SI Prefixes: nano: 10^-9 micro: 10^-6 milli: 10^-3 giga: 10^9
A nanosecond is shorter than a microsecond. There are one thousand nanoseconds in a microsecond.
A Nanosecond
1 microsecond equals 0.001 milliseconds
A nanosecond is shorter than a millisecond
An attosecond is one quintillionth (10 to the power of minus 18) of a second. As of 2006, the smallest unit of time that was directly measured was on the order of 1 attosecond (10−18 s), or about 1026 Planck times. In physics, the Planck time, (tP), is the unit of time in the system of natural units known as Planck units. It is the time required for light to travel, in a vacuum, a distance of 1 Planck length. The unit is named after Max Planck, who was the first to propose it.
Time intervals longer than a second include the minute, hour, day, week, and year. Time intervals shorter than a second include the millisecond, microsecond, and nanosecond. Technically, the second is a metric unit. So, you can add any metric prefix to the second to increase or decrease the amount of time the unit represents.
* a millisecond or 1000th of a second * a nanosecond or a billionth of a second * a picosecond or a trillionth of a second
All and any moment of time that's shorter than a millisecond.
Examples: -- picosecond -- femtosecond -- yoctosecond -- attosecond
A macrosecond is a unit of time equal to one millionth of a second, or 10^-6 seconds. It is commonly used in scientific and technical fields where very precise measurements of time are necessary. In comparison, a microsecond is one thousand times shorter than a millisecond, and a macrosecond is one thousand times shorter than a microsecond.
One microsecond is one one-millionth of a second, or 0.000001 seconds. Being that it is considerably shorter than a second, the length of a second cannot be contained within this span of time.
heavier isotopes can be produces but their halflives are in the microsecond or shorter range.