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	<title>Comments on: Radio&#8217;s Revenge!</title>
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	<description>A collection of Damn Interesting things</description>
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		<title>By: ZAP</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-22698</link>
		<dc:creator>ZAP</dc:creator>
		<pubDate>Thu, 11 Sep 2008 00:39:50 +0000</pubDate>
		<guid isPermaLink="false">#comment-22698</guid>
		<description>[quote]scottmcl said: &quot;Wasn&#039;t there some sort of EMP device used in the current Iraq war?  I swear I heard something about that.&quot;[/quote]
to answer your question over two years later:
Yes, but not an EMP weapon, it was(is) a bomb which is directed against power plants and facilities which explodes into cloud of conductive graphite particles, effectively shorting out the facility. It was actually first used in Bosnia against facilities there, but was used again in the &quot;shock and awe&quot; portion of the Iraq invasion. BTW, my first post after lurking all these years. :)</description>
		<content:encoded><![CDATA[<p>[quote]scottmcl said: &#8220;Wasn&#8217;t there some sort of EMP device used in the current Iraq war?  I swear I heard something about that.&#8221;[/quote]<br />
to answer your question over two years later:<br />
Yes, but not an EMP weapon, it was(is) a bomb which is directed against power plants and facilities which explodes into cloud of conductive graphite particles, effectively shorting out the facility. It was actually first used in Bosnia against facilities there, but was used again in the &#8220;shock and awe&#8221; portion of the Iraq invasion. BTW, my first post after lurking all these years. :)</p>
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		<title>By: jddes</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-11047</link>
		<dc:creator>jddes</dc:creator>
		<pubDate>Thu, 14 Dec 2006 07:05:28 +0000</pubDate>
		<guid isPermaLink="false">#comment-11047</guid>
		<description>&lt;p&gt;I don&#039;t want to sound like a smart ass, but I think some misinformed comments about eletromagnetism were made that I will try to set straight.  I might be wrong on some issues and I&#039;m willing to discuss it.  Surely some readers must be more qualified than me on the matter and I&#039;m suprised someone didn&#039;t comment on this before.  So here it is:&lt;/p&gt;&lt;p&gt;Electromagnetic waves have a really hard time penetrating conductors.  Most of the energy is simply reflected.  The better the conductor, the less energy is transmitted (rather than reflected).  The transmission coefficient is also a function of frequency.  There is no need to ground the conductor as was mentionned.  I&#039;m pretty sure every single satelite in orbit has a layer of conducting material,  to protect it from radiation coming from space.  Especially radiation from the Sun.  Then, an EMP or any electromagnetic wave for that matter would not penetrate a satellite in any significant way, except from it&#039;s antenna(s).  Then it could potentially fry the circuits inside, if the power is strong enough.  I really doubt that you could collimate enough energy to fry anything in such low frequencies as microwaves at such long distances, although a laser might achieve it.  Even then, you would need some mean of entering the satelite &quot;shell&quot; to cause any damage.  Perhaps spy satelites with optic system could be rendered useless that way... &lt;/p&gt;</description>
		<content:encoded><![CDATA[<p>I don&#8217;t want to sound like a smart ass, but I think some misinformed comments about eletromagnetism were made that I will try to set straight.  I might be wrong on some issues and I&#8217;m willing to discuss it.  Surely some readers must be more qualified than me on the matter and I&#8217;m suprised someone didn&#8217;t comment on this before.  So here it is:</p>
