Femto-
- Femto-
Femto- is a unit prefix in the metric system denoting a factor of 10−15. It was added to the International System of Units (SI) in 1964. The prefix comes from the Danish word femten, meaning "fifteen".
Applications[edit | edit source]
Femto- is used in various scientific fields to denote extremely small measurements. Some common applications include:
- Femtosecond: A femtosecond is 10−15 of a second. It is used in ultrafast lasers and chemical reactions to measure extremely short time intervals.
- Femtometer: A femtometer, also known as a fermi, is 10−15 of a meter. It is used in nuclear physics to measure the size of atomic nuclei.
- Femtoampere: A femtoampere is 10−15 of an ampere. It is used in electronics to measure very small electric currents.
Related Concepts[edit | edit source]
- Pico-: A unit prefix denoting a factor of 10−12.
- Atto-: A unit prefix denoting a factor of 10−18.
- Metric system: A decimal-based system of measurement used internationally.
See Also[edit | edit source]
References[edit | edit source]
- International Bureau of Weights and Measures (BIPM). "The International System of Units (SI)".
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