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<blockquote data-quote="Phil Graham" data-source="post: 33883" data-attributes="member: 430">Re: Helical Antenna &quot;Spin&quot; Determination?Polarization is a hard thing to understand. Transverse waves like EM radiation (i.e radio -&gt; microwave -&gt; infrared -&gt; light -&gt; xray -&gt; gamma radiation) have more complicated mathematical formalism than the longitudinal waves of sound.I was 20 years old and had talked myself into an internship at an <a href="http://www.mri.psu.edu/faculty/gopalan/Index.asp" target="_blank">optical materials lab group</a> at Penn State, having never had a formal class on anything in optics. I spent many evenings in the lounge of my Penn State dorm working to digest the classic introductory text for this topic &quot;<a href="http://www.amazon.com/Introduction-Electrodynamics-3rd-David-Griffiths/dp/013805326X/ref=sr_1_1?ie=UTF8&amp;qid=1312656300&amp;sr=8-1" target="_blank">Introduction to Electrodynamics</a>&quot; by Griffiths.Now, more than a decade later, I have two friends with PhDs in antenna design, and I (mostly) manage to not embarrass myself with them because of that time at Penn State.</blockquote>

[QUOTE="Phil Graham, post: 33883, member: 430"] Re: Helical Antenna "Spin" Determination? Polarization is a hard thing to understand. Transverse waves like EM radiation (i.e radio -> microwave -> infrared -> light -> xray -> gamma radiation) have more complicated mathematical formalism than the longitudinal waves of sound. I was 20 years old and had talked myself into an internship at an [URL="http://www.mri.psu.edu/faculty/gopalan/Index.asp"]optical materials lab group[/URL] at Penn State, having never had a formal class on anything in optics. I spent many evenings in the lounge of my Penn State dorm working to digest the classic introductory text for this topic "[URL="http://www.amazon.com/Introduction-Electrodynamics-3rd-David-Griffiths/dp/013805326X/ref=sr_1_1?ie=UTF8&qid=1312656300&sr=8-1"]Introduction to Electrodynamics[/URL]" by Griffiths. Now, more than a decade later, I have two friends with PhDs in antenna design, and I (mostly) manage to not embarrass myself with them because of that time at Penn State. [/QUOTE]

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