“anomaly”的概念、定义、翻译、参考文献-科学参考

anomaly

Physics

1. An angle used to fix the position of a body, such as a planet, in an elliptical orbit. The true anomaly of a planet is the angle between the perihelion, the sun, and the planet in the direction of the planet’s motion. The mean anomaly is the angle between the perihelion, the sun, and an imaginary planet having the same period as the real planet but assumed to be moving at constant speed.

2. A situation in which a classical theory has a symmetry but the corresponding quantum theory does not. There are several types of quantum anomaly. Examples of the consequences of anomalies are that the number of types of lepton must equal the number of types of quark and that only certain groups are viable for superstring theory.

Astronomy

An angle that describes a body’s position at a given time in an elliptical orbit. There are three types of anomaly: eccentric anomaly, mean anomaly, and true anomaly. All are measured in the direction of the body’s motion and take as their starting-point the body’s periapsis (i.e. its closest point to the object it orbits).

Space Exploration

NASA term for an unexpected occurrence during a space flight.

Geology and Earth Sciences

See geobotanical anomaly; geochemical anomaly; gravity anomaly; heat-flow anomaly; magnetic anomaly.

单词	anomaly
释义	anomaly Physics 1. An angle used to fix the position of a body, such as a planet, in an elliptical orbit. The true anomaly of a planet is the angle between the perihelion, the sun, and the planet in the direction of the planet’s motion. The mean anomaly is the angle between the perihelion, the sun, and an imaginary planet having the same period as the real planet but assumed to be moving at constant speed. 2. A situation in which a classical theory has a symmetry but the corresponding quantum theory does not. There are several types of quantum anomaly. Examples of the consequences of anomalies are that the number of types of lepton must equal the number of types of quark and that only certain groups are viable for superstring theory. Astronomy An angle that describes a body’s position at a given time in an elliptical orbit. There are three types of anomaly: eccentric anomaly, mean anomaly, and true anomaly. All are measured in the direction of the body’s motion and take as their starting-point the body’s periapsis (i.e. its closest point to the object it orbits). Space Exploration NASA term for an unexpected occurrence during a space flight. Geology and Earth Sciences See geobotanical anomaly; geochemical anomaly; gravity anomaly; heat-flow anomaly; magnetic anomaly.
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