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TOROID
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This presentation is about my two toroidal whistle patents that resulted from my research in Flue Pipe Acoustics. These whistles have superior propagation and penetration to current warning sirens per rated dB due to less atmospheric absorption loss/Hz..
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Tags:
Background , HoR , Invention , Loudest , Outdoor , Plain , Prototype , Test , TOROID , Toroidal , Toroidal , Warning , Whistle , Whistle , Whistles
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By
acoustics101
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Science & Technology
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12 months ago|
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2004 09 Toni Beardon Golden Thoughts
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Tags:
09 , 2004 , Beardon , Beautiful , Compass , Construct , GOLDEN , GOLDEN , Mathematical , Places , Ruler , Stop , Thoughts , THOUGHTSa , Toni , Tour , Whistle
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By
Marietta1
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Education
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21 months ago|
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Mr Obama Goes to Washington PEN 2943
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This presentation details President- elect Barack Obama's historic whistle- stop train trip to Inaugural ceremonies, in Washington, D. C.
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Tags:
2943 , Barack , Celebrations , DEL , Goes , Historic , InauGural , Inauguration , MR , Obama , Obama , PEN , Ride , Stop , Train , Washington , Washington , Whistle
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By
Peachebooks
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Education
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10 months ago|
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