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U [[Fizika|fizici]], '''elektronvolt'''<ref>[http://goldbook.iupac.org/E02014.html IUPAC Gold Book], p. 75</ref><ref>[http://www.bipm.org/en/si/si_brochure/chapter4/table7.html ''SI brochure'']<sup class="noprint Inline-Template"><span style="white-space: nowrap;">[''[[Wikipedia:Mrtav link|<span title=" since May 2015">dead link</span>]]'']</span></sup>, Sec. 4.1 Table 7</ref> (simbol '''eV'''; također se piše '''elektron volt''') jeste jedinica energije jednaka približno 160 zeptodžula (simbol zJ) ili
[[Datoteka:Light_spectrum.svg|right|frame|'''Frekvencija fotona p. energije čestice u elektronvoltima'''. Energija fotona varira sa frekvencijom fotona, što je vezano konstantom brzine svjetlosti. Ovi kontrasti sa masivnim česticama od kojih energija zavisi od svoje brzine i ostatka mase.<ref>[http://cbst.ucdavis.edu/education/courses/winter-2006-IST8A/ist8a_2006_01_09light.pdf What is Light?] </ref><ref>{{cite web|author = Elert, Glenn|url = http://hypertextbook.com/physics/electricity/em-spectrum/|title = The Electromagnetic Spectrum, The Physics Hypertextbook|publisher = Hypertextbook.com|accessdate = 2010-10-16}}</ref><ref>{{cite web|url = http://www.vlf.it/frequency/bands.html|title = Definition of frequency bands on|publisher = Vlf.it|accessdate = 2010-10-16}}</ref><br>
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Elektronvolt nije [[SI sistem|SI jedinica]], te je njegova definicija empirijska (za razliku od [[Litar|litra]], [[Svjetlosna godina|svjetlosne godine]] i ostalih takvih ne-SI jedinica), tako da njegova vrijednost u SI jedinicama mora biti dobijena eksperimentalno.<ref>{{cite web|url = http://physics.nist.gov/cuu/Units/outside.html|title = Definitions of the SI units: Non-SI units}}</ref> Kao elementarni naboj na kojem je zasnovan, on nije nezavisnog kvantiteta nego je jednak
U nekim starijim dokumentima, i u imenu [[Bevatron]], simbol BeV se koristi, koji stoji za milijardu eV; to je ekvivalent za GeV.
{| class="wikitable" id="cx135" style="float:right; margin:0 0 1em 1em;" data-source="135" data-cx-weight="378" contenteditable="true" data-cx-draft="true"
! id="138" | Mjera
! id="140" | Jedinica
! id="142" | SI vrijednost jedinice
|- id="144"
| id="145" | Energija
| id="147" | eV
| id="149" | <span class="nowrap" contenteditable="false"><span class="sortkey" style="display:none">6981160217656499999♠</span><span style="white-space:nowrap">1.602<span style="margin-left:.25em">176</span><span style="margin-left:.25em">565</span></span>(35)<span style="margin-left:0.25em;margin-right:0.15em">×</span>10<sup>−<span style="white-space:nowrap">19</span></sup> J</span>
|- id="151"
| id="152" | Masa
| id="154" | eV/''c''<sup>2</sup>
| id="156" | <span class="nowrap" contenteditable="false"><span class="sortkey" style="display:none">6964178266199900000♠</span><span style="white-space:nowrap">1.782<span style="margin-left:.25em">662</span></span><span style="margin-left:0.25em;margin-right:0.15em">×</span>10<sup>−<span style="white-space:nowrap">36</span></sup> kg</span>
|- id="158"
| id="159" | Momentum
| id="161" | eV/''c''
| id="163" | <span class="nowrap" contenteditable="false"><span class="sortkey" style="display:none">6972534428600000000♠</span><span style="white-space:nowrap">5.344<span style="margin-left:.25em">286</span></span><span style="margin-left:0.25em;margin-right:0.15em">×</span>10<sup>−<span style="white-space:nowrap">28</span></sup> kg⋅m/s</span>
|- id="165"
| id="166" | Temperatura
| id="168" | eV/''k''<sub>B</sub>
| id="170" | <span class="nowrap" contenteditable="false"><span class="sortkey" style="display:none">7004116045050099999♠</span><span style="white-space:nowrap">11<span style="margin-left:.25em">604</span>.505</span>(20) K</span>
|- id="172"
| id="173" | Vrijeme
| id="175" | ''ħ''/eV
| id="177" | <span class="nowrap" contenteditable="false"><span class="sortkey" style="display:none">6984658211900000000♠</span><span style="white-space:nowrap">6.582<span style="margin-left:.25em">119</span></span><span style="margin-left:0.25em;margin-right:0.15em">×</span>10<sup>−<span style="white-space:nowrap">16</span></sup> s</span>
|- id="179"
| id="180" | Udaljenost
| id="182" | ''ħc''/eV
| id="184" | <span class="nowrap" contenteditable="false"><span class="sortkey" style="display:none">6993197327000000000♠</span><span style="white-space:nowrap">1.973<span style="margin-left:.25em">27</span></span><span style="margin-left:0.25em;margin-right:0.15em">×</span>10<sup>−<span style="white-space:nowrap">7</span></sup> m</span>
|}
== Također pogledajte ==
* <span style="background-color: rgb(254, 252, 224);">Volt</span>
* <span style="background-color: rgb(254, 252, 224);">Amper</span>
* <span style="background-color: rgb(254, 252, 224);">Džul</span>
== Reference ==
{{Reflist|2}}
== Vanjski linkovi ==
* [http://www1.bipm.org/en/si/si_brochure/chapter4/table7.html BIPMova definicija eV] (en)
* [http://physics.nist.gov/cuu/Constants physical constants reference; CODATA data]
[[Kategorija:Fizika elementarnih čestica]]
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