Revision as of 21:27, 10 September 2024 edit Quondum (talk \| contribs) Extended confirmed users 36,536 edits change of target article name 2019 redefinition of the SI base units → 2019 revision of the SI (and changing displayed text too) ← Previous edit		Latest revision as of 22:45, 28 October 2024 edit undo Quondum (talk \| contribs) Extended confirmed users 36,536 edits some cleanup
Line 5: {{Infobox \| above = statvolt \| label2 = [[System of measurement\|Unit system]] \| data2 = [[Centimetre–gram–second_system_of_units#Electrostatic_units_(ESU)\|CGS-ESU]] and [[Gaussian units\|CGS-Gaussian]] \| label3 = Unit of \| \| data3 = [[electric potential]], [[electric potential difference]] ([[voltage]]), and [[electromotive force]] \| label4 = Symbol \| data4 = statV \| label5 = Named after \| data5 = [[Alessandro Volta]] \| label6 = In CGS base units \| data6 = g{{sup\|1/2}}·cm{{sup\|1/2}}/s {{refn\|name="Gyllenbok 2018"\| {{cite book \|last1=Gyllenbok \|first1=Jan Line 18: \| header7 =Conversions \| data8 = <tr class="nowrap"><td>{{val\|1\|u=statV}} ''in ...''</td><td>''... corresponds to ...''</td></tr> \| label9 = [[SI]] \| data9 = {{math\|''c''}}{{sub\|cgs}} {{val\|e=-8\|ul=volt}}<{{br>}}= {{val\|299.792458\|u=volt}}{{efn\|name="cCGC"\|The dimensionless constant {{math\|''c''}}{{sub\|cgs}} {{=}} {{val\|2.99792458e10}} is numerically equal to the magnitude of the [[speed of light]] when the latter is expressed in {{val\|u=cm/s}}.}} \| label10 = [[Centimetre–gram–second_system_of_units#Electrostatic_units_(ESU)\|CGS-EMU]] \| data10 = {{math\|''c''}}{{sub\|cgs}} [[abvolt]] Line 24: The '''statvolt''' is a unit of [[voltage]] and [[electrical potential]] used in the [[Centimetre–gram–second_system_of_units#Electrostatic_units_(ESU)\|CGS-ESU]] and [[Gaussian units\|gaussian]] systems of units. In terms of its relation to the [[SI]] units, one statvolt corresponds to {{math\|''c''}}{{sub\|cgs}} {{val\|e=-8\|ul=volt}},{{efn\|name="cCGC"}} i.e. to 299.792458 [[volt]]s.{{refn\|name="Purcell"\|{{cite book\|last=Purcell\|first=Edward\|title=Electricity and Magnetism\|url=https://archive.org/details/electricitymagne00purc_621\|url-access=limited\|year=2011\|publisher=Cambridge University Press\|location=Cambridge\|isbn=9781107013605\|pages=[https://archive.org/details/electricitymagne00purc_621/page/n493 474]–475\|edition=Second}}}}{{efn\|As of the [[2019 revision of the SI]], this correspondence is not longer exact.}} The statvolt is also defined in the [[CGS]] system as 1 [[erg]] /per [[statcoulomb]].{{refn\|name="Purcell"}} It is a useful unit for [[electromagnetism]] because, in a vacuum, an [[electric field]] of one statvolt per centimetre has the same energy density as a [[magnetic field]] of one [[Gauss (unit)\|gauss]]. Likewise, a plane wave propagating in a vacuum has perpendicular electric and magnetic fields such that for every gauss of magnetic field intensity there is one statvolt/cm of electric field intensity.{{refn\|name="Purcell"}} In the CGS-EMU system, the unit of voltage is the [[abvolt]].

Statvolt: Difference between revisions

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