Nano-

Nano-

Nano-

Prefix denoting 10 to the −9th power

This article is about the SI prefix. For other uses, see Nano (disambiguation).

Nano (symbol n) is a unit prefix meaning one billionth. Used primarily with the metric system, this prefix denotes a factor of 10−9 or 0.000000001. It is frequently encountered in science and electronics for prefixing units of time and length.

Examples
  • Three gold atoms lined up are about one nanometer (nm) long.
  • If a toy marble were scaled down to one nanometer wide, Earth would scale to about 1 meter (3.3 ft) wide.[1]
  • One nanosecond (ns) is about the time required for light to travel 30 cm in air, or 20 cm in an optical fiber.
  • One nanometer per second (nm/s) is approximately the speed that a fingernail grows.
Look up nano- in Wiktionary, the free dictionary.

The prefix derives from the Greek νᾶνος (Latin nanus), meaning "dwarf". The General Conference on Weights and Measures (CGPM) officially endorsed the usage of nano as a standard prefix in 1960.

When used as a prefix for something other than a unit of measure (as for example in words like "nanoscience"), nano refers to nanotechnology, or means "on a scale of nanometres" (nanoscale).

More information Prefix, Base 10 ...

Nanometre

This section is an excerpt from Nanometre.[edit]
One nanometric carbon nanotube, photographed with scanning tunneling microscope
Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales. The nanometre is often used to express dimensions on an atomic scale and mostly in the molecular scale.
The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the International System of Units (SI), equal to one billionth (short scale) of a metre (0.000000001 m) and to 1000 picometres. One nanometre can be expressed in scientific notation as 1×10−9 m, and as 1/1000000000 metres.

X-rays have a wavelength ranging from the size of 0.01 nm to 10 nm.

Human fingernails are growing 1 nanometer per second.[4]

Nanosecond

This section is an excerpt from Nanosecond.[edit]
Look up nanosecond in Wiktionary, the free dictionary.

A nanosecond (ns) is a unit of time in the International System of Units (SI) equal to one billionth of a second, that is, 1⁄1 000 000 000 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 1⁄1000 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.

See also

References

  1. [1]
    "Size of the Nanoscale". National Nanotechnology Initiative. Retrieved 2020-05-14.
  2. [2]
    "On the extension of the range of SI prefixes". 18 November 2022. Retrieved 5 February 2023.
  3. [3]
    "Metric (SI) Prefixes". NIST.
  4. [4]
    "Examples of Nanoscale Objects". ThoughtCo. Retrieved 2024-03-16.
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