Proper Frame of Reference
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
Proper Frame of Reference
The proper frame of reference of a body is the reference frame associated with the body—that is, the reference frame in which the body is at rest. Since a body may move with acceleration, including rotation, the proper frame of reference is, in the general case, noninertial. For example, the proper frame of reference of an unstabilized artificial earth satellite is represented by an imaginary coordinate system that is rigidly attached to the satellite and flies and tumbles with it and by a clock that is fixed to the satellite and registers time.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.