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	<title>The Arizona Rifleman &#187; SCIENCE!</title>
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	<link>http://www.arizonarifleman.com</link>
	<description>Shooter, Scientist</description>
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		<title>Quote of the Day</title>
		<link>http://www.arizonarifleman.com/2010/02/02/quote-of-the-day-15/</link>
		<comments>http://www.arizonarifleman.com/2010/02/02/quote-of-the-day-15/#comments</comments>
		<pubDate>Wed, 03 Feb 2010 06:04:17 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[Quote of the Day]]></category>
		<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1456</guid>
		<description><![CDATA[Screw quantum mechanics. I should have become a rocket scientist; it&#8217;d be easier.
- Me, after a particularly mind-warping quantum mechanics class.
]]></description>
			<content:encoded><![CDATA[<blockquote><p>Screw quantum mechanics. I should have become a rocket scientist; it&#8217;d be easier.</p></blockquote>
<p>- Me, after a particularly mind-warping quantum mechanics class.</p>
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		<slash:comments>2</slash:comments>
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		<item>
		<title>New Shooter Report &#8211; Delayed</title>
		<link>http://www.arizonarifleman.com/2009/11/20/new-shooter-report-delayed/</link>
		<comments>http://www.arizonarifleman.com/2009/11/20/new-shooter-report-delayed/#comments</comments>
		<pubDate>Sat, 21 Nov 2009 05:06:04 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1406</guid>
		<description><![CDATA[Busy with graduate school applications and science. Write-up on the recently mentioned new-shooter report is delayed somewhat.
]]></description>
			<content:encoded><![CDATA[<p>Busy with graduate school applications and science. Write-up on the recently mentioned new-shooter report is delayed somewhat.</p>
]]></content:encoded>
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		<slash:comments>1</slash:comments>
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		<item>
		<title>Note To Self</title>
		<link>http://www.arizonarifleman.com/2009/10/28/note-to-self-2/</link>
		<comments>http://www.arizonarifleman.com/2009/10/28/note-to-self-2/#comments</comments>
		<pubDate>Wed, 28 Oct 2009 07:19:03 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[Physics]]></category>
		<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1371</guid>
		<description><![CDATA[When constructing a custom, non-sealed Geiger–Müller tube in a chamber in which you can vary the gas mix and pressure, pay attention to sharp edges of electrified parts outside of the tube itself: you ensured there was no sharp edges inside the tube, so avoid points where the electric field is stronger, thus avoiding inadvertent [...]]]></description>
			<content:encoded><![CDATA[<p>When constructing a custom, non-sealed <a href="http://en.wikipedia.org/wiki/Geiger%E2%80%93M%C3%BCller_tube">Geiger–Müller tube</a> in a chamber in which you can vary the gas mix and pressure, pay attention to sharp edges of electrified parts outside of the tube itself: you ensured there was no sharp edges <em>inside</em> the tube, so avoid points where the electric field is stronger, thus avoiding inadvertent ionization of the gas mix.</p>
<p>When the same potential is applied to parts outside the tube, also in the chamber, sharp parts (e.g. a nut and the end of a piece of wire) can cause strong electric fields to be produced. This can cause a <a href="http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/atspect3.html">fun, purple glow</a><sup>1</sup> from one&#8217;s apparatus. This is bad.</p>
<p>Fortunately the high-voltage power supply is current-limited, and no damage took place.</p>
<p>In related news, electrical tape is extremely useful at insulating (amazingly enough) electrical devices and can stop the aforementioned problem.</p>
<ol class="footnotes"><li id="footnote_0_1371" class="footnote"> The gas in the chamber was mostly argon. </li></ol>]]></content:encoded>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>This Looks Like Fun</title>
		<link>http://www.arizonarifleman.com/2009/10/22/this-looks-like-fun/</link>
		<comments>http://www.arizonarifleman.com/2009/10/22/this-looks-like-fun/#comments</comments>
		<pubDate>Thu, 22 Oct 2009 07:58:55 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[Humor]]></category>
		<category><![CDATA[Physics]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1357</guid>
		<description><![CDATA[
A rather detailed news report about the&#8230;sport of anvil shooting can be found here.
