What does time standard mean?

Definitions for time standard
time stan·dard

This dictionary definitions page includes all the possible meanings, example usage and translations of the word time standard.

Wiktionary

  1. time standardnoun

    An agreed method of measuring time; a specification or standard of either the rate at which time passes, or of points in time, or of both.

Wikidata

  1. Time standard

    A time standard is a specification for measuring time: either the rate at which time passes; or points in time; or both. In modern times, several time specifications have been officially recognized as standards, where formerly they were matters of custom and practice. An example of a kind of time standard can be a time scale, specifying a method for measuring divisions of time. A standard for civil time can specify both time intervals and time-of-day. Standardized time measurements are made using a clock to count periods of some cyclic change, which may be either the changes of a natural phenomenon or of an artificial machine. Historically, time standards were often based on the Earth's rotational period. From the late 17th century to the 19th century it was assumed that the Earth's daily rotational rate was constant. Astronomical observations of several kinds, including eclipse records, studied in the 19th century, raised suspicions that the rate at which Earth rotates is gradually slowing and also shows small-scale irregularities, and this was confirmed in the early twentieth century. Time standards based on Earth rotation were replaced for astronomical use from 1952 onwards by an ephemeris time standard based on the Earth's orbital period and in practice on the motion of the Moon. The invention in 1955 of the caesium atomic clock has led to the replacement of older and purely astronomical time standards, for most practical purposes, by newer time standards based wholly or partly on atomic time.

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Numerology

  1. Chaldean Numerology

    The numerical value of time standard in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of time standard in Pythagorean Numerology is: 2

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"time standard." Definitions.net. STANDS4 LLC, 2024. Web. 22 Dec. 2024. <https://www.definitions.net/definition/time+standard>.

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