elliptical function
1Elliptical — Elliptic El*lip tic, Elliptical El*lip tic*al, a. [Gr. ?: cf. F. elliptique. See {Ellipsis}.] 1. Of or pertaining to an ellipse; having the form of an ellipse; oblong, with rounded ends. [1913 Webster] The planets move in elliptic orbits. Cheyne …
2Elliptic function — Elliptic El*lip tic, Elliptical El*lip tic*al, a. [Gr. ?: cf. F. elliptique. See {Ellipsis}.] 1. Of or pertaining to an ellipse; having the form of an ellipse; oblong, with rounded ends. [1913 Webster] The planets move in elliptic orbits. Cheyne …
3Dwarf elliptical galaxy — Dwarf elliptical galaxies, or dEs, are elliptical galaxies that are much smaller than others. They are classified as dE, and are quite common in galaxy groups and clusters, and are usually companions to other galaxies. Contents 1 Examples 2… …
4Dirac delta function — Schematic representation of the Dirac delta function by a line surmounted by an arrow. The height of the arrow is usually used to specify the value of any multiplicative constant, which will give the area under the function. The other convention… …
5Mathieu function — In mathematics, the Mathieu functions are certain special functions useful for treating a variety of problems in applied mathematics, including vibrating elliptical drumheads, quadrupoles mass filters and quadrupole ion traps for mass… …
6Planetary nebula luminosity function — (PNLF) is a secondary distance indicator used in astronomy. It makes use of the [O III| [O III] λ5007 forbidden line found in all planetary nebula which are members of the old stellar populations (Population… …
7special function — ▪ mathematics any of a class of mathematical functions (function) that arise in the solution of various classical problems of physics. These problems generally involve the flow of electromagnetic, acoustic, or thermal energy. Different… …
8Bidirectional reflectance distribution function — The bidirectional reflectance distribution function (BRDF; {f r(omega i , omega o) }) is a 4 dimensional function that defines how light is reflected at an opaque surface. The function takes an incoming light direction, omega i , and outgoing… …
9Ellipse — Elliptical redirects here. For the exercise machine, see Elliptical trainer. This article is about the geometric figure. For other uses, see Ellipse (disambiguation). Not to be confused with ellipsis. An ellipse obtained as the intersection of a… …
10Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… …
