quinta-feira, 4 de fevereiro de 2016

"Reference frame" ou "frame of reference"

"Reference frame, also called frame of reference , in dynamics, system of graduated lines symbolically attached to a body that serve to describe the position of points relative to the body. The position of a point on the surface of the Earth, for example, can be described by degrees of latitude, measured north and south from the Equator, and degrees of longitude, measured east and west from the great circle passing through Greenwich, England, and the poles. (...)"

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