Sphere (disambiguation)
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Look up sphere in Wiktionary, the free dictionary. |
A sphere is an object shaped like a ball and can also be used to refer to a sphere-like region or shell.
Sphere may also refer to:
In mathematics
- Spherical surface, the boundary of a sphere (also known simply as sphere in mathematics)
- Spherical volume, the region inside a sphere (also known as a ball in mathematics)
- n-sphere, the set of points at fixed distance from a central point in n+1 dimensional space
In sociology
- Public sphere, an area where individuals can discuss social problems
In astronomy
- Celestial sphere, the astronomical description of the sky
- Armillary sphere, a physical model of the celestial sphere
- Celestial spheres or planetary spheres, refer to a geocentric model of the universe and the associated postulate of a "Musica Universalis" (Music of the Spheres)
- Hill sphere, the spherical region around an astronomical body where the primary gravitational influence on an orbiting object is that body
- Sphere of influence (astrodynamics), similar to the Hill sphere, but smaller, only about 60% of the radius
- Sphere of influence (black hole), a region around a supermassive black hole
- Spectro-Polarimetric High-Contrast Exoplanet Research (SPHERE) is an adaptive optics system and coronagraphic facility at the Very Large Telescope (VLT).
In Earth and planetary sciences
- Atmosphere
- Biosphere
- Hydrosphere
- Cryosphere (sometimes included in the hydrosphere)
- Geosphere
In stellar physics
- The layers of a star, in particular of the Sun
In geology
A type of spherical stone (Stone balls):
- Artificial stone spheres (Petrospheres)
- Lapidary spheres
- Stone Round shot (cannonballs)
- Spherical stone shot for Trebuchets
- Stone spheres of Costa Rica
- Carved Stone Balls
- Natural stone spheres
- Spherulites (Megaspherulites)
- Concretions (cannonball)
- Spheroidal weathering that creates spherical corestones
Figurative and metaphorical
- Noosphere, the sphere of human thought and/or creativity
- Sphere of influence, a metaphorical region of influence surrounding a country, person or concept
- Cultural region
Popular culture
- De sphaera mundi (The Sphere), a medieval astronomy book by Johannes de Sacrobosco
- The Sphere, a 1971 large metallic sculpture located between the twin towers of the former World Trade Center
- The Sphere (newspaper), a British weekly newspaper which ran between 1900 and 1964
- Sphere Books, a British paperback-publisher from the 1960s to the 1980s
- Sphere (novel), a 1987 book written by Michael Crichton
- Sphere (1998 film), a film based on the 1987 novel, starring Dustin Hoffman, Sharon Stone and Samuel L. Jackson
- Sphere (2013 film), an animated short film
- Spheres (TV series), a Korean animation
- SPHERE, an instrumentation project at the Very Large Telescope (VLT) to directly image extrasolar planets
- SPHERES, Synchronized Position Hold, Engage, Reorient Experimental Satellites formation flight testbed developed by MIT's Space Systems Laboratory
- Sphere (website), the blog search engine
- Dresspheres in the game Final Fantasy X-2 are used to change character classes
- Sphere, a rumored internal development name for the PlayStation Move controller
Music
- Sphere (American band), American jazz ensemble
- Sphere (Japanese band), a Japanese pop idol unit
- Sphere (Polish band), a death metal band from Poland
- Sphere3, a Progressive Rock/Jazz Fusion band
Album
- Sphere (album), a 2005 album by noise music artist Merzbow
- "Spheres" (instrumental), a 2007 single by Mike Oldfield
- Spheres (Pestilence album), 1993
- Spheres (Delerium album)
- Spheres 2, a 1994 album by Delerium
- Spheres, album by Daniel Hope
Song
- "Sphere", a song by John Frusciante and Josh Klinghoffer from their 2004 album A Sphere in the Heart of Silence
See also
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