time coordinate
51Equatorial coordinate system — The equatorial coordinate system is probably the most widely used celestial coordinate system, whose equatorial coordinates are: * declination (delta) * right ascension (alpha) also RA , or hour angle (H) also HA It is the most closely related to …
52Philosophy of space and time — is the branch of philosophy concerned with the issues surrounding the ontology, epistemology, and character of space and time. While such ideas have been central to philosophy from its inception, the philosophy of space and time was both an… …
53International Atomic Time — ( [http://www.bipm.org/en/scientific/tai/tai.html TAI] , from the French name Temps Atomique International) is a high precision atomic time standard that tracks proper time on Earth s geoid. It is the principal realisation of Terrestrial Time,… …
54Collaborative real-time editor — RTCE redirects here. For other uses, see RTCE (disambiguation). A collaborative editor is a form of collaborative software application that allows several people to edit a computer file using different computers. There are two types of… …
55space-time continuum — noun the four dimensional coordinate system (3 dimensions of space and 1 of time) in which physical events are located • Syn: ↑space time • Hypernyms: ↑coordinate system, ↑frame of reference, ↑reference system, ↑reference frame * * * noun …
56space-time — noun the four dimensional coordinate system (3 dimensions of space and 1 of time) in which physical events are located • Syn: ↑space time continuum • Hypernyms: ↑coordinate system, ↑frame of reference, ↑reference system, ↑reference frame …
57Universal Time — (UT) is a timescale based on the rotation of the Earth. It is a modern continuation of Greenwich Mean Time (GMT), i.e., the mean solar time on the meridian of Greenwich, and GMT is sometimes used loosely as a synonym for UTC. In fact the… …
58Deep time — For other uses, see Deep time (disambiguation). Deep time is the concept that the Geologic time scale is vast because the Earth is very old. The modern philosophical concept was developed in the 18th century by Scottish geologist James Hutton… …
59Absolute time and space — See also: Absolute rotation, Bucket argument, Rotating spheres, and Inertial frame of reference Originally introduced by Sir Isaac Newton in the Philosophiæ Naturalis Principia Mathematica, the concepts of absolute time and space provided a… …
60Decimal time — French decimal clock from the time of the French Revolution Decimal time is the representation of the time of day using units which are decimally related. This term is often used to refer specifically to French Revolutionary Time, which divides… …
