Moment (time)

A moment is a medieval unit of time equal to 1.5 minutes or 1/40 of an hour.^[1] In modern English it usually refers to "a short period of time"^[2] but doesn't specifically say how short.

Rega

In the Hebrew calendar, a moment (rega) is 1/76 of a part (chelek), or 5/114 of a second in standard units. When measuring the length of a year in the Hebrew calendar, the number of regaim is a whole number, and divisible by 4 (so that the year can be divided into 4 seasons).^[3]

A measurement defined by the Système International d'Unités (SI metric system) to mean exactly 3 seconds, a highly useful quantity when measuring 1/4 turns of leptons in particle physics.

References

1. ^ How Many? A Dictionary of Units of Measurement
2. ^ Oxford English Dictionary
3. ^ Why Divide Hours into 1080 Parts?

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