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	<id>http://emdrive.echothis.com/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Johnny+tsunami</id>
	<title>EM Drive - User contributions [en]</title>
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	<updated>2026-09-10T03:34:27Z</updated>
	<subtitle>User contributions</subtitle>
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	<entry>
		<id>http://emdrive.echothis.com/index.php?title=Theory&amp;diff=31</id>
		<title>Theory</title>
		<link rel="alternate" type="text/html" href="http://emdrive.echothis.com/index.php?title=Theory&amp;diff=31"/>
		<updated>2015-05-05T04:00:22Z</updated>

		<summary type="html">&lt;p&gt;Johnny tsunami: /* Expirimental error */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;This page will outline some candidate theories of operation (or non-operation).&lt;br /&gt;
&lt;br /&gt;
== Debunking Theories ==&lt;br /&gt;
*These theories should be explained, then debunked with the simplest explantion, with a link to a dedicated page to show the work or work in progress that backs up that explanantion.&lt;br /&gt;
&lt;br /&gt;
=== Expirimental error ===&lt;br /&gt;
* It's all a hoax/conspiracy&lt;br /&gt;
* Simple measuring error&lt;br /&gt;
* Thermal effects&lt;br /&gt;
* Mechanical vibration&lt;br /&gt;
* Magnetic effects with enviroment&lt;br /&gt;
&lt;br /&gt;
=== Proponent Theories ===&lt;br /&gt;
* Cannae Drive creator's Theory&lt;br /&gt;
* Em Drive creator's theory&lt;br /&gt;
* Quantum foam MHD&lt;br /&gt;
* Conservation of momentum breaking theories&lt;br /&gt;
**this deserves an entire subsection&lt;br /&gt;
* Warp effects&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
8/5/14 - Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html modeled the resonant modes of a conical cavity].&lt;br /&gt;
&lt;br /&gt;
2/2/15 - @areo [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP].  Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/div&gt;</summary>
		<author><name>Johnny tsunami</name></author>
	</entry>
	<entry>
		<id>http://emdrive.echothis.com/index.php?title=Theory&amp;diff=30</id>
		<title>Theory</title>
		<link rel="alternate" type="text/html" href="http://emdrive.echothis.com/index.php?title=Theory&amp;diff=30"/>
		<updated>2015-05-05T03:58:37Z</updated>

		<summary type="html">&lt;p&gt;Johnny tsunami: /* Crackpot Theories */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;This page will outline some candidate theories of operation (or non-operation).&lt;br /&gt;
&lt;br /&gt;
== Debunking Theories ==&lt;br /&gt;
*These theories should be explained, then debunked with the simplest explantion, with a link to a dedicated page to show the work or work in progress that backs up that explanantion.&lt;br /&gt;
&lt;br /&gt;
=== Expirimental error ===&lt;br /&gt;
* It's all a hoax/conspiracy&lt;br /&gt;
* Simple measuring error&lt;br /&gt;
* Thermal effects&lt;br /&gt;
* Mechanical vibration&lt;br /&gt;
* Magnetic effects with enviroment&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;Insert non-formatted text here&amp;lt;/nowiki&amp;gt;=== Proponent Theories ===&lt;br /&gt;
* Cannae Drive creator's Theory&lt;br /&gt;
* Em Drive creator's theory&lt;br /&gt;
* Quantum foam MHD&lt;br /&gt;
* Conservation of momentum breaking theories&lt;br /&gt;
**this deserves an entire subsection&lt;br /&gt;
* Warp effects&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
8/5/14 - Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html modeled the resonant modes of a conical cavity].&lt;br /&gt;
&lt;br /&gt;
2/2/15 - @areo [http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP].  Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.&lt;/div&gt;</summary>
		<author><name>Johnny tsunami</name></author>
	</entry>
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