complex unit
41Unit sphere — some unit spheres In mathematics, a unit sphere is the set of points of distance 1 from a fixed central point, where a generalized concept of distance may be used; a closed unit ball is the set of points of distance less than or equal to 1 from a …
42Unit circle — In mathematics, a unit circle is a circle with a unit radius, i.e., a circle whose radius is 1. Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in… …
43Complex squaring map — In mathematics, the complex squaring map, a polynomial mapping of degree two, is a simple and accessible demonstration of chaos in dynamical systems. It can be constructed by performing the following steps: Choose any complex number on the unit… …
44Unit record equipment — Before the advent of electronic computers, data processing was performed using electromechanical devices called unit record equipment, electric accounting machines (EAM) or tabulating machines. Unit record machines were as ubiquitous in industry… …
45Unit disk graph — In geometric graph theory, a unit disk graph is the intersection graph of a family of unit circles in the Euclidean plane. That is, we form a vertex for each circle, and connect two vertices by an edge whenever the corresponding circles cross… …
46Unit Citation for Gallantry — Infobox Military Award name=Unit Citation for Gallantry caption=insignia worn if a member of the unit when earned (left) and if joined after (right) awarded by=Australia type= Unit Citation eligibility= Australian military units for=… …
47Complex beam parameter — In optics, the complex beam parameter is a complex number that specifies the properties of a Gaussian beam at a particular point z along the axis of the beam. It is usually denoted by q. It can be calculated from the beam s vacuum wavelength λ0,… …
48Complex fraction — Fraction Frac tion, n. [F. fraction, L. fractio a breaking, fr. frangere, fractum, to break. See {Break}.] 1. The act of breaking, or state of being broken, especially by violence. [Obs.] [1913 Webster] Neither can the natural body of Christ be… …
49unit — I. noun Etymology: back formation from unity Date: 1570 1. a. the first and least natural number ; one b. a single quantity regarded as a whole in calculation 2. a determinate quantity (as of length, time, heat, or value) adopted as a standard of …
50Unit Control Block — In IBM mainframe operating systems from the z/OS line, a Unit Control Block (UCB) is a memory structure, or a control block , that describes any single input/output peripheral device, or a unit , to the operating system.A similar concept in Unix… …
