“frame of reference”的概念、定义、习题解题方法及翻译-数学辞典

单词

frame of reference

释义

frame of reference

In mechanics, a means by which an observer specifies position and time to describe events and the motion of bodies around them. In some circumstances, it may be useful to consider two or more different frames of reference, each with its own observer. One frame of reference, its origin and axes, may be moving relative to another.

A frame of reference in which Newton's laws of motion hold is called an inertial frame (of reference). Any frame of reference that is at rest or moving with constant velocity relative to an inertial frame is an inertial frame. A frame of reference that is accelerating or rotating with respect to an inertial frame is not an inertial frame.

A frame of reference fixed on the Earth is not an inertial frame because of the rotation of the Earth. However, such a frame of reference may be assumed to be an inertial frame in problems where the rotation of the Earth has little effect. See fictitious force, Galilean relativity, special relativity.

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