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Concept
Nanosecond
Summary
A nanosecond (ns) is a unit of time in the International System of Units (SI) equal to one billionth of a second, that is, of a second, or 10^−9 seconds.
The term combines the SI prefix nano- indicating a 1 billionth submultiple of an SI unit (e.g. nanogram, nanometre, etc.) and second, the primary unit of time in the SI.
A nanosecond is equal to 1000 picoseconds or microsecond. Time units ranging between 10^−8 and 10^−7 seconds are typically expressed as tens or hundreds of nanoseconds.
Time units of this granularity are commonly found in telecommunications, pulsed lasers, and related aspects of electronics.
0.001 nanoseconds – one picosecond
0.5 nanoseconds – the half-life of beryllium-13.
0.96 nanoseconds – 100 Gigabit Ethernet Interpacket gap
1.0 nanosecond – cycle time of an electromagnetic wave with a frequency of 1 GHz (1 hertz).
1.0 nanosecond – electromagnetic wavelength of 1 light-nanosecond. Equivalent to 0.3m radio band.
nanoseconds (by definition) – time taken by light to travel 1 foot in a vacuum.
nanoseconds (by definition) – time taken by light to travel 1 metre in a vacuum.
8 nanoseconds - typical propagation delay of 74HC series logic chips based on HCMOS technology, commonly used for digital electronics in the mid-1980s.
10 nanoseconds – one "shake", (as in a "shake of a lamb's tail") approximate time of one generation of a nuclear chain reaction with fast neutrons
10 nanoseconds – cycle time for frequency 100 MHz (1 hertz), radio wavelength 3 m (VHF, FM band)
10 nanoseconds – half-life of lithium-12
12 nanoseconds – mean lifetime of a charged K meson
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)
96 nanoseconds – Gigabit Ethernet Interpacket gap
100 nanoseconds – cycle time for frequency 10 MHz, radio wavelength 30 m (shortwave)
299 nanoseconds – half-life of polonium-212
333 nanoseconds – cycle time of highest medium wave radio frequency, 3 MHz
500 nanoseconds
Official source
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