Coordinate Time

Coordinate Time

In the theory of relativity, it is convenient to express results in terms of a spacetime coordinate system relative to an implied observer. In many (but not all) coordinate systems, an event is specified by one time coordinate and three spatial coordinates. The time specified by the time coordinate is referred to as coordinate time to distinguish it from proper time.

In the special case of an inertial observer in special relativity, by convention the coordinate time at an event is the same as the proper time measured by a clock that is at the same location as the event, that is stationary relative to the observer and that has been synchronised to the observer's clock using the Einstein synchronisation convention.

Read more about Coordinate TimeCoordinate Time, Proper Time, and Clock Synchronization, Mathematics, Measurement, Coordinate Time Scales

Other articles related to "coordinate time, time":

Geodesic (general Relativity) - Coordinate Time
... So far the geodesic equation of motion has been written in terms of proper time, s ... It can also be written in terms of the time coordinate ...
Thermal Time Scale - Stellar Astrophysics
... Indeed, the thermal time scale assumes that there is no fuel at all inside the star and simply predicts the length of time it would take for the resulting change in ... As an example, the Sun's thermal time scale is approximately 30 million years ... Time measurement and standards Major subjects Time Chronometry Orders of magnitude Metrology International standards UTC UTC offset UT ΔT DUT1 IERS ISO 31-1 ISO 8601 TAI 12-hour clock 24-hour clock ...
Coordinate Time Scales
... A coordinate time scale (or coordinate time standard) is a time standard designed for use as the time coordinate in calculations that need to take account of relativistic effects ... The choice of a time coordinate implies the choice of an entire frame of reference ... As described above, a time coordinate can to a limited extent be illustrated by the proper time of a clock that is notionally infinitely far away from the objects of interest ...
Relativistic Dynamics - Invariant Evolution Parameter Concept - Hypothesis II
... Introduce two temporal variables A coordinate time in the sense of Einstein An invariant evolution parameter in the sense of Newton Hypothesis I led to a relativistic ... Time in the relativistic probability conservation equation is Einstein’s time and is a consequence of implicitly adopting Hypothesis I ... the second law of thermodynamics establishes an “arrow of time” for evolving systems, including relativistic systems ...
Time (metadata) - See Also
... metadata ISO/IEC 11179 Representation term ISO 8601 Time measurement and standards Major subjects Time Chronometry Orders of magnitude Metrology International standards UTC UTC offset UT ΔT ...

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