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Volcano earthquake report for Wednesday, 9 September 2026
• World Earthquake Report for Wednesday, 9 September 2026
• Strong mag. 5.0 earthquake - Celebes Sea, 49 km north of Tahuna, Indonesia,...
• Moderate mag. 4.7 earthquake - Philippine Sea, 135 km southeast of Shima, M...
• The 10 most powerful earthquakes in the world since 1900
• Moderate mag. 4.0 earthquake - Indian Ocean, 80 km southwest of Labuan, Kab...
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#13890
Mon 17 Jan 2005 04:08:PM
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Joined: Aug 2004
Posts: 583
Mission Pilot Level 2
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Mission Pilot Level 2
Joined: Aug 2004
Posts: 583 |
Farseas,<br /><br />First of you’ll need a protractor, a spirit level and a long strait stick (the longer the better) or better yet a plastic pipe. With your protractor make a 51 degree angle between the spirit level and the stick and fasten the stick to the spirit at that angle. Now go to where your dish is and set the spirit level with the ground. Look up the side of the stick or through the hole of the pipe. If you see blue sky you are laughing.<br /><br /><br />Mind you 51 degrees is quite steep. A tree 100m away would have to be (where is my scientific calculator when I need one), some 120m high.<br /><br />Hight of tree = 100m away X tan 50 degree = 123.4<br /> <img border="0" title="" alt="[Wink]" src="images/icons/default/wink.gif" /> <br /><br /><br />Vlad...
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