<story><title>Why are submarines demagnetized?</title><url>http://qi.epfl.ch/en/sondage/show/255/</url></story><parent_chain><item><author>zymhan</author><text>4,000 Amps is a ridiculous amount of current. Though when you have a nuclear power plant nearby...&lt;p&gt;Also, this line made me shudder:&lt;p&gt;&amp;gt; &amp;quot;...stringing an electric cable the length of the ship and pulsing 2,000 amps through the cable.&amp;quot;&lt;p&gt;EDIT: Okay maybe not that ridiculous, apparently the Luxor hotel has higher-amp lightbulbs &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;www.wolframalpha.com&amp;#x2F;input&amp;#x2F;?i=4000+amps&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;www.wolframalpha.com&amp;#x2F;input&amp;#x2F;?i=4000+amps&lt;/a&gt;</text></item></parent_chain><comment><author>brandmeyer</author><text>The degaussing facility uses shore power.  They could mean 4000 ampere-turns, too.&lt;p&gt;Source: I went through one of these back in the day.</text></comment>
<story><title>Why are submarines demagnetized?</title><url>http://qi.epfl.ch/en/sondage/show/255/</url></story><parent_chain><item><author>zymhan</author><text>4,000 Amps is a ridiculous amount of current. Though when you have a nuclear power plant nearby...&lt;p&gt;Also, this line made me shudder:&lt;p&gt;&amp;gt; &amp;quot;...stringing an electric cable the length of the ship and pulsing 2,000 amps through the cable.&amp;quot;&lt;p&gt;EDIT: Okay maybe not that ridiculous, apparently the Luxor hotel has higher-amp lightbulbs &lt;a href=&quot;http:&amp;#x2F;&amp;#x2F;www.wolframalpha.com&amp;#x2F;input&amp;#x2F;?i=4000+amps&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;www.wolframalpha.com&amp;#x2F;input&amp;#x2F;?i=4000+amps&lt;/a&gt;</text></item></parent_chain><comment><author>centizen</author><text>It might still be a little ridiculous - that light is one of the most powerful in the entire world</text></comment>