<p>Electromagnetic waves have a really hard time penetrating conductors.  Most of the energy is simply reflected.  The better the conductor, the less energy is transmitted (rather than reflected).  The transmission coefficient is also a function of frequency.  There is no need to ground the conductor as was mentionned.  I&#8217;m pretty sure every single satelite in orbit has a layer of conducting material,  to protect it from radiation coming from space.  Especially radiation from the Sun.  Then, an EMP or any electromagnetic wave for that matter would not penetrate a satellite in any significant way, except from it&#8217;s antenna(s).  Then it could potentially fry the circuits inside, if the power is strong enough.  I really doubt that you could collimate enough energy to fry anything in such low frequencies as microwaves at such long distances, although a laser might achieve it.  Even then, you would need some mean of entering the satelite &#8220;shell&#8221; to cause any damage.  Perhaps spy satelites with optic system could be rendered useless that way&#8230; </p>
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		<title>By: eatmydust57</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-10712</link>
		<dc:creator>eatmydust57</dc:creator>
		<pubDate>Sat, 02 Dec 2006 14:18:11 +0000</pubDate>
		<guid isPermaLink="false">#comment-10712</guid>
		<description>&lt;p&gt;go to hell&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p>go to hell</p>
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		<title>By: Tink</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-9682</link>
		<dc:creator>Tink</dc:creator>
		<pubDate>Tue, 31 Oct 2006 09:31:44 +0000</pubDate>
		<guid isPermaLink="false">#comment-9682</guid>
		<description>&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;Griffin said: &quot;Well it appears most people missed the point of the article. Everyone got wrapped up in looking at HAARP as a secret weapon. It surely can be used as a weapon but whats the point? Its like saying we have invented a new gun. Its a .39 caliber to replace the .38 caliber! WooohOO. Your missing the boat.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;And boat is a good analogy. The HAARP facilities are similar to boats. There are many types of boats that ply the ocean. Shrimp boats, speed boats, sail boats and Destroyers. There are military boats and there are public boats…. But what is the one thing all boats have in common????&quot;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;

My guess would be that they all float, for a while any way. ;)
&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p><span class='quote'>Griffin said: &#8220;Well it appears most people missed the point of the article. Everyone got wrapped up in looking at HAARP as a secret weapon. It surely can be used as a weapon but whats the point? Its like saying we have invented a new gun. Its a .39 caliber to replace the .38 caliber! WooohOO. Your missing the boat.</span></p>
<p><span class='quote'>And boat is a good analogy. The HAARP facilities are similar to boats. There are many types of boats that ply the ocean. Shrimp boats, speed boats, sail boats and Destroyers. There are military boats and there are public boats…. But what is the one thing all boats have in common????&#8221;</span></p>
<p>My guess would be that they all float, for a while any way. ;)</p>
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		<title>By: Griffin</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-8497</link>
		<dc:creator>Griffin</dc:creator>
		<pubDate>Thu, 07 Sep 2006 16:35:21 +0000</pubDate>
		<guid isPermaLink="false">#comment-8497</guid>
		<description>&lt;p&gt;Well it appears most people missed the point of the article. Everyone got wrapped up in looking at HAARP as a secret weapon.  It surely can be used as a weapon but whats the point? Its like saying we have invented a new gun. Its a .39 caliber to replace the .38 caliber! WooohOO.  Your missing the boat.
And boat is a good analogy. The HAARP facilities are similar to boats. There are many types of boats that ply the ocean. Shrimp boats, speed boats, sail boats and Destroyers.  There are military boats and there are public boats.... But what is the one thing all boats have in common????&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p>Well it appears most people missed the point of the article. Everyone got wrapped up in looking at HAARP as a secret weapon.  It surely can be used as a weapon but whats the point? Its like saying we have invented a new gun. Its a .39 caliber to replace the .38 caliber! WooohOO.  Your missing the boat.<br />
And boat is a good analogy. The HAARP facilities are similar to boats. There are many types of boats that ply the ocean. Shrimp boats, speed boats, sail boats and Destroyers.  There are military boats and there are public boats&#8230;. But what is the one thing all boats have in common????</p>
