67 lines
2.8 KiB
Plaintext
67 lines
2.8 KiB
Plaintext
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(word processor parameters LM=8, RM=75, TM=2, BM=2)
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Taken from KeelyNet BBS (214) 324-3501
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Sponsored by Vangard Sciences
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PO BOX 1031
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Mesquite, TX 75150
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There are ABSOLUTELY NO RESTRICTIONS
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on duplicating, publishing or distributing the
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files on KeelyNet except where noted!
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November 7, 1992
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SPEAKER.ASC
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--------------------------------------------------------------------
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The following appeared in the prestigious Electric Spacecraft
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Journal - Issue #6, Published October 12, 1992. Pages 43 - 44.
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
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<20> Information from <20>
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<20> James E. Hartman <20>
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<20> P.O. Box 612 <20>
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<20> Griffith, In 46319<31>
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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ACOUSTIC RADIATION TEST
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USING AND ELECTRIC GUITAR
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Acoustical radiation forces have been shown to be able to levitate
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objects. The utilization of this force for the purpose of levitation
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is primarily dependent on the lower frequency sonics in a longitude
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mode; they provide a lifting force in the form of pressure wave
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harmonics.
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As shown in Figure 1, when the first fret E-chord on a guitar was
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struck through a distortion amplifier a state of motion was induced
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and minimal levitation sustained for up to 5 seconds at
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approximately 25 watts.
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Higher frequency chords gave only vibrational responses. The
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distorted oscillation of the guitar strings can induce propulsion
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due to the pulse of many sonic waves set in motion.
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In one test, shown in Figure 2, we proved that the harmonic
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frequencies of a guitar can indeed lift a speaker as high as a
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centimeter above the ground.
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We have also discovered that the lower the frequency notes, less
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amplification was required to sustain levitation. This suggests
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that levels below hearing in the 30 Hz range may produce the
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greatest results at lower amplification.
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On a flat surface, motion usually goes in the direction of highest
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weight offset. The weight tilts the speaker to change the direction
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of pressure force. In order to gain sufficient lift, high
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amplification is required. I am unable to conduct adequate
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experimentation due to the overheating of speaker coils! No
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complete analysis of the situation has been preformed.
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