Now, the question is&#8230;where can I get an anvil?
]]></description>
			<content:encoded><![CDATA[<p><object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="425" height="344" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="allowFullScreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="src" value="http://www.youtube.com/v/IhQ4dE_RGnQ&amp;hl=en&amp;fs=1&amp;" /><param name="allowfullscreen" value="true" /><embed type="application/x-shockwave-flash" width="425" height="344" src="http://www.youtube.com/v/IhQ4dE_RGnQ&amp;hl=en&amp;fs=1&amp;" allowscriptaccess="always" allowfullscreen="true"></embed></object></p>
<p>A rather detailed news report about the&#8230;sport of anvil shooting can be found <a href="http://www.riverfronttimes.com/2009-10-21/news/aint-rocket-science-people-talk-about-joy-sex-dont-last-nothin-shootin-anvils/1">here</a>.</p>
<p>Now, the question is&#8230;where can I get an anvil?</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Poor Photons</title>
		<link>http://www.arizonarifleman.com/2009/09/19/poor-photons/</link>
		<comments>http://www.arizonarifleman.com/2009/09/19/poor-photons/#comments</comments>
		<pubDate>Sun, 20 Sep 2009 05:26:25 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[Astronomy]]></category>
		<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1265</guid>
		<description><![CDATA[Last night, I found myself up at the observatory again. Surprisingly it was not a Dark and Stormy Night, but there were a few clouds that kept us from opening for some time.
Personally, I find it somewhat of a downer that these photons originated in a star mumbledy-mumbledy brazillion miles away, flew through the uncharted [...]]]></description>
			<content:encoded><![CDATA[<p>Last night, I found myself up at the observatory again. Surprisingly it was <em>not</em> a Dark and Stormy Night, but there were a few clouds that kept us from opening for some time.</p>
<p>Personally, I find it somewhat of a downer that these photons originated in a star mumbledy-mumbledy brazillion miles away, flew through the uncharted depths of space past wonders unknown by human minds, avoided vast interstellar dust clouds and other celestial obstructions, and traveled on a path destined to intersect the imaging system of a particular telescope on a particular mountain on the third planet of a rather ordinary, uninteresting star in the spiral arm of one of billions of galaxies&#8230;only to be intercepted at the very last possible moment by a wayward floating blob of water vapor a few hundred feet above the telescope.</p>
<p>The final result of their mumbledy-mumbledy brazillion mile tour of the universe was not, unfortunately, to be detected by advanced equipment, analyzed by up-and-coming scientists, and hopefully used to allow said scientists to better understand the universe. Rather, the result was that a particular blob of floating water vapor was heated by some infinitesimal fraction of a degree while the scientists below shake their fists and curse the clouds.</p>
<p>Truly, a rather pedestrian end to a photon that has traveled so far.</p>
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		<item>
		<title>Damn You Mother Nature!</title>
		<link>http://www.arizonarifleman.com/2009/09/04/damn-you-mother-nature/</link>
		<comments>http://www.arizonarifleman.com/2009/09/04/damn-you-mother-nature/#comments</comments>
		<pubDate>Sat, 05 Sep 2009 04:51:01 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[Astronomy]]></category>
		<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1231</guid>
		<description><![CDATA[I was scheduled to observe at the 61&#8243; Kuiper Telescope tonight.
Alas, mother nature decided this was not going to work, and gave us clouds and lightning. As such, we didn&#8217;t get to start observing at all and are now off the mountain.
In other news, the observatory is pretty nifty. I&#8217;ve never been at this one [...]]]></description>
			<content:encoded><![CDATA[<p>I was scheduled to observe at the <a href="http://james.as.arizona.edu/~psmith/61inch/">61&#8243; Kuiper Telescope</a> tonight.</p>
<p>Alas, mother nature decided this was not going to work, and gave us clouds and lightning. As such, we didn&#8217;t get to start observing at all and are now off the mountain.</p>
<p>In other news, the observatory is pretty nifty. I&#8217;ve never been at this one before.</p>
]]></content:encoded>
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		<slash:comments>5</slash:comments>
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		<item>
		<title>Doing Math for Fun and Science</title>
		<link>http://www.arizonarifleman.com/2009/08/19/doing-math-for-fun-and-science/</link>
		<comments>http://www.arizonarifleman.com/2009/08/19/doing-math-for-fun-and-science/#comments</comments>
		<pubDate>Wed, 19 Aug 2009 10:11:56 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1183</guid>
		<description><![CDATA[The girlfriend of one of my fellow physics students works on the Lunar Reconnaissance Orbiter project.
