Sphere Wiki - What is the sphere?
A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk"). Like a circle in a two-dimensional space, a sphere is defined mathematically as the set of points that are all at the same distance r from a given point, but in a three-dimensional space. This distance r is the radius of the ball, which is made up from all points with a distance less than r from the given point, which is the center of the mathematical ball. These are also referred to as the radius and center of the sphere, respectively. The longest straight line through the ball, connecting two points of the sphere, passes through the center and its length is thus twice the radius; it is a diameter of both the sphere and its ball. While outside mathematics the terms "sphere" and "ball" are sometimes used interchangeably, in mathematics the above distinction is made between a sphere, which is a two-dimensional closed surface, embedded in a three-dimensional Euclidean space, and a ball, which is a three-dimensional shape that includes the sphere and everything inside the sphere (a closed ball), or, more often, just the points inside, but not on the sphere (an open ball). This distinction has not always been maintained and especially older mathematical references talk about a sphere as a solid. This is analogous to the situation in the plane, where the terms "circle" and "disk" can also be confounded..
What does the word sphere mean? Find synonyms, antonyms and the meaning of the word sphere in our free online dictionary! Find words starting with sphere and anagrams of sphere.
Definitions of "sphere"
- Mathematics A three-dimensional surface, all points of which are equidistant from a fixed point. noun
- A spherical object or figure. noun
- A celestial body, such as a planet or star. noun
- The sky, appearing as a hemisphere to an observer: the sphere of the heavens. noun
- Any of a series of concentric, transparent, revolving globes that together were once thought to contain the moon, sun, planets, and stars. noun
- The extent of a person's knowledge, interests, or social position. noun
- An area of power, control, or influence; domain. See Synonyms at field. noun
- To form into a sphere. verb-transitive
- To put in or within a sphere. verb-transitive
- To surround or encompass. verb-transitive
- To place in a sphere, or among the spheres; to ensphere. verb
- To make round or spherical; to perfect. verb
- A body or space contained under a single surface, which in every part is equally distant from a point within called its center. noun
- Hence, any globe or globular body, especially a celestial one, as the sun, a planet, or the earth. noun
- The apparent surface of the heavens, which is assumed to be spherical and everywhere equally distant, in which the heavenly bodies appear to have their places, and on which the various astronomical circles, as of right ascension and declination, the equator, ecliptic, etc., are conceived to be drawn; an ideal geometrical sphere, with the astronomical and geographical circles in their proper positions on it. noun
- In ancient astronomy, one of the concentric and eccentric revolving spherical transparent shells in which the stars, sun, planets, and moon were supposed to be set, and by which they were carried, in such a manner as to produce their apparent motions. noun
- The extension of a general conception, or the totality of the individuals or species to which it may be applied. noun
- Circuit or range of action, knowledge, or influence; compass; province; employment; place of existence. noun
The word "sphere" in example sentences
See additional notes, No. VI.] [_Or sphere on sphere_. l.. [The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation]
Must I be comforted, not in his sphere] I cannot be united with him and move in the same _sphere_, but _must be comforted_ at a distance by the _radiance_ that shoots _on all sides_ from him.. [Notes to Shakespeare — Volume 01: Comedies]
Other sphere is around our personal presentation of self.. [Web Teacher › SXSW: Is Privacy Dead or Just Very Confused?]
In many ways a sphere is the simplest shape an object can take.. [A brief sidebar about design and evolution]
The World Bank chief Paul Wolfowitz fighting back against what he calls a sphere campaign with help from President Bush.. [CNN Transcript Apr 30, 2007]
What is, however, urgently necessary in this sphere is a marked increase in the security capabilities on the European side.. [Translantic Relations and Security Policy: Common Interests, Values and History]
It teaches us more than this: that, as man has smaller language than woman, his sphere is the domestic; is the quiet, the silent, the unobtrusive; is one of silent influences, not public and demonstrative like that of woman.. [Man's Rights: or, How Would You Like It?]
And, for her own happiness, all the more because her sphere is at home, her home stores should be exhaustless – the stores she cannot go abroad to seek.. [Queechy]
"Perhaps never," said Lilian, endeavoring, not very successfully, to steady her voice and speak with _nonchalance_, "unless you are willing to leave what you call your sphere and seek me in mine.". [Evenings at Donaldson Manor Or, The Christmas Guest]
Whether or not the information was in the public sphere is irrelevant.. [Matthew Yglesias » The War on Chas Freeman]
"This sphere is made of sangre-de-indio (Indian Blood) obsidian, said Eleno and these pieces, well, you have to take them into the sun to appreciate their colors.". [Obsidian in Mexico: gift of the gods]
FROM MTV. COM: Success in one entertainment sphere is not always an indication of success in another, a fact that could not be more true when it comes to hosting an awards show.. [Ricky Gervais Hosting The Golden Globes: How Did It Happen? » MTV Movies Blog]
Because the military sphere is alien to most civilians, you have to make more adjustments for readability than you would if you were writing a story about a cop or a teacher.. [Superhero Nation: how to write superhero novels and comic books » Common Superhero Day Jobs, Part 2]
The separation of men and women in the public sphere is considered the very foundation of Pashtun tribal life and pashtunwali, along with the duty to protect guests and those who seek sanctuary.. [Scott Atran: Talking to the Enemy: How to Turn the Taliban Against Al Qaeda]
Your contribution to the modern stuff-o-sphere is either 0 or positive.. [Sorry about the hiatus… « Geek Related]
Xenophobic and racist rhetoric in the political sphere is sadly not a new phenomenon in this country and frequently re-emerges with vigor in election cycles.. [Deepa Iyer: Macacas and Turban Toppers: Xenophobic Rhetoric and the 2010 Elections]
Sphere TranslatesSphere English to Turkish Translate
i., f. küre; gök, sema; dünya; saha, alan; sınıf, derece; f. küreler arasına koymak; küre şeklini vermek.i., f. küre; gök, sema; dünya; saha, alan; sınıf, derece; f. küreler arasına koymak; küre şeklini vermek.