Definition of Planat. Meaning of Planat. Synonyms of Planat

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Definition of Planat

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Aplanatic focus
Focus Fo"cus, n.; pl. E. Focuses, L. Foci. [L. focus hearth, fireplace; perh. akin to E. bake. Cf. Curfew, Fuel, Fusil the firearm.] 1. (Opt.) A point in which the rays of light meet, after being reflected or refrcted, and at which the image is formed; as, the focus of a lens or mirror. 2. (Geom.) A point so related to a conic section and certain straight line called the directrix that the ratio of the distace between any point of the curve and the focus to the distance of the same point from the directrix is constant. Note: Thus, in the ellipse FGHKLM, A is the focus and CD the directrix, when the ratios FA:FE, GA:GD, MA:MC, etc., are all equal. So in the hyperbola, A is the focus and CD the directrix when the ratio HA:HK is constant for all points of the curve; and in the parabola, A is the focus and CD the directrix when the ratio BA:BC is constant. In the ellipse this ratio is less than unity, in the parabola equal to unity, and in the hyperbola greater than unity. The ellipse and hyperbola have each two foci, and two corresponding directrixes, and the parabola has one focus and one directrix. In the ellipse the sum of the two lines from any point of the curve to the two foci is constant; that is: AG+GB=AH+HB; and in the hyperbola the difference of the corresponding lines is constant. The diameter which passes through the foci of the ellipse is the major axis. The diameter which being produced passes through the foci of the hyperbola is the transverse axis. The middle point of the major or the transverse axis is the center of the curve. Certain other curves, as the lemniscate and the Cartesian ovals, have points called foci, possessing properties similar to those of the foci of conic sections. In an ellipse, rays of light coming from one focus, and reflected from the curve, proceed in lines directed toward the other; in an hyperbola, in lines directed from the other; in a parabola, rays from the focus, after reflection at the curve, proceed in lines parallel to the axis. Thus rays from A in the ellipse are reflected to B; rays from A in the hyperbola are reflected toward L and M away from B. 3. A central point; a point of concentration. Aplanatic focus. (Opt.) See under Aplanatic. Conjugate focus (Opt.), the focus for rays which have a sensible divergence, as from a near object; -- so called because the positions of the object and its image are interchangeable. Focus tube (Phys.), a vacuum tube for R[oe]ntgen rays in which the cathode rays are focused upon the anticathode, for intensifying the effect. Principal, or Solar, focus (Opt.), the focus for parallel rays.
Aplanatism
Aplanatism A*plan"a*tism, n. Freedom from spherical aberration.
Complanate
Complanate Com"pla*nate (? or ?), a. [L. complanatus, p. p. of complanare to make plane. See Plane, v. t.] Flattened to a level surface. [R.]
Complanate
Complanate Com"pla*nate, v. t. To make level. [R.]
Deplanate
Deplanate De*pla"nate, a. [L. deplanetus, p. p. of deplanare to make level. See Plane, v. t.] (Bot.) Flattened; made level or even.
Explanate
Explanate Ex"pla*nate, a. [L. explanatus, p. p. of explanare. See Explain.] (Bot. & Zo["o]l.) Spreading or extending outwardly in a flat form.
Explanation
Explanation Ex`pla*na"tion, n. [L. explanatio: cf. OF. esplanation.] 1. The act of explaining, expounding, or interpreting; the act of clearing from obscurity and making intelligible; as, the explanation of a passage in Scripture, or of a contract or treaty. 2. That which explains or makes clear; as, a satisfactory explanation. 3. The meaning attributed to anything by one who explains it; definition; interpretation; sense. Different explanations [of the Trinity]. --Bp. Burnet. 4. A mutual exposition of terms, meaning, or motives, with a view to adjust a misunderstanding, and reconcile differences; reconciliation; agreement; as, to come to an explanation. Syn: Definition; description; explication; exposition; interpretation; detail. See Definition.
Explanative
Explanative Ex*plan"a*tive, a. Explanatory.
Explanatoriness
Explanatoriness Ex*plan"a*to*ri*ness, n. The quality of being explanatory.
Explanatory
Explanatory Ex*plan"a*to*ry, a. [L. explanatorius.] Serving to explain; containing explanation; as explanatory notes. --Swift.
Misexplanation
Misexplanation Mis*ex`pla*na"tion, n. An erroneous explanation.

Meaning of Planat from wikipedia

- Napoleon watches the French s****line recede. His retinue, from left to right Planat, Montholon, Maingault [fr], Las Cases, Savary, Lallemand and Bertrand, look...
- 1016/0898-6568(94)90062-0. PMID 8011430. Valet P, Senard JM, Devedjian JC, Planat V, Salomon R, Voisin T, et al. (May 1993). "Characterization and distribution...
- A. Deniaud (1911–1917) A. Leblanc (1917–1924) L.C. Renoux(1925 - ) P.M. Planat (1925–1931) H. Gaston (1937–1945) L. Peyroutet (1945–1947) A. Olasail (1947–1953)...
- Girl from Ariccia and the portrait of his Parisian patron Nicolas-Louis Planat de la Faye that is in the Louvre. After the fall of the Second Empire, both...
- Berzolari (in Italian). Istituto matematico della R. Università. Saniga, Metod; Planat, Michel; Kibler, Maurice R.; Pracna, Petr (2007), "A classification of the...
- LUCRURI MISTERIOASE din viața lui Dinu Patriciu. Acuzația de CRIMĂ care a planat asupra MOGULULUI, în 1992". Evenimentul Zilei. 25 August 2014. Retrieved...
- 3241–3245. Bibcode:1981JPhA...14.3241I. doi:10.1088/0305-4470/14/12/019. M. Planat et al, A Survey of Finite Algebraic Geometrical Structures Underlying Mutually...
- http://www.quanterra.org/guide/guide1_18.htm The 1991 catastrophic failure events http://www.planat.ch/en/images-details/datum/2011/06/21/bergsturz-randa-1991/...
- Oxford University Press. p. 129. ISBN 978-0-19-850295-1. Saniga, Metod; Planat, Michel; Kibler, Maurice R.; Pracna, Petr (2007), "A classification of the...
- 1778 -1870,’ L'Encyclopédie de L'Architecture et de la Construction, P. Planat (ed.), Vol.6 (Paris: Aulanier, 1894) Casey, Christine. Dublin: The City...