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	<title>PASSIONATELY CURIOUS - Sebastian Martin, PhD &#187; Light Traces</title>
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	<link>http://apps.exploratorium.edu/blogs/sebastianm</link>
	<description>My hands-on science at the Exploratorium, San Francisco.</description>
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		<title>A different physics class</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2008/09/15/a-different-physics-class/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2008/09/15/a-different-physics-class/#comments</comments>
		<pubDate>Mon, 15 Sep 2008 19:24:21 +0000</pubDate>
		<dc:creator>Sebastian Martin</dc:creator>
				<category><![CDATA[Light Traces]]></category>
		<category><![CDATA[Workshops for Teachers]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2008/09/15/a-different-physics-class/</guid>
		<description><![CDATA[







Bree Barnett just shared her amazing pictures of a class of &#8220;Light Traces&#8221; with us. Her photos are a stunning combination of art and physics experiments. The beautiful lines of light carry a full description of the physical motion (translation and rotation) of the object as it moved through space in one single image. Click [...]]]></description>
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<td><a href="http://www.flickr.com/photos/30394012@N05/"><img src="http://lh6.ggpht.com/SebastianExplo/SM62xg6BG0I/AAAAAAAAAhI/8bMqr8Wp8ts/s400/2848827861_9eac76e195_b.jpg" /></a></td>
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<p><span id="more-58"></span>Bree Barnett just shared her amazing pictures of a class of &#8220;Light Traces&#8221; with us. Her photos are a stunning combination of art and physics experiments. The beautiful lines of light carry a full description of the physical motion (translation and rotation) of the object as it moved through space in one single image. Click on the photo to see more.</p>
<p>She and her students used LED lights to visualize experiments on kinetics.  By taking long-exposure pictures of  moving objects with lights they manage to visualize the path of motion.</p>
<p>&#8220;Light Traces&#8221; is a hands-on teaching activity that was developed by Sebastian Martin, inspired by Light Painting from the <a href="http://www.exploratorium.edu/pie"> PIE </a> group.</p>
<p>Read detailed <a href="http://www.exo.net/~bastian/LEDphotography.doc">instructions</a> or  look at a <a href="http://www.flickr.com/photos/89476186@N00/sets/72157600356697502/"> picture gallery </a>.</p>
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		<slash:comments>1</slash:comments>
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		<title>New Light Traces</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2007/09/18/new-light-traces/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2007/09/18/new-light-traces/#comments</comments>
		<pubDate>Tue, 18 Sep 2007 16:06:44 +0000</pubDate>
		<dc:creator>Sebastian Martin</dc:creator>
				<category><![CDATA[Light Traces]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2007/09/18/new-light-traces/</guid>
		<description><![CDATA[Noel came in for a Light Traces session this weekend. After experimenting with light traces for a long time I was excited to work with a  POI artist! He is also a math teacher and I learned to know him through our hands-on teacher workshops here at the Explo.  
Have a look at [...]]]></description>
			<content:encoded><![CDATA[<p>Noel came in for a Light Traces session this weekend. After experimenting with light traces for a long time I was excited to work with a <a href="http://en.wikipedia.org/wiki/Poi_%28juggling%29"> POI</a> artist! He is also a math teacher and I learned to know him through our hands-on teacher workshops here at the Explo.  </p>
<p>Have a look at the first pictures we did (on flickr). The theme is &#8220;geometry&#8221; &#8211; which is also the topic of the <a href="http://apps.exploratorium.edu/blogs/sebastianm/category/geometry-playground/">exhibits</a> I am currently working on. Click on the picture to see more samples and instructions:<br />
<a href="http://www.flickr.com/photos/89476186@N00/sets/72157600356697502/" title="Photo Sharing"><img src="http://farm2.static.flickr.com/1379/1391830739_97dea8d976_o.jpg" width="150" height="200" alt="Noel doing light traces" /></a><a href="http://www.flickr.com/photos/89476186@N00/sets/72157600356697502/" title="Photo Sharing"><img src="http://farm2.static.flickr.com/1202/1402192995_c77ae5fd59_o.jpg" width="275" height="200" alt="P1020830" /></a></p>
<p>Want more?<br />
A while ago I did &#8220;Light Traces of Baseball&#8221;  with Amy Snyder, a professional Photographer! Here is another Flickr Set: <a href="http://www.flickr.com/photos/89476186@N00/sets/72157594539823950/">Light Traces of Baseball</a>. Enjoy.</p>
<p><a href="http://technorati.com/claim/9wzcrhg54" rel="me">Technorati Profile</a></p>
