Sphere vs Spectrum - What's the difference?
sphere | spectrum |
(mathematics) A regular three-dimensional object in which every cross-section is a circle; the figure described by the revolution of a circle about its diameter .
A spherical physical object; a globe or ball.
* Milton
* 2011 , Piers Sellers, The Guardian , 6 July:
* 1635 , John Donne, "His parting form her":
(historical, astronomy, mythology) Any of the concentric hollow transparent globes formerly believed to rotate around the Earth, and which carried the heavenly bodies; there were originally believed to be eight, and later nine and ten; friction between them was thought to cause a harmonious sound (the music of the spheres ).
*, vol.1, p.153:
* 1646 , (Thomas Browne), Pseudodoxia Epidemica , I.6:
(mythology) An area of activity for a planet; or by extension, an area of influence for a god, hero etc.
(figuratively) The region in which something or someone is active; one's province, domain.
* 1946 , (Bertrand Russell), History of Western Philosophy , I.20:
(geometry) The set of all points in three-dimensional Euclidean space (or n -dimensional space, in topology) that are a fixed distance from a fixed point .
(logic) The extension of a general conception, or the totality of the individuals or species to which it may be applied.
To place in a sphere, or among the spheres; to ensphere.
* Shakespeare
To make round or spherical; to perfect.
Specter, apparition.
A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
* {{quote-news, year=2012, date=November 7, author=Matt Bai, title=Winning a Second Term, Obama Will Confront Familiar Headwinds, work=New York Times
, passage=As Mr. Obama prepared to take the oath, his approval rating touched a remarkable 70 percent in some polling — a reflection of good will across the political spectrum .}}
Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.
* 2010 October 30, Jim Giles, Jammed!'', in '' ,
(chemistry) The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).
(mathematics, linear algebra) The set of eigenvalues of a matrix.
(mathematics, functional analysis) Of a bounded linear operator A'', the set of scalar values ? such that the operator ''A—?I'', where ''I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.
As nouns the difference between sphere and spectrum
is that sphere is a regular three-dimensional object in which every cross-section is a circle; the figure described by the revolution of a circle about its diameter while spectrum is specter, apparition.As a verb sphere
is to place in a sphere, or among the spheres; to ensphere.sphere
English
(wikipedia sphere)Alternative forms
* (archaic) * sphear (archaic)Noun
(en noun)- Of celestial bodies, first the sun, / A mighty sphere , he framed.
- So your orientation changes a little bit but it sinks in that the world is a sphere , and you're going around it, sometimes under it, sideways, or over it.
- Though cold and darkness longer hang somewhere, / Yet Phoebus equally lights all the Sphere .
- It is more simplicitie to teach our children[t]he knowledge of the starres, and the motion of the eighth spheare , before their owne.
- They understood not the motion of the eighth sphear from West to East, and so conceived the longitude of the Stars invariable.
- They thought – originally on grounds derived from religion – that each thing or person had its or his proper sphere , to overstep which is ‘unjust’.
Synonyms
* (object) ball, globe, orb * (region of activity) area, domain, field, orbit, sector * (in geometry) (''topology ) * See celestial sphere * See celestial bodyDerived terms
* blogosphere * sphere of influence * sphere of interestSee also
* ball (in topology ) *Mathworld article on the sphere*
Verb
(spher)- The glorious planet Sol / In noble eminence enthroned and sphered / Amidst the other.
- (Tennyson)
Anagrams
* * ----spectrum
English
(wikipedia spectrum)Noun
(en-noun)citation
- Current 3G technologies can send roughly 1 bit of data - a one or a zero - per second over each 1 Hz of spectrum that the operator owns.