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<p class="MsoNormal"><span lang="EN-US">Cheers John,</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Have I got that Worsley paper?</span></p>
<p class="MsoNormal"><span lang="EN-US">Still need to derive the factor ‘ though. Martin did this. It is in our 1997 paper. It is based on the concept of the “rotation horizon” ( a phrase invented by my father, Grahame Williamson).</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Regards, John.</span></p>
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<div style="direction: ltr;" id="divRpF977508"><font face="Tahoma" color="#000000" size="2"><b>From:</b> General [general-bounces+john.williamson=glasgow.ac.uk@lists.natureoflightandparticles.org] on behalf of John Duffield [johnduffield@btconnect.com]<br>
<b>Sent:</b> Monday, November 16, 2015 7:58 PM<br>
<b>To:</b> 'Nature of Light and Particles - General Discussion'<br>
<b>Subject:</b> Re: [General] SU(2) equation set<br>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif; color:#000099">Chip:</span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif; color:#000099"> </span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif; color:#000099">Andrew Worsley told me about this:</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
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<span style="font-size:11.5pt; font-family:"Book Antiqua",serif" lang="EN-US"><span style="position:relative; top:16.0pt"><img src="cid:image002.png@01D120A9.29D91730" height="56" width="116"></span><span style="position:relative; top:16.0pt"><img src="cid:image004.png@01D120A9.29D91730" height="56" width="81"></span></span><span style="font-size:11.5pt; font-family:"Book Antiqua",serif">
 = 1.60218  x10<sup>-19</sup> <i>C</i>,                                      (1)</span><span style="font-size:11.5pt; font-family:"Book Antiqua",serif"></span></p>
<p class="MsoNormal" style="text-align:justify; text-autospace:none"><span style="font-size:10.0pt; font-family:"Book Antiqua",serif; color:black"> </span></p>
<p class="MsoNormal" style="text-align:justify; text-autospace:none"><span style="font-size:10.0pt; font-family:"Book Antiqua",serif; color:black">actual charge of the electron = 1.60218 x 10<sup>-19</sup></span><span style="font-size:6.5pt; font-family:"Book Antiqua",serif; color:black">
</span><i><span style="font-size:10.0pt; font-family:"Book Antiqua",serif; color:black">C</span></i><i><span style="font-family:"Book Antiqua",serif; color:black">,
</span></i><span style="font-size:10.0pt; font-family:"Book Antiqua",serif; color:black">where
<i>e </i>is the electron charge in Coulombs <i>C</i>,</span><span style="font-size:10.0pt; font-family:"Book Antiqua",serif; color:black" lang="EN-US"><span style="position:relative; top:6.0pt"><img src="cid:image006.png@01D120A9.29D91730" height="24" width="19"></span></span><span style="font-size:6.5pt; font-family:"Book Antiqua",serif; color:black" lang="EN-US">
</span><span style="font-size:10.0pt; font-family:"Book Antiqua",serif; color:black">is the electric constant, the ratio denoted by: ‘<i>
</i>is directly based on the electron magnetic moment to Bohr magneton ratio (see Appendix G),
<i>c </i>is the speed of light (for dimensions see Appendix E).</span><span style="font-size:11.5pt; font-family:"Book Antiqua",serif"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif; color:#000099">I think he’s barking up the right tree.</span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif; color:#000099"> </span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif; color:#000099">Regards</span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif; color:#000099">JohnD</span></p>
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