IEVref: | 113-01-11 | ID: | |

Language: | en | Status: Proof | |

Term: | timescale | ||

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Synonym3: | |||

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Definition: | system of ordered marks attributed to instants on the time axis, one instant being chosen as the origin
Note 1 to entry: A timescale can be chosen as: - continuous, e.g. international atomic time (TAI),
- continuous with discontinuities, e.g. coordinated universal time (UTC), owing to leap seconds, and standard time, owing to summer time and winter time,
- successive steps, e.g. usual calendars, where the time axis is split up into a succession of consecutive time intervals and the same mark is attributed to all instants of each time interval; the time intervals need not all have the same duration,
- discrete, e.g. in digital techniques.
Note 2 to entry: For physical and technical applications, a timescale with quantitative marks is preferred, based on a chosen initial instant together with a unit of measurement. Note 3 to entry: Customary timescales use various units of measurement in combination, such as second, minute, and hour, or various time intervals of the calendar, such as calendar day, calendar month, and calendar year. | ||

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Replaces: | 113-01-11:2011-04 | ||

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VT remarks: | |||

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Domain5: |

Note 1 to entry: A timescale can be chosen as:

- continuous, e.g. international atomic time (TAI),
- continuous with discontinuities, e.g. coordinated universal time (UTC), owing to leap seconds, and standard time, owing to summer time and winter time,
- successive steps, e.g. usual calendars, where the time axis is split up into a succession of consecutive time intervals and the same mark is attributed to all instants of each time interval; the time intervals need not all have the same duration,
- discrete, e.g. in digital techniques.

Note 2 to entry: For physical and technical applications, a timescale with quantitative marks is preferred, based on a chosen initial instant together with a unit of measurement.

Note 3 to entry: Customary timescales use various units of measurement in combination, such as second, minute, and hour, or various time intervals of the calendar, such as calendar day, calendar month, and calendar year.