Speed of light in vacuum is approx 3 .0E+8 m/s (3.0x 10^8). This is the speed of propagation of an electromagnetic wave, slightly slower when confined to a cable or waveguide.
So in a nanosecond a wave (or photon) travels 0.3 metres.
http://staffweb.cms.gre.ac.uk/~k.mcmanus/
nanosecond.
Nanosecond
A nanosecond
The word nanosecond is a noun. The plural form is nanoseconds.
A nanosecond is shorter than a microsecond. There are one thousand nanoseconds in a microsecond.
A nanosecond is larger than a picosecond. Specifically, one nanosecond is equal to 1,000 picoseconds. Therefore, when comparing the two, a nanosecond represents a longer duration than a picosecond.
1 nanosecond is 1 billionth of a second. i.e. 1 nanosecond = 10−9 seconds.
A nanosecond is smaller than a microsecond. A nanosecond is one billionth of a second, while a microsecond is one millionth of a second.
How long does a nanosecond last, a millionth of a second or a billionth of a second?A nanosecond lasts a billionth of a second.
3.14159265358 moments make up 1 nanosecond
A nanosecond is a billionth of a second and this is how you write it in standard notation 0.00000001
a nanosecond is smaller a millisecond is one thousand times smaller than a second and a nanosecond is one billion times smaller than a second