the case of nations, to extend their domain. Earth light (Astron.), the light reflected by the earth, as upon the moon, and corresponding to moonlight; -- called also earth shine. --Sir J. Herschel. Earth metal. See 1st Earth, 7. (Chem.) Earth oil, petroleum. Earth pillars or Earth pyramids (Geol.), high pillars or pyramids of earth, sometimes capped with a single stone, found in Switzerland. --Lyell. Earth pitch (Min.), mineral tar, a kind of asphaltum. Earth quadrant, a fourth of the earth's circumference. Earth table (Arch.), the lowest course of stones visible in a building; the ground table. On earth, an intensive expression, oftenest used in questions and exclamations; as, What on earth shall I do? Nothing on earth will satisfy him. [Colloq.] [1913 Webster]