collimation axis

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• Collimation — Col li*ma tion, n. [Cf. F. collimation, fr. a false reading (collimare) for L. collineare to direct in a straight line; col + linea line. Cf. {Collineation}.] The act of collimating; the adjustment of the line of the sights, as the axial line of… …   The Collaborative International Dictionary of English

• collimation — The method, in radiology, of restricting and confining the x ray beam to a given area and, in nuclear medicine, of restricting the detection of emitted radiations from a given area of interest. [L. collineo, to direct in a straight line] * * *… …   Medical dictionary

• Error of collimation — Collimation Col li*ma tion, n. [Cf. F. collimation, fr. a false reading (collimare) for L. collineare to direct in a straight line; col + linea line. Cf. {Collineation}.] The act of collimating; the adjustment of the line of the sights, as the… …   The Collaborative International Dictionary of English

• Line of collimation — Collimation Col li*ma tion, n. [Cf. F. collimation, fr. a false reading (collimare) for L. collineare to direct in a straight line; col + linea line. Cf. {Collineation}.] The act of collimating; the adjustment of the line of the sights, as the… …   The Collaborative International Dictionary of English

• Spirit leveling — is a technique for determining differences in height between points on the Earth s surface. It works by using a spirit level, an instrument consisting of a telescope and a tube level like that used by carpenters, rigidly connected. When the… …   Wikipedia

• Levelling — For other uses, see Levelling (disambiguation). Single levelling redirects here. For other uses, see Single level (disambiguation). Levelling or leveling is a branch of surveying, the object of which is 1) To find the elevation of a given point… …   Wikipedia

• Theodolite — A theodolite (IPA en|θiːˈɒdəlаɪt) is an instrument for measuring both horizontal and vertical angles, as used in triangulation networks. It is a key tool in surveying and engineering work, particularly on inaccessible grounds, but theodolites… …   Wikipedia

• Newtonian telescope — The Newtonian telescope is a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror. Newton’s first reflecting telescope was completed in… …   Wikipedia

• Collimated light — In the lower picture, the light has been collimated. Collimated light is light whose rays are parallel, and therefore will spread slowly as it propagates. The word is related to collinear and implies light that does not disperse with distance… …   Wikipedia

• cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium

• X-ray crystallography — can locate every atom in a zeolite, an aluminosilicate with many important applications, such as water purification. X ray crystallography is a method of determining the arrangement of atoms within a crystal, in which a beam of X rays strikes a… …   Wikipedia