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		<title>By: A say, no need S</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-7367</link>
		<dc:creator>A say, no need S</dc:creator>
		<pubDate>Thu, 20 Jul 2006 09:16:35 +0000</pubDate>
		<guid isPermaLink="false">#comment-7367</guid>
		<description>&lt;p&gt;let north korea launch missile to hit in MOSCOW, IRAN / IRAQ, CHINA,,,&lt;/p&gt;&lt;p&gt;let china launch missile to hit in MOSCOW, IRAN / IRAQ, NORTH KOREA,,,
let iran / iraq launch missile to hit in MOSCOW, NORTH KOREA, CHINA,,,
let moscow launch missile to hit russia&#039; s own land of ussr russia MOSCOW, NORTH KOREA, CHINA, IRAN / IRAQ,,,

LET AMERICA KEEP WATCH OUT THE WORLD ENEMY MISSILES,,,
LET AMERICA MAKE MORE SDIs ( STAR WARS LASER WEAPON OUTER SPACE ),,,
LET AMERICA MAKE MORE POWER MX MISSILES TO HIT IN MOSCOW, IRAN / IRAQ, CHINA, NORTH KOREA,,,

people around the world,,,
please read this message,,,
DO NOT GO TO CHINA OLYMPICS IN 2008,,,
yes time is boycott,,,
BOYCOTT, BOYCOTT, BOYCOTT,,,
let forget it about china olympics,,,
china olympics are NOT worth it,,,

AMERICANS PEOPLE AND PEOPLE ALL OVER THE WORLD, 
DO NOT GO VISIT IN USSR RUSSIA,,,
USSR RUSSIA DID HELP ALOT TO CHINA, CUBA, INDIA, IRAN / IRAQ, NORTH KOREA 
ABOUT ANTI- AMERICA,,,YES RUSSIA DID THAT,,,
RUSSIA ALWAYS COPY, STEAL, COPY, STEAL FROM AMERICA IDEA,,,
RUSSIA IS A EVIL EMPIRE COUNTRY AND LEADER OF TROUBLEMAKER 
IN THE WORLD,,,RUSSIA IS A NO - LIFE,,, 

AMERICAN BILL GATES AS MICROSOFT COMPUTER COMPANY, 
DO NOT SEND SELL MICROSOFT WINDOWS COMPUTERS TO CHINA, CUBA, USSR RUSSIA, 
INDIA, IRAN / IRAQ, NORTH KOREA,,,&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p>let north korea launch missile to hit in MOSCOW, IRAN / IRAQ, CHINA,,,</p>
<p>let china launch missile to hit in MOSCOW, IRAN / IRAQ, NORTH KOREA,,,<br />
let iran / iraq launch missile to hit in MOSCOW, NORTH KOREA, CHINA,,,<br />
let moscow launch missile to hit russia&#8217; s own land of ussr russia MOSCOW, NORTH KOREA, CHINA, IRAN / IRAQ,,,</p>
<p>LET AMERICA KEEP WATCH OUT THE WORLD ENEMY MISSILES,,,<br />
LET AMERICA MAKE MORE SDIs ( STAR WARS LASER WEAPON OUTER SPACE ),,,<br />
LET AMERICA MAKE MORE POWER MX MISSILES TO HIT IN MOSCOW, IRAN / IRAQ, CHINA, NORTH KOREA,,,</p>
<p>people around the world,,,<br />
please read this message,,,<br />
DO NOT GO TO CHINA OLYMPICS IN 2008,,,<br />
yes time is boycott,,,<br />
BOYCOTT, BOYCOTT, BOYCOTT,,,<br />
let forget it about china olympics,,,<br />
china olympics are NOT worth it,,,</p>
<p>AMERICANS PEOPLE AND PEOPLE ALL OVER THE WORLD,<br />
DO NOT GO VISIT IN USSR RUSSIA,,,<br />
USSR RUSSIA DID HELP ALOT TO CHINA, CUBA, INDIA, IRAN / IRAQ, NORTH KOREA<br />
ABOUT ANTI- AMERICA,,,YES RUSSIA DID THAT,,,<br />
RUSSIA ALWAYS COPY, STEAL, COPY, STEAL FROM AMERICA IDEA,,,<br />
RUSSIA IS A EVIL EMPIRE COUNTRY AND LEADER OF TROUBLEMAKER<br />
IN THE WORLD,,,RUSSIA IS A NO &#8211; LIFE,,, </p>
<p>AMERICAN BILL GATES AS MICROSOFT COMPUTER COMPANY,<br />
DO NOT SEND SELL MICROSOFT WINDOWS COMPUTERS TO CHINA, CUBA, USSR RUSSIA,<br />
INDIA, IRAN / IRAQ, NORTH KOREA,,,</p>
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		<title>By: Fishindog</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-7287</link>
		<dc:creator>Fishindog</dc:creator>
		<pubDate>Mon, 17 Jul 2006 06:04:10 +0000</pubDate>
		<guid isPermaLink="false">#comment-7287</guid>
		<description>&lt;p&gt;Great Article.&lt;/p&gt;&lt;p&gt;&lt;a href=&quot;http://www.fishindog.com&quot; rel=&quot;nofollow&quot;&gt;Fishin Dog&lt;/a&gt;&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p>Great Article.</p>
<p><a href="http://www.fishindog.com" rel="nofollow">Fishin Dog</a></p>
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		<title>By: ChickenHead</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-7181</link>
		<dc:creator>ChickenHead</dc:creator>
		<pubDate>Wed, 12 Jul 2006 20:51:52 +0000</pubDate>
		<guid isPermaLink="false">#comment-7181</guid>
		<description>&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;Byrden said: &quot;&gt;&gt; &quot;Most are geosynchronous, which mean they move over face of the earth in a pattern that repeats once per day. &quot;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;Actually, it means they don&#039;t move at all over the face of the earth. They stay permanently above the same spot as it rotates.