Tonight as a bunch of us physics folks were sitting around my apartment chatting (the girlfriend was up in the Phoenix area), my friend noticed her status message on Skype posed a practical question which I paraphrase as, &#8220;If a [...]]]></description>
			<content:encoded><![CDATA[<p>The girlfriend of one of my fellow physics students works on the <a href="http://lro.gsfc.nasa.gov/">Lunar Reconnaissance Orbiter</a> project.</p>
<p>Tonight as a bunch of us physics folks were sitting around my apartment chatting (the girlfriend was up in the Phoenix area), my friend noticed her status message on Skype posed a practical question which I paraphrase as, &#8220;If a spacecraft 20km away from the LRO vents ~100g of <a href="http://en.wikipedia.org/wiki/Hydrazine">hydrazine</a>, what&#8217;s the probability of hydrazine impacting the LRO&#8217;s optical elements? You have 20 minutes.&#8221;</p>
<p>Taking this is as a challenge, we started calculating the answer. We knew very little details, so we made some assumptions: the hydrazine is in a spherically-symmetric expanding shell, both spacecraft are stationary relative to each other, and gravity is not a factor. In a few minutes we came up with a quick, dirty, back-of-the-envelope calculation that indicated that it would be very unlikely for any hydrazine to contact the optics and, if any did, it would be a very small amount (on the order of a few molecules).</p>
<p>My friend relayed our calculations and results to his girlfriend, who was surprised: she didn&#8217;t actually expect anyone to bother working stuff out. After a short while, she informed us that our calculations had been passed upstream to NASA for their consideration.</p>
<p>Very cool.</p>
<p>Of course, our calculations were almost certainly unrealistic. Even so, they provide a starting point.</p>
<p>Yes, physics students actually do this sort of thing in their spare time.</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Watchlists</title>
		<link>http://www.arizonarifleman.com/2009/07/31/watchlists/</link>
		<comments>http://www.arizonarifleman.com/2009/07/31/watchlists/#comments</comments>
		<pubDate>Fri, 31 Jul 2009 17:36:36 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[Physics]]></category>
		<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1131</guid>
		<description><![CDATA[I&#8217;m sure I&#8217;m now on some sort of government watchlist.
Why? Just now, I have several windows open in Firefox, each with several tabs.
Among the various tabs open, one had the contact information for a local pizza parlor, another had the .223 page of Ammoman, a third had the Wikipedia article about plutonium, another about various [...]]]></description>
			<content:encoded><![CDATA[<p>I&#8217;m sure I&#8217;m now on some sort of government watchlist.</p>
<p>Why? Just now, I have several windows open in Firefox, each with several tabs.</p>
<p>Among the various tabs open, one had the contact information for a local pizza parlor, another had the .223 page of Ammoman, a third had the Wikipedia article about plutonium, another about various radiation-emitting nuclear reactor accidents that have occurred, one showed the page for the D-Zero accelerator project from Fermilab, and another displayed the university&#8217;s physics department website.</p>
<p>I&#8217;m not entirely sure what terrible, nefarious plots the feds might think I&#8217;m up to, but <span style="text-decoration: line-through;">they&#8217;re all true MUWHAHAHAHA!</span> there is absolutely no truth involved in any of them. I just happened to be doing a bit of research (Fermilab, physics department), being distracted and reading about plutonium and reactor accidents (just for the heck of it), was looking for ammo deals, and was hungry. Really. I swear.</p>
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		<item>
		<title>Long Shot</title>
		<link>http://www.arizonarifleman.com/2009/06/30/long-shot/</link>
		<comments>http://www.arizonarifleman.com/2009/06/30/long-shot/#comments</comments>
		<pubDate>Wed, 01 Jul 2009 06:06:07 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[Personal]]></category>
		<category><![CDATA[Physics]]></category>
		<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1071</guid>
		<description><![CDATA[Anyone have any good advice for a newly-minted graduate with a B.S. in Physics and a minor in math?