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			<wfw:commentRss>http://apps.exploratorium.edu/blogs/sebastianm/2007/09/18/new-light-traces/feed/</wfw:commentRss>
		<slash:comments>4</slash:comments>
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		<title>Exploratorium Baseball in SF Chronicle</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2007/07/09/exploratorium-baseball-in-sf-chronicle/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2007/07/09/exploratorium-baseball-in-sf-chronicle/#comments</comments>
		<pubDate>Mon, 09 Jul 2007 16:42:00 +0000</pubDate>
		<dc:creator>Sebastian Martin</dc:creator>
				<category><![CDATA[Light Traces]]></category>
		<category><![CDATA[Science Snacks]]></category>
		<category><![CDATA[Science of Baseball]]></category>
		<category><![CDATA[Workshops for Teachers]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2007/07/09/exploratorium-baseball-in-sf-chronicle/</guid>
		<description><![CDATA[                        
The Light Traces I did together with Amy Snyder are featured in the San Francisco Chronicle today (06/09/07)! The front page article talks about the science of pitching and has a [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/07/09/MNGTDQT9H81.DTL" target="_blank"><img src="http://bp2.blogger.com/_dfen4FGlt6Y/RpJaMxhr0qI/AAAAAAAAABc/Fx24Ik2BgoA/s320/ba_asg09_pitchingscience_ph005.jpg" alt="" border="0" /></a><br />                        <strong></strong><strong></p>
<p>The Light Traces I did together with Amy Snyder are featured in the San Francisco Chronicle today (06/09/07)! The front page article talks about the science of pitching and has a few cool and definitely funny light traces pictures in it! Here is the link: <a href="http://sfgate.com/cgi-bin/article.cgi?file=/c/a/2007/07/09/MNGTDQT9H81.DTL" target="_blank">A neophyte takes on the science of pitching </a></p>
<p>Have a look at our Light Traces of Baseball featuring Dave Barker (he is my coach).<a href="http://www.flickr.com/photos/89476186@N00/sets/72157594539823950/" target="_blank" title="Photo Sharing">Baseball gallery</a></p>
<p>Read more: <a href="http://www.flickr.com/groups/scienceofbaseball">How to make Light Traces</a><br /></strong><strong></strong></p>
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			<wfw:commentRss>http://apps.exploratorium.edu/blogs/sebastianm/2007/07/09/exploratorium-baseball-in-sf-chronicle/feed/</wfw:commentRss>
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		<title>Summer Institute 2007 Motion-mania</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2007/07/01/summer-institute-2007-motion-mania/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2007/07/01/summer-institute-2007-motion-mania/#comments</comments>
		<pubDate>Sun, 01 Jul 2007 16:44:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Light Traces]]></category>
		<category><![CDATA[Science Snacks]]></category>
		<category><![CDATA[Summerinstitute]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2007/07/01/summer-institute-2007-motion-mania/</guid>
		<description><![CDATA[Blinkies in the Physics Summer Institute. Click on the Photos, and the first video(!) of Light Traces or download the Hand-out .There is also a FLICKR PICTURE GALLERY  
Video of backward spinning wheel with two LEDs

Thanks for experimenting with us!
]]></description>
			<content:encoded><![CDATA[<p>Blinkies in the Physics Summer Institute. Click on the Photos, and the first video(!) of Light Traces or download the <a href="http://www.exo.net/~bastian/LEDphotography.doc" target="_blank">Hand-out </a>.<br />There is also a <a href="http://www.flickr.com/photos/89476186@N00/collections/72157600596419770/" target="_blank">FLICKR PICTURE GALLERY </a> </p>
<p>Video of backward spinning wheel with two LEDs</p>
<p><a href="http://www.flickr.com/photos/89476186@N00/collections/72157600596419770/" target="_blank" title="Photo Sharing"><img src="http://farm2.static.flickr.com/1313/691007420_43993c69f7_o.jpg" width="260" height="200" alt="wheel" /></a></p>
<p>Thanks for experimenting with us!</p>
]]></content:encoded>
			<wfw:commentRss>http://apps.exploratorium.edu/blogs/sebastianm/2007/07/01/summer-institute-2007-motion-mania/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<title>Free fall</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2007/06/28/free-fall/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2007/06/28/free-fall/#comments</comments>
		<pubDate>Thu, 28 Jun 2007 14:02:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Light Traces]]></category>
		<category><![CDATA[Science Snacks]]></category>
		<category><![CDATA[Summerinstitute]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2007/06/28/free-fall/</guid>
		<description><![CDATA[        
Does gravity pull equally on heavy and light objects? &#8211;  A free fall experiment done with only a camera and a pulsed LED light. How to&#8230;Find more light traces in this gallery:

]]></description>
