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hz [2017/01/30 15:01]
stan_zurek -review
hz [2020/07/12 22:57]
stan_zurek [External links]
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 +====== Hz ======
  
 +|< 100% >|
 +| //[[user/Stan Zurek]], Hz, [[http://Encyclopedia-Magnetica.com|Encyclopedia-Magnetica.com]], {accessed @YEAR@-@MONTH@-@DAY@}// |
 +
 +**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 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}]])] 
 +
 +{{page>insert/paypal}}
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 +<box 40% right #f0f0f0>
 +50 Hz [[sine waveform]] has 20 ms cycle, and 100 Hz [[sawtooth waveform]] has 10 ms cycle
 +[[/file/sine_and_sawtooth_magnetica.png|{{sine_and_sawtooth_magnetica.png}}]]
 +{{page>insert/by_SZ}}
 +</box>
 +
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 +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}}
 +
 +===== See also =====
 +  *[[Electromagnetic units]]
 +
 +
 +===== References =====
 +~~REFNOTES~~
 +
 +{{tag>Units Counter}}
hz.txt · Last modified: 2020/07/19 01:01 by stan_zurek

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