the semi-major axis

См. также в других словарях:

• Semi-major axis — The semi major axis of an ellipse The major axis of an ellipse is its longest diameter, a line that runs through the centre and both foci, its ends being at the widest points of the shape. The semi major axis is one half of the major axis, and… …   Wikipedia

• Semi-minor axis — The semi minor axis of an ellipse In geometry, the semi minor axis (also semiminor axis) is a line segment associated with most conic sections (that is, with ellipses and hyperbolas). One end of the segment is the center of the conic section, and …   Wikipedia

• Proofs involving the ellipse — The derivation of the cartesian form for an ellipse is simple and instructive. One simple definition of the ellipse is the locus of all points of the plane whose distances to two fixed points(called the foci) add to the same constant . See… …   Wikipedia

• Equation of the center — The equation of the center, in astronomy and elliptical motion, is equal to the true anomaly minus the mean anomaly, i.e. the difference between the actual angular position in the elliptical orbit and the position the orbiting body would have if… …   Wikipedia

• Transverse axis — refers to an axis which is (side to side, relative to some defined forward direction). In particular:* Transverse axis (aircraft) * For a hyperbola the transverse axis is in the same direction as the semi major axis …   Wikipedia

• semi-ellipse — semi ellipseˈ noun Half of an ellipse, bounded by a diameter, esp the major axis • • • Main Entry: ↑semi …   Useful english dictionary

• The Protocols of the Elders of Zion — ( Protocols of the wise men of Zion , Library of Congress s Uniform Title; ru. Протоколы сионских мудрецов , or Сионские протоколы ; see also other titles) is an antisemitic tract alleging a Jewish and Masonic plot to achieve world domination. It …   Wikipedia

• Error of the mean square — Mean Mean, a. [OE. mene, OF. meiien, F. moyen, fr. L. medianus that is in the middle, fr. medius; akin to E. mid. See {Mid}.] 1. Occupying a middle position; middle; being about midway between extremes. [1913 Webster] Being of middle age and a… …   The Collaborative International Dictionary of English

• The Holocaust — Holocaust and Shoah redirect here. For other uses, see Holocaust (disambiguation) and Shoah (disambiguation). Selection on …   Wikipedia

• Major depressive disorder — For other depressive disorders, see Mood disorder. Major Depressive Disorder Classification and external resources …   Wikipedia

• Secular variations of the planetary orbits — The Secular Variations of the Planetary Orbits (French: Variations Séculaires des Orbites Planétaires, abbreviated as VSOP) is a semi analytic theory describing the long term changes (secular variation) in the orbits of the planets Mercury to… …   Wikipedia