spectrum

suomi-englanti sanakirja

spectrum englannista suomeksi

A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
{{quote-journal|en|date=November 7, 2012|author=Matt Bai|title=Winning a Second Term, Obama Will Confront Familiar Headwinds|work=New York Times|url=http://www.nytimes.com/2012/11/07/us/politics/in-president-obamas-second-term-familiar-challenges.html?pagewanted=all&_r=0
Specifically, a range of colours representing light (radiation) of contiguous frequencies; hence spectrum, spectrum, ultraviolet spectrum, etc. (defdate)
{{quote-journal|en|date=October 30 2010|author=Jim Giles|title=Jammed!|journal=New Scientist
The spectrum.
(quote-book)
(''chemistry'') The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).
The set of eigenvalues of a matrix.

(syn)

Of a bounded operator ''A'', the set of scalar values λ such that the operator ''A—λI'', where ''I'' denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.
An abstract object in mathematics created from a ring R and denoted \operatorname{Spec}(R) or \operatorname{Spec} R and said to be the ''spectrum of R''; useful in the study of such rings for providing a geometric object which encodes many of the properties R, and in modern geometry for generalizing the notion of an variety to that of an scheme. Formally, the set of all ideals R equipped with the topology and augmented with a sheaf of rings called the sheaf, generated by the B-sheaf on the open sets D_f which assigns the localization of R at f to each set D_f, regarded as a ring of functions on D_f. See (pedia)

(hyponyms) (hypernyms)