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	<title>FORTH GO &#187; Nature</title>
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	<link>http://www.forthgo.com/blog</link>
	<description>Code and Recreations of Xan Gregg</description>
	<lastBuildDate>Wed, 14 Jul 2010 01:20:58 +0000</lastBuildDate>
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		<title>Minute of Zen: Gravel on Spider&#8217;s Thread</title>
		<link>http://www.forthgo.com/blog/2010/07/13/gravel-on-spiders-thread/</link>
		<comments>http://www.forthgo.com/blog/2010/07/13/gravel-on-spiders-thread/#comments</comments>
		<pubDate>Wed, 14 Jul 2010 01:15:49 +0000</pubDate>
		<dc:creator>xan</dc:creator>
				<category><![CDATA[Nature]]></category>

		<guid isPermaLink="false">http://www.forthgo.com/blog/?p=377</guid>
		<description><![CDATA[I saw this piece of pea gravel magically spinning in the air behind my house [YouTube].

It was about a foot off the ground then. When I returned later after forgetting about it, my head bumped into the gravel piece. A spider on the roof must have been trying to pull in the thread. I bet [...]]]></description>
			<content:encoded><![CDATA[<p>I saw this piece of pea gravel magically spinning in the air behind my house <a href="http://www.youtube.com/watch?v=utnx82HcsSs">[YouTube]</a>.</p>
<p><object width="425" height="268"><param name="movie" value="http://www.youtube.com/v/utnx82HcsSs&#038;hl=en&#038;fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/utnx82HcsSs&#038;hl=en&#038;fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="268"></embed></object></p>
<p>It was about a foot off the ground then. When I returned later after forgetting about it, my head bumped into the gravel piece. A spider on the roof must have been trying to pull in the thread. I bet he was getting tired.</p>
]]></content:encoded>
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		<slash:comments>3</slash:comments>
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		<item>
		<title>Rock Study at the Concrete Bridge</title>
		<link>http://www.forthgo.com/blog/2008/04/27/rock-study-at-the-concrete-bridge/</link>
		<comments>http://www.forthgo.com/blog/2008/04/27/rock-study-at-the-concrete-bridge/#comments</comments>
		<pubDate>Sun, 27 Apr 2008 23:08:09 +0000</pubDate>
		<dc:creator>xan</dc:creator>
				<category><![CDATA[Nature]]></category>

		<guid isPermaLink="false">http://www.forthgo.com/blog/2008/04/27/rock-study-at-the-concrete-bridge/</guid>
		<description><![CDATA[
Last fall, the powers that be at Duke Forest (presumably the Forestry department at Duke) re-positioned the rocks on the downstream side of the concrete bridge as shown in the first image. While New Hope Creek is usually gentle, I couldn&#8217;t imagine the piles holding up long during the heavy flow periods. The images below [...]]]></description>
			<content:encoded><![CDATA[<p><img src='http://www.forthgo.com/blog/wp-content/uploads/2008/04/bridge_rocks1.jpg' alt='Concrete bridge at Duke Forest, October 2007' /></p>
<p>Last fall, the powers that be at Duke Forest (presumably the Forestry department at Duke) re-positioned the rocks on the downstream side of the concrete bridge as shown in the first image. While New Hope Creek is usually gentle, I couldn&#8217;t imagine the piles holding up long during the heavy flow periods. The images below show the same view over the winter.</p>
<p>December:<br />
<img src='http://www.forthgo.com/blog/wp-content/uploads/2008/04/bridge_rocks2.jpg' alt='bConcrete bridge at Duke Forest, December 2007' /></p>
<p>January:<br />
<img src='http://www.forthgo.com/blog/wp-content/uploads/2008/04/bridge_rocks3.jpg' alt='Concrete bridge at Duke Forest, January 2008' /></p>
<p>February:<br />
<img src='http://www.forthgo.com/blog/wp-content/uploads/2008/04/bridge_rocks4.jpg' alt='Concrete bridge at Duke Forest, February 2008' /></p>
<p>Though the piles are lost, it&#8217;s interesting that the few big rocks held their approximate locations.</p>
<p>Here is a current image. It looks like a new arrangement is being tried.<br />
<img src='http://www.forthgo.com/blog/wp-content/uploads/2008/04/bridge_rocks5.jpg' alt='Concrete bridge at Duke Forest, April 2008' /></p>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>New Hope Creek Bottom Update</title>
		<link>http://www.forthgo.com/blog/2007/10/16/new-hope-creek-bottom-update/</link>
		<comments>http://www.forthgo.com/blog/2007/10/16/new-hope-creek-bottom-update/#comments</comments>
		<pubDate>Wed, 17 Oct 2007 01:18:50 +0000</pubDate>
		<dc:creator>xan</dc:creator>
				<category><![CDATA[Nature]]></category>

