hz

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hz [2020/02/10 14:26] (current) Dr Stan Zurek |
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**Hz** or **hertz** - a unit of [[frequency]], reciprocal of [[period|cycle]] or [[period]]. | **Hz** or **hertz** - a unit of [[frequency]], reciprocal of [[period|cycle]] or [[period]]. | ||

- | According to the [[SI]] terminology, //hertz// is a [[coherent derived unit]], because it can be derived from the [[base unit]] of //second// by raising to the power of -1. Hertz can only be applied to period phenomena.[([[http://www.bipm.org/en/publications/si-brochure/section2-2.html|Section 2.2: SI derived units, SI Brochure: The International System of Units (SI) [8th edition, 2006; updated in 2014] {accessed 2015-09-10}]])] | + | According to the [[SI]] terminology, //hertz// is a [[coherent derived unit]], because it can be derived from the [[base unit]] of //second// by raising to the power of -1. Hertz can only be applied to periodic phenomena.[([[http://www.bipm.org/en/publications/si-brochure/section2-2.html|Section 2.2: SI derived units, SI Brochure: The International System of Units (SI) [8th edition, 2006; updated in 2014] {accessed 2015-09-10}]])] |

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- | In older publications the phrase **//cycles per second//** (or **//c.p.s.//**) was used to denote frequency, and it was a unit synonymous with hertz so that 1 cps = 1 Hz.[([[http://www.bipm.org/en/publications/si-brochure/section2-2-2.html|Units with special names and symbols; units that incorporate special names and symbols, SI Brochure: The International System of Units (SI) [8th edition, 2006; updated in 2014] {accessed 2015-09-10}]])][([[http://google.com/books?isbn=9781475769180|Douglas M. Considine, Glenn D. Considine, Frequency, Van Nostrand’s Scientific Encyclopedia, Springer Science & Business Media, 2013, ISBN 9781475769180, p. 1343]])] | + | In older publications the phrase **//cycles per second//** (**cps** or **//c.p.s.//**) was used to denote frequency, and it was a unit synonymous with hertz so that 1 cps = 1 Hz.[([[http://www.bipm.org/en/publications/si-brochure/section2-2-2.html|Units with special names and symbols; units that incorporate special names and symbols, SI Brochure: The International System of Units (SI) [8th edition, 2006; updated in 2014] {accessed 2015-09-10}]])][([[http://google.com/books?isbn=9781475769180|Douglas M. Considine, Glenn D. Considine, Frequency, Van Nostrand’s Scientific Encyclopedia, Springer Science & Business Media, 2013, ISBN 9781475769180, p. 1343]])] |

{{page>calculator/frequency and time}} | {{page>calculator/frequency and time}} |

hz.txt · Last modified: 2020/02/10 14:26 by Dr Stan Zurek