&lt;/span&gt;&lt;/p&gt;&lt;p&gt;A Geostationary satellite is what you have described - it has a zero inclination angle to the Earth&#039;s equitorial plane. In that case, yes, it appears to be unmoving (or moving nearly imperceptibly). A Geosynchronous satellite (what enderw88 mentioned) will have a non-zero inclination angle. As a result, it remains fixed over a given longitude line; however it will appear (from the ground) to &quot;bob&quot; North and South along that line several degrees. The range of deviation from appearing stationary depends on the inclination angle the the eccentricity of the orbit. In all but an extreme case of large inclinations, it&#039;s rate of &quot;bob&quot; will be very slow (a few degrees per hour).&lt;/p&gt;&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;Byrden said: &quot;
&gt;&gt; &quot;They have a much higher angular rate than any deep space object&quot;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;Relative to what? The angular rate of deep space objects is zero relative to a non-rotating Earth. The angular rate of these satellites is zero relative to the actual rotating Earth.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;And if you swap around, the angular rates are still identical.&quot;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;The relation was implied in the discussion to a ground station (antenna/telescope) such as what this article was about. For such a situation, the angular rate of deep space objects varies between 0-15 degrees/hour depending on their declination (specifically: cosine (declination angle) * 360 degrees / 24 hours) from the Earth&#039;s equitorial plane.&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p><span class='quote'>Byrden said: &#8220;&gt;&gt; &#8220;Most are geosynchronous, which mean they move over face of the earth in a pattern that repeats once per day. &#8220;</span></p>
<p><span class='quote'>Actually, it means they don&#8217;t move at all over the face of the earth. They stay permanently above the same spot as it rotates.<br />
</span></p>
<p>A Geostationary satellite is what you have described &#8211; it has a zero inclination angle to the Earth&#8217;s equitorial plane. In that case, yes, it appears to be unmoving (or moving nearly imperceptibly). A Geosynchronous satellite (what enderw88 mentioned) will have a non-zero inclination angle. As a result, it remains fixed over a given longitude line; however it will appear (from the ground) to &#8220;bob&#8221; North and South along that line several degrees. The range of deviation from appearing stationary depends on the inclination angle the the eccentricity of the orbit. In all but an extreme case of large inclinations, it&#8217;s rate of &#8220;bob&#8221; will be very slow (a few degrees per hour).</p>
<p><span class='quote'>Byrden said: &#8221;<br />
&gt;&gt; &#8220;They have a much higher angular rate than any deep space object&#8221;</span></p>
<p><span class='quote'>Relative to what? The angular rate of deep space objects is zero relative to a non-rotating Earth. The angular rate of these satellites is zero relative to the actual rotating Earth.</span></p>
<p><span class='quote'>And if you swap around, the angular rates are still identical.&#8221;</span></p>
<p>The relation was implied in the discussion to a ground station (antenna/telescope) such as what this article was about. For such a situation, the angular rate of deep space objects varies between 0-15 degrees/hour depending on their declination (specifically: cosine (declination angle) * 360 degrees / 24 hours) from the Earth&#8217;s equitorial plane.</p>
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		<title>By: AKALucifer</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-7152</link>
		<dc:creator>AKALucifer</dc:creator>
		<pubDate>Tue, 11 Jul 2006 17:35:58 +0000</pubDate>
		<guid isPermaLink="false">#comment-7152</guid>
		<description>&lt;p&gt;&lt;span class=&#039;quote&#039;&gt;In the case of “The Matrix”, I’m not sure how the heroes survived … let alone their ship.&quot;&lt;/span&gt;&lt;/p&gt;&lt;p&gt;But the &#039;real world&#039; in the matrix is just another matrix so technically it could just be a bug.&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p><span class='quote'>In the case of “The Matrix”, I’m not sure how the heroes survived … let alone their ship.&#8221;</span></p>
<p>But the &#8216;real world&#8217; in the matrix is just another matrix so technically it could just be a bug.</p>
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		<title>By: Larry K.</title>
		<link>http://www.damninteresting.com/radios-revenge/#comment-7122</link>
		<dc:creator>Larry K.</dc:creator>
		<pubDate>Mon, 10 Jul 2006 20:43:06 +0000</pubDate>
		<guid isPermaLink="false">#comment-7122</guid>
		<description>&lt;p&gt;Radio Defense! With computer and radio technology what it is today why can&#039;t we have a device that emits every frequency of radio waves all the time (save for a few used by our troops) in Iraq. Then the bastards making the remote activated IEDs would be blown to bits as soon as the device was &quot;activated&quot;. The Iraqis would not be able to use cell phones, garage door openers or radios but saving the lives of our soldiers would be worth it.&lt;/p&gt;&lt;p&gt;
&lt;/p&gt;</description>
		<content:encoded><![CDATA[<p>Radio Defense! With computer and radio technology what it is today why can&#8217;t we have a device that emits every frequency of radio waves all the time (save for a few used by our troops) in Iraq. Then the bastards making the remote activated IEDs would be blown to bits as soon as the device was &#8220;activated&#8221;. The Iraqis would not be able to use cell phones, garage door openers or radios but saving the lives of our soldiers would be worth it.</p></p>
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