		<guid isPermaLink="false">http://www.forthgo.com/blog/2007/10/16/new-hope-creek-bottom-update/</guid>
		<description><![CDATA[With the drought continuing, a reader asked for an updated picture of the New Hope Creek &#8220;subflooring&#8221; I showed in August. The boards are completely dry now.

The water is at least a foot lower than before and the small pool in the background is about the only water in that section of the creek. Here [...]]]></description>
			<content:encoded><![CDATA[<p>With the drought continuing, a reader asked for an updated picture of the New Hope Creek &#8220;subflooring&#8221; I <a href="http://www.forthgo.com/blog/2007/08/06/new-hope-creek-bottom-at-johnstons-mill/">showed</a> in August. The boards are completely dry now.</p>
<p><a href='http://www.forthgo.com/blog/wp-content/uploads/2007/10/creekboards.JPG' title='New Hope Creek Bottom'><img src='http://www.forthgo.com/blog/wp-content/uploads/2007/10/creekboards.JPG' alt='New Hope Creek Bottom' /></a></p>
<p>The water is at least a foot lower than before and the small pool in the background is about the only water in that section of the creek. Here is the creek bed away from the dam site.</p>
<p><a href='http://www.forthgo.com/blog/wp-content/uploads/2007/10/creekbed.JPG' title='New Hope Creek Bed'><img src='http://www.forthgo.com/blog/wp-content/uploads/2007/10/creekbed.JPG' alt='New Hope Creek Bed' /></a></p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>New Hope Creek Bottom at Johnston&#8217;s Mill</title>
		<link>http://www.forthgo.com/blog/2007/08/06/new-hope-creek-bottom-at-johnstons-mill/</link>
		<comments>http://www.forthgo.com/blog/2007/08/06/new-hope-creek-bottom-at-johnstons-mill/#comments</comments>
		<pubDate>Tue, 07 Aug 2007 01:07:08 +0000</pubDate>
		<dc:creator>xan</dc:creator>
				<category><![CDATA[Nature]]></category>

		<guid isPermaLink="false">http://www.forthgo.com/blog/2007/08/06/new-hope-creek-bottom-at-johnstons-mill/</guid>
		<description><![CDATA[
It looks like it&#8217;s so dry that the sub-flooring of New Hope Creek is showing through, but it&#8217;s really the base of the old dam at Johnston&#8217;s Mill Nature Preserve.
]]></description>
			<content:encoded><![CDATA[<p><img src='http://www.forthgo.com/blog/wp-content/uploads/2007/08/enobottom.JPG' alt='Bottom of New Hope Creek at Johnstonâ€™s Mill' /></p>
<p>It looks like it&#8217;s so dry that the sub-flooring of <a href="http://en.wikipedia.org/wiki/New_Hope_Creek">New Hope Creek</a> is showing through, but it&#8217;s really the base of the old dam at <a href="http://www.tlc-nc.org/lands/tlc/johnston_mill_np.shtml">Johnston&#8217;s Mill Nature Preserve</a>.</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Ivy vs. Vinca</title>
		<link>http://www.forthgo.com/blog/2007/04/15/ivy-vs-vinca/</link>
		<comments>http://www.forthgo.com/blog/2007/04/15/ivy-vs-vinca/#comments</comments>
		<pubDate>Sun, 15 Apr 2007 20:20:16 +0000</pubDate>
		<dc:creator>xan</dc:creator>
				<category><![CDATA[Nature]]></category>