After getting out of the army a few years back, I thought it&#8217;d be a good idea to finish up my bachelors degree, so I&#8217;ve spent the last few years cloistered in the Physics &#38; Atmospheric Sciences [...]]]></description>
			<content:encoded><![CDATA[<p>Anyone have any good advice for a newly-minted graduate with a B.S. in Physics and a minor in math?</p>
<p>After getting out of the army a few years back, I thought it&#8217;d be a good idea to finish up my bachelors degree, so I&#8217;ve spent the last few years cloistered in the Physics &amp; Atmospheric Sciences building at the University of Arizona. Now, I&#8217;m in the home stretch: if everything goes to plan, I will graduate next spring and be married shortly thereafter.</p>
<p>Unfortunately, this brings up the big question, &#8220;What next?&#8221; Do I go into industry? If so, where? Doing what? Maybe work as a lab technician? Teach? At what level? Do I go on to graduate school? Where? For what<sup>1</sup> Should I pursue a Masters or shoot for the Doctorate?</p>
<p>My soon-to-be-wife is a high school math teacher in the Phoenix region. While she makes a decent salary, it&#8217;s insufficient for her to be a sugar mama. Fortunately the grad schools I&#8217;ve been looking at will cover my tuition and pay of a stipend (not much, but it&#8217;s enough to live on), and the VA will give me ~$600 or so per month plus some money for tuition and books for three years, so we should be reasonably set for money, so long as we&#8217;re smart about it.</p>
<p>In addition to actually doing scientific research, I enjoy teaching, and would very much like to be a university professor at some point. In nearly all cases I&#8217;ve looked at, this requires a Ph.D. and from what I&#8217;ve been able to find out, it&#8217;s generally better to get started on this sort of thing early. Alas, I seem to have a bit more generalized love of science than a focus on a specific topic, so finding the necessary focus needed for a doctoral program would be challenging.</p>
<p>It&#8217;s a bit of a long shot, but do any of you, the gentle reader, have any advice for a person such as myself? While comments are welcome, I&#8217;d really appreciate email, as it allows for me to respond more personally.</p>
<p>Thanks!</p>
<ol class="footnotes"><li id="footnote_0_1071" class="footnote">Physics? Engineering? I really enjoy science, particularly space science (as opposed to, say, quantum mechanics), rockets, etc. and would like to stay involved in related fields. </li></ol>]]></content:encoded>
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		<slash:comments>6</slash:comments>
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		<item>
		<title>Fun at Work</title>
		<link>http://www.arizonarifleman.com/2009/06/24/fun-at-work/</link>
		<comments>http://www.arizonarifleman.com/2009/06/24/fun-at-work/#comments</comments>
		<pubDate>Thu, 25 Jun 2009 00:57:29 +0000</pubDate>
		<dc:creator>Arizona Rifleman</dc:creator>
				<category><![CDATA[SCIENCE!]]></category>

		<guid isPermaLink="false">http://www.arizonarifleman.com/?p=1057</guid>
		<description><![CDATA[While the Epic Intercubicle Nerf Battle from two weeks ago was fun, my boss just informed us of an upcoming, interesting project: aerial photography.
We need to come up with effective ways to take photos from a long pole, a kite, and a balloon. These contraptions are to be constructed and provided to high school students [...]]]></description>
			<content:encoded><![CDATA[<p>While the Epic Intercubicle Nerf Battle from two weeks ago was fun, my boss just informed us of an upcoming, interesting project: aerial photography.</p>
<p>We need to come up with effective ways to take photos from a long pole, a kite, and a balloon. These contraptions are to be constructed and provided to high school students to do various observations around campus.</p>
<p>I never thought that IT work<sup>1</sup> would be this much fun.</p>
<ol class="footnotes"><li id="footnote_0_1057" class="footnote"> Hey, it helps pay the bills while I finish up my degree. </li></ol>]]></content:encoded>
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		<slash:comments>2</slash:comments>
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