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(1 Ms = 11 d 13 h 46 min 40 s = 1,000,000 s) 1.6416 Ms (19 d): The length of a month of the Baha'i calendar. 2.36 Ms (27.32 d): The length of the true month, the orbital period of the Moon 2.4192 Ms (28 d): The length of February, the shortest month of the Gregorian calendar, in common years 2.5056 Ms (29 d): The length of February in leap years
1 millisecond (1 ms) – cycle time for frequency 1 kHz; duration of light for typical photo flash strobe; [5] time taken for sound wave to travel about 34 cm; repetition interval of GPS C/A PN code; 1 millisecond – time taken for light to travel 204.19 km in a single mode fiber optic cable for a wavelength of 1550 nm (frequency: 193 THz).
The Jiffy is the amount of time light takes to travel one femtometre (about the diameter of a nucleon). The Planck time is the time that light takes to travel one Planck length. The TU (for time unit) is a unit of time defined as 1024 μs for use in engineering. The svedberg is a time unit used for sedimentation rates (usually
20–40 nanoseconds – time of fusion reaction in a hydrogen bomb; 30 nanoseconds – half-life of carbon-21; 77 nanoseconds – a sixth (a 60th of a 60th of a 60th of a 60th of a second) 100 nanoseconds – cycle time for frequency 10 MHz, radio wavelength 30 m ; 294.4 nanoseconds – half-life of polonium-212 [4]
Metric time is the measure of time intervals using the metric system. The modern SI system defines the second as the base unit of time, and forms multiples and submultiples with metric prefixes such as kiloseconds and milliseconds. Other units of time – minute, hour, and day – are accepted for use with SI, but are not part of it
It is the time between the gate input becoming stable and the gate output becoming stable. Manufacturers often refer to the time from the input changing to 50% of its final input level, to the output reaching 50% of its final output level; this may depend on the direction of the level change, in which case separate fall and rise delays t PHL ...
Software timekeeping systems vary widely in the resolution of time measurement; some systems may use time units as large as a day, while others may use nanoseconds.For example, for an epoch date of midnight UTC (00:00) on 1 January 1900, and a time unit of a second, the time of the midnight (24:00) between 1 January 1900 and 2 January 1900 is represented by the number 86400, the number of ...
When a program wants to time its own operation, it can use a function like the POSIX clock() function, which returns the CPU time used by the program. POSIX allows this clock to start at an arbitrary value, so to measure elapsed time, a program calls clock(), does some work, then calls clock() again. [1] The difference is the time needed to do ...