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	<title>Poretsky&#039;s law of forms - Revision history</title>
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	<updated>2026-04-21T06:42:17Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<title>en&gt;Malcolma: added Category:Boolean algebra; removed {{uncategorized}} using HotCat</title>
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		<updated>2013-09-05T09:44:02Z</updated>

		<summary type="html">&lt;p&gt;added &lt;a href=&quot;/index.php?title=Category:Boolean_algebra&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;Category:Boolean algebra (page does not exist)&quot;&gt;Category:Boolean algebra&lt;/a&gt;; removed {{uncategorized}} using &lt;a href=&quot;/index.php?title=WP:HC&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;WP:HC (page does not exist)&quot;&gt;HotCat&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{Orphan|date=January 2014}}&lt;br /&gt;
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&amp;#039;&amp;#039;&amp;#039;Spitzer resistivity&amp;#039;&amp;#039;&amp;#039; is a classical model of [[electrical resistivity]] that is based upon electron ion collisions:&amp;lt;ref name=&amp;quot;trintchouk2003measurement&amp;quot;&amp;gt;{{cite journal| author=Trintchouk, Fedor, Yamada, M, Ji, H, Kulsrud, RM, Carter, TA| title=Measurement of the transverse Spitzer resistivity during collisional magnetic reconnection| journal=Physics of Plasmas| year=2003| volume=10| pages=319| accessdate=11 August 2013}}&amp;lt;/ref&amp;gt;&amp;lt;ref name=&amp;quot;davies2003electric&amp;quot;&amp;gt;{{cite journal| author=Davies, JR| title=Electric and magnetic field generation and target heating by laser-generated fast electrons| journal=Physical Review E| year=2003| volume=68| number=5| pages=056404| publisher=APS| accessdate=11 August 2013}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&amp;lt;math&amp;gt;\eta =\dfrac {\pi Ze^{2}m^{1/2}\ln \Lambda } {\left( 4\pi \varepsilon_{0}\right) ^{2}\left( k_{B}T\right)^{3/2}}&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
where η is the Spitzer resistivity, Z is ionization of nuclei, m is the electron mass, ε is the resistivity of free space, lnΛ is the [[Coulomb logarithm]], k&amp;lt;sub&amp;gt;B&amp;lt;/sub&amp;gt; is [[Boltzmann&amp;#039;s constant]] and T is the temperature in kelvins.&lt;br /&gt;
&lt;br /&gt;
This resistivity model was proposed by [[Lyman Spitzer]].&amp;lt;ref name=&amp;quot;forest1994determination&amp;quot;&amp;gt;{{cite journal| author=Forest, CB, Kupfer, K, Luce, TC, Politzer, PA, Lao, LL, Wade, MR, Whyte, DG, Wroblewski, D| title=Determination of the noninductive current profile in tokamak plasmas| journal=Physical review letters| year=1994| volume=73| number=18| pages=2444| publisher=APS| accessdate=11 August 2013}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
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Spitzer resistivity is commonly used in plasma physics.&amp;lt;ref name=&amp;quot;davies2003electric&amp;quot;/&amp;gt;&lt;br /&gt;
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==References==&lt;br /&gt;
{{reflist}}&lt;br /&gt;
&lt;br /&gt;
==External links==&lt;br /&gt;
*http://people.duke.edu/~ad159/files/p142/25.pdf&lt;br /&gt;
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[[Category:Electronics]]&lt;/div&gt;</summary>
		<author><name>en&gt;Malcolma</name></author>
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