Nanosecond

Common measurements

• 0.5 nanoseconds (0.5 ns) – the average life of a molecule of positronium hydride
• 1.0 nanosecond – cycle time for radio frequency 1 GHz (1×10⁹ hertz), an inverse unit. This corresponds to a radio wavelength of 1 light-nanosecond or 0.3 m, as can be calculated by multiplying 1 ns by the speed of light (approximately 3×10⁸ m/s) to determine the distance traveled.
• 1.0 nanosecond – cycle time for a 1 GHz processor. As of 2011, common processors have frequencies around 1–3.5 GHz, so the cycle time is somewhat shorter than a nanosecond.
• 1.017 nanoseconds (approximately) – time taken for light to travel 1 foot in a vacuum
• 3.33564095 nanoseconds (approximately) – time taken for light to travel 1 metre in a vacuum^[1] (In air or water light travels more slowly; see index of refraction)
• 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 (1×10⁸ hertz), radio wavelength 3 m (VHF, FM band)
• 12 nanoseconds – half-life of a K meson
• 20–40 nanoseconds – time of fusion reaction in a hydrogen bomb
• 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 (shortwave)
• 333 nanoseconds – cycle time of highest medium wave radio frequency, 3 MHz
• 500 nanoseconds – T1 time of Josephson phase qubit (see also Qubit) as of May 2005
• 1000 nanoseconds - one microsecond

See also

• International System of Units
• Jiffy (time)
• Microsecond
• Millisecond
• Orders of magnitude (time)
• Picosecond
• Second

References

1. "Official BIPM definition of the metre". BIPM. Retrieved 2008-09-22.