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  2. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    One quadrillionth of a second. Pulse time on fastest lasers. svedberg: 10 −13 s: Time unit used for sedimentation rates (usually of proteins). picosecond: 10 −12 s: One trillionth of a second. nanosecond: 10 −9 s: One billionth of a second. Time for molecules to fluoresce. shake: 10 −8 s: 10 nanoseconds, also a casual term for a short ...

  3. Hour - Wikipedia

    en.wikipedia.org/wiki/Hour

    Its hours are a secondary unit computed as precisely 3,600 seconds. [23] However, an hour of Coordinated Universal Time (UTC), used as the basis of most civil time, has lasted 3,601 seconds 27 times since 1972 in order to keep it within 0.9 seconds of universal time, which is based on measurements of the mean solar day at 0° longitude.

  4. Decimal time - Wikipedia

    en.wikipedia.org/wiki/Decimal_time

    On 23 October 1998, the Swiss watch company Swatch introduced a decimal time called Internet Time for its line of digital watches, which divided the day into 1,000 ".beats", (each 86.4 seconds in standard time) counted from 000–999, with @000 being midnight and @500 being noon standard time in Switzerland, which is Central European Time (one ...

  5. Second - Wikipedia

    en.wikipedia.org/wiki/Second

    The second (symbol: s) is a unit of time, historically defined as 1 ⁄ 86400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400).

  6. Hexadecimal time - Wikipedia

    en.wikipedia.org/wiki/Hexadecimal_time

    Hexadecimal time is the representation of the time of day as a hexadecimal number in the interval [0, 1). The day is divided into 10 16 (16 10 ) hexadecimal hours, each hour into 100 16 (256 10 ) hexadecimal minutes, and each minute into 10 16 (16 10 ) hexadecimal seconds.

  7. Orders of magnitude (time) - Wikipedia

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

    One billionth of one second 1 ns: The time needed to execute one machine cycle by a 1 GHz microprocessor 1 ns: The time light takes to travel 30 cm (11.811 in) 10 −6: microsecond: μs One millionth of one second 1 μs: The time needed to execute one machine cycle by an Intel 80186 microprocessor 2.2 μs: The lifetime of a muon

  8. Delete emails in AOL Mail

    help.aol.com/articles/delete-emails-in-new-aol-mail

    1. Open the folder or Inbox where your message is located. 2. Click the box next to the message you want deleted. 3. Click the Delete icon.

  9. Ampere-hour - Wikipedia

    en.wikipedia.org/wiki/Ampere-hour

    The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and for battery capacity where the commonly known nominal voltage is understood. A milliampere second (mA⋅s) is a unit of measurement used in X-ray imaging, diagnostic imaging, and radiation therapy. It is equivalent to a millicoulomb.