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	<title>Solana hard disk equation of state - Revision history</title>
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	<updated>2026-04-28T17:53:38Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://www.sklogwiki.org/SklogWiki/index.php?title=Solana_hard_disk_equation_of_state&amp;diff=8535&amp;oldid=prev</id>
		<title>Nice and Tidy: New page: The &#039;&#039;&#039;Solana&#039;&#039;&#039;  equation of state for hard disks (2-dimensional  hard spheres) is given by Eq. 26 of &lt;ref&gt;[http://dx.doi.org/10.1080/00...</title>
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		<updated>2009-06-19T14:33:52Z</updated>

		<summary type="html">&lt;p&gt;New page: The &amp;#039;&amp;#039;&amp;#039;Solana&amp;#039;&amp;#039;&amp;#039; &lt;a href=&quot;/SklogWiki/index.php/Equations_of_state&quot; title=&quot;Equations of state&quot;&gt; equation of state&lt;/a&gt; for &lt;a href=&quot;/SklogWiki/index.php/Hard_disks&quot; class=&quot;mw-redirect&quot; title=&quot;Hard disks&quot;&gt;hard disks&lt;/a&gt; (2-dimensional &lt;a href=&quot;/SklogWiki/index.php/Hard_sphere_model&quot; title=&quot;Hard sphere model&quot;&gt; hard spheres&lt;/a&gt;) is given by Eq. 26 of &amp;lt;ref&amp;gt;[http://dx.doi.org/10.1080/00...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;The &amp;#039;&amp;#039;&amp;#039;Solana&amp;#039;&amp;#039;&amp;#039; [[Equations of state | equation of state]] for [[hard disks]] (2-dimensional [[hard sphere model | hard spheres]]) is given by Eq. 26 of&lt;br /&gt;
&amp;lt;ref&amp;gt;[http://dx.doi.org/10.1080/00268970902942250 A. Mulero,  I. Cachadiña and  J. R. Solana &amp;quot;The equation of state of the hard-disc fluid revisited&amp;quot;, Molecular Physics &amp;#039;&amp;#039;&amp;#039;107&amp;#039;&amp;#039;&amp;#039; pp. 1457-1465 (2009)]&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
:&amp;lt;math&amp;gt;Z = \frac{1 + \eta^2/8 - \eta^4/10}{(1-\eta)^2} &amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
where the packing fraction is given by &amp;lt;math&amp;gt;\eta = \pi \rho \sigma^2 /4 &amp;lt;/math&amp;gt; where &amp;lt;math&amp;gt;\sigma&amp;lt;/math&amp;gt; is the diameter of the disks.&lt;br /&gt;
==References==&lt;br /&gt;
&amp;lt;references/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
[[Category: Equations of state]]&lt;/div&gt;</summary>
		<author><name>Nice and Tidy</name></author>
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