		<guid isPermaLink="false">http://www.forthgo.com/blog/2007/04/15/ivy-vs-vinca/</guid>
		<description><![CDATA[
Most of our yard is covered in ivy. It makes a nice green ground cover, and we just have to trim it back from trees, beds, and paths a few times a year, which is a lot easier than mowing grass every week. Vinca is a little more insidious, so I try to remove it [...]]]></description>
			<content:encoded><![CDATA[<p><img src='/blog/wp-content/uploads/2007/04/ivy_vs_vinca.JPG' alt='Ivy Versus Vinca' /></p>
<p>Most of our yard is covered in ivy. It makes a nice green ground cover, and we just have to trim it back from trees, beds, and paths a few times a year, which is a lot easier than mowing grass every week. Vinca is a little more insidious, so I try to remove it entirely when it shows up in flower beds. </p>
<p>When I saw some vinca in the ivy a couple years ago, I decided to let them fight it out. I thought the ivy had won a while back, but it must have been a seasonal surge. Now it looks like the vinca is not only holding its own but has spread out within the ivy. </p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Foreground Removal with Photoshop</title>
		<link>http://www.forthgo.com/blog/2007/03/21/foreground-removal-with-photoshop/</link>
		<comments>http://www.forthgo.com/blog/2007/03/21/foreground-removal-with-photoshop/#comments</comments>
		<pubDate>Wed, 21 Mar 2007 23:10:45 +0000</pubDate>
		<dc:creator>xan</dc:creator>
				<category><![CDATA[Nature]]></category>

		<guid isPermaLink="false">http://www.forthgo.com/blog/2007/03/21/foreground-removal-with-photoshop/</guid>
		<description><![CDATA[


While walking in Duke Forest, I took a series of photos of this stone wall from slightly different vantage points. The idea was that I could then overlay the images in Photoshop and keep the good parts of each one, removing the foreground small trees and branches.



It worked OK once I got the hang of [...]]]></description>
			<content:encoded><![CDATA[<p><img src='http://www.forthgo.com/blog/wp-content/uploads/2007/03/original.jpg' alt='Stone Wall original' /><br />
<br clear='all'/></p>
<p>
While walking in Duke Forest, I took a series of photos of this stone wall from slightly different vantage points. The idea was that I could then overlay the images in Photoshop and keep the good parts of each one, removing the foreground small trees and branches.</p>
<p>
<img src='http://www.forthgo.com/blog/wp-content/uploads/2007/03/cleaned.jpg' alt='Stone Wall cleaned' />
</p>
<p>It worked OK once I got the hang of layers, but there were still a couple of problems. Some of the vantage points were too different &#8212; I needed to be more careful about keeping the angles parallel. The other problem was that some rock parts were covered in all of the photos, so I had to fill in that area from other parts of the wall.</p>
<p><a href="http://www.billpong.com/">Bill</a> tells me that&#8217;s what I should have done in the first place &#8212; just take one photo and use fake/duplicated rocks to replace the foreground material. My way seems more honest, even though the cleaned up image is still a fake.</p>
]]></content:encoded>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Backyard Deer</title>
		<link>http://www.forthgo.com/blog/2007/02/20/backyard-deer/</link>
		<comments>http://www.forthgo.com/blog/2007/02/20/backyard-deer/#comments</comments>
		<pubDate>Wed, 21 Feb 2007 00:00:05 +0000</pubDate>
		<dc:creator>xan</dc:creator>
				<category><![CDATA[Nature]]></category>

		<guid isPermaLink="false">http://www.forthgo.com/blog/2007/02/20/backyard-deer/</guid>
		<description><![CDATA[A couple of deer photos from the backyard. They&#8217;re pretty brave until the camera comes out.
  
]]></description>
			<content:encoded><![CDATA[<p>A couple of deer photos from the backyard. They&#8217;re pretty brave until the camera comes out.</p>
<p><img alt="deerstandoff.jpg" id="image164" src="http://www.forthgo.com/blog/wp-content/uploads/2007/02/deerstandoff.jpg" /> <br clear="all" /> <img alt="Deer Running" id="image165" src="http://www.forthgo.com/blog/wp-content/uploads/2007/02/deerrunning.jpg" /><br clear="all" /></p>
]]></content:encoded>
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