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单词 string theory
释义

string theory


string theory

n. A theory in physics in which tiny stringlike objects have modes of vibration that correspond to elementary particles. Such objects exist in a spacetime that has more dimensions than the familiar three dimensions of space, some of which are thought to be exceedingly small. String theory seeks to unify gravity with quantum theory.

string theory

(strĭng) A theory in physics that views subatomic particles as string-like objects floating in space-time rather than as point-like objects. Space-time in string theory can have up to nine dimensions of space, plus the dimension of time.
Thesaurus
Noun1.string theory - (particle physics) a theory that postulates that subatomic particles are one-dimensional stringsframework, model, theoretical account - a hypothetical description of a complex entity or process; "the computer program was based on a model of the circulatory and respiratory systems"M-theory - (particle physics) a theory that involves an eleven-dimensional universe in which the weak and strong forces and gravity are unified and to which all the string theories belonghigh energy physics, high-energy physics, particle physics - the branch of physics that studies subatomic particles and their interactions
Translations

string theory


string theory,

description of elementary particleselementary particles,
the most basic physical constituents of the universe. Basic Constituents of Matter

Molecules are built up from the atom, which is the basic unit of any chemical element. The atom in turn is made from the proton, neutron, and electron.
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 based on one-dimensional curves, or "strings," instead of point particles. Superstring theory, which is string theory that contains a kind of symmetry known as supersymmetrysupersymmetry,
in physics, theory concerning the relationship of the elementary particles called boson to those known as fermions, and vice versa, and linking the four fundamental forces.
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, has been seen by some physicists as a way of unifying the four known fundamental forces of nature, but a lack of evidence for supersymmetric particles, especially in the experiments conducted by the Large Hadron Collider, has called supersymmetry into question. The strings are embedded in a space-timespace-time,
central concept in the theory of relativity that replaces the earlier concepts of space and time as separate absolute entities. In relativity one cannot uniquely distinguish space and time as elements in descriptions of events.
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 having as many as 10 dimensions—the three ordinary dimensions plus time and seven compactified dimensions. The energy-scale at which the stringlike properties would become evident is so high that it is currently unclear how any of the forms of the theory could be tested.

Bibliography

See P. C. W. Davies and J. Brown, ed., Superstrings (1988); L. Smolin, The Trouble with Physics (2006).

string theory

A theory of elementary particles based on the idea that the fundamental entities are not pointlike particles but finite lines, known as strings, or closed loops formed by strings (see also cosmic strings). Incorporating the concept of strings into supersymmetry has led to superstring theory, in which all the fundamental forces are unified at the Planck time using a multidimensional framework called a superstring; this is still a highly speculative theory.

string theory

The belief that all physical matter is made up of vibrating elements called "strings." Officially known as "superstring theory," it differs from traditional physics, in which all matter is made up of ball-like particles.

string theory


Related to string theory: theory of relativity, Stephen Hawking, M Theory
  • noun

Words related to string theory

noun (particle physics) a theory that postulates that subatomic particles are one-dimensional strings

Related Words

  • framework
  • model
  • theoretical account
  • M-theory
  • high energy physics
  • high-energy physics
  • particle physics
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更新时间:2024/11/14 18:04:29