			<content:encoded><![CDATA[<div> <a href="http://www.flickr.com/photos/89476186@N00/648728217/" title="photo sharing"><img src="http://farm2.static.flickr.com/1016/648728217_4be475ed24_m.jpg" alt="" /></a> <br /> <span>  <a href="http://www.flickr.com/photos/89476186@N00/648728217/"></a>  <br /> </span></div>
<p>Does gravity pull equally on heavy and light objects? &#8211;  A free fall experiment done with only a camera and a pulsed LED light. <a href="http://www.exo.net/~bastian/LEDphotography.doc" target="_blank">How to&#8230;</a><br />Find more light traces in this gallery:</p>
<p><a href="http://www.flickr.com/photos/89476186@N00/sets/72157600356697502/" target="_blank" title="Photo Sharing"><img src="http://farm1.static.flickr.com/177/385067551_b760962ae2_o.jpg" width="205" height="142" alt="Exploratorium exhibit1" /></a></p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Exploratorium Quarterly &#8211; Baseball</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2007/06/13/exploratorium-quarterly-baseball/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2007/06/13/exploratorium-quarterly-baseball/#comments</comments>
		<pubDate>Wed, 13 Jun 2007 16:42:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Light Traces]]></category>
		<category><![CDATA[Science Snacks]]></category>
		<category><![CDATA[Science of Baseball]]></category>
		<category><![CDATA[Workshops for Teachers]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2007/06/13/exploratorium-quarterly-baseball/</guid>
		<description><![CDATA[                        Baseball is the focus of the next Exploratorium Quarterly (July 2007)! Have a look at Light Traces of Baseball featuring Dave Barker (he is the explOratorium&#8217;s baseball expert). 
Read more: How [...]]]></description>
			<content:encoded><![CDATA[<p>                        <strong></strong><strong>Baseball is the focus of the next Exploratorium Quarterly (July 2007)! Have a look at Light Traces of Baseball featuring Dave Barker (he is the explOratorium&#8217;s baseball expert). <br /><a href="http://www.flickr.com/photos/89476186@N00/sets/72157594539823950/" target="_blank" title="Photo Sharing"><img src="http://farm1.static.flickr.com/174/400170086_78f1116ced_m.jpg" alt="Curveball" height="168" width="240" /></a></p>
<p>Read more: <a href="http://www.flickr.com/groups/scienceofbaseball">How to make Light Traces</a><br /></strong><strong></strong></p>
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			<wfw:commentRss>http://apps.exploratorium.edu/blogs/sebastianm/2007/06/13/exploratorium-quarterly-baseball/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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		<item>
		<title>Science of Baseball</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2007/02/28/science-of-baseball/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2007/02/28/science-of-baseball/#comments</comments>
		<pubDate>Wed, 28 Feb 2007 06:25:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Light Traces]]></category>
		<category><![CDATA[Science Snacks]]></category>
		<category><![CDATA[Science of Baseball]]></category>
		<category><![CDATA[Workshops for Teachers]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2007/02/28/science-of-baseball/</guid>
		<description><![CDATA[                        The Teacher workshop Science of Baseball  (02/24) was a lot of fun. Have a look at more pictures on Flickr:
]]></description>
			<content:encoded><![CDATA[<p>                        <strong></strong><strong>The Teacher workshop <a href="http://www.flickr.com/groups/scienceofbaseball">Science of Baseball</a>  (02/24) was a lot of fun. Have a look at more pictures on Flickr:<br /><a href="http://www.flickr.com/groups/scienceofbaseball" title="Photo Sharing"><img src="http://farm1.static.flickr.com/174/400170086_78f1116ced_m.jpg" alt="Curveball" height="168" width="240" /></a><br /></strong><strong></strong></p>
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		<title>Christmas Lights</title>
		<link>http://apps.exploratorium.edu/blogs/sebastianm/2007/02/26/christmas-lights/</link>
		<comments>http://apps.exploratorium.edu/blogs/sebastianm/2007/02/26/christmas-lights/#comments</comments>
		<pubDate>Mon, 26 Feb 2007 06:26:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Light Traces]]></category>
		<category><![CDATA[Physics and Music]]></category>
		<category><![CDATA[Science Snacks]]></category>

		<guid isPermaLink="false">http://apps.exploratorium.edu/blogs/sebastianm/2007/02/26/christmas-lights/</guid>
		<description><![CDATA[                        There are new photos of &#8220;Physics and Music&#8221; on Flickr, the class I am co-teaching in Berkeley:Photos of Harmonics. Photos by Andrew, Glory, and Steve  
]]></description>
			<content:encoded><![CDATA[<p>                        <strong>There are new photos of &#8220;Physics and Music&#8221; on Flickr, the class I am co-teaching in Berkeley:<br /><a href="http://www.flickr.com/photos/89476186@N00/sets/72157594539825534/">Photos of Harmonics</a>. Photos by Andrew, Glory, and Steve  </strong><strong></strong></p>
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