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  2. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    10 nanoseconds, also a casual term for a short period of time. microsecond: 10 −6 s: One millionth of a second. Symbol is μs millisecond: 10 −3 s: One thousandth of a second. Shortest time unit used on stopwatches. jiffy (electronics) ~ 10 −3 s: Used to measure the time between alternating power cycles. Also a casual term for a short ...

  3. List of time periods - Wikipedia

    en.wikipedia.org/wiki/List_of_time_periods

    The categorisation of the past into discrete, quantified named blocks of time is called periodization. [1] This is a list of such named time periods as defined in various fields of study. These can be divided broadly into prehistorical periods and historical periods (when written records began to be kept).

  4. Working timetable - Wikipedia

    en.wikipedia.org/wiki/Working_timetable

    A working timetable (WTT) - (Fr. horaire de service (HDS) or service annuel (SA); N. America Employee timetable) - The data defining all planned train and rolling-stock movements which will take place on the relevant infrastructure during the period for which it is in force; within the EU, it is established once per calendar year. [1]

  5. Hindu units of time - Wikipedia

    en.wikipedia.org/wiki/Hindu_units_of_time

    Each Manu reigns over a period called a manvantara, each lasting for 71 chatur-yugas (306.72 million years). A total of 14 Manus reign successively in one kalpa (day of Brahma). Preceding the first and following each manvantara is a sandhyā (connection period), each lasting the duration of Satya-yuga (1.728 million years).

  6. Jiffy (time) - Wikipedia

    en.wikipedia.org/wiki/Jiffy_(time)

    The term jiffy is sometimes used in computer animation as a method of defining playback rate, with the delay interval between individual frames specified in 1/100 of a second (10 ms) jiffies, particularly in Autodesk Animator.FLI sequences (one global frame frequency setting) and animated Compuserve.GIF images (each frame having an individually ...

  7. Geologic time scale - Wikipedia

    en.wikipedia.org/wiki/Geologic_time_scale

    The following table summarises the major events and characteristics of the divisions making up the geologic time scale of Earth. This table is arranged with the most recent geologic periods at the top, and the oldest at the bottom. The height of each table entry does not correspond to the duration of each subdivision of time.

  8. School timetable - Wikipedia

    en.wikipedia.org/wiki/School_timetable

    Sometimes there are 2 or 3 subjects which rotate between student bodies throughout the year. For example, the 8A students [10] might take Art in the first half of the year and Music in the second half. Off-timetable lessons: [11] sometimes an occasional lesson is scheduled "off the timetable" meaning before school, after school, or during lunch ...

  9. Period (school) - Wikipedia

    en.wikipedia.org/wiki/Period_(school)

    Lunch periods in high school could be up to 240 minutes long. [citation needed] A free period in a college is a time period that a student is not enrolled in a class. During the free period, students are completely free of adult supervision and could do whatever they want that complies to the campus rules and the law.