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   Barber–Layden–Power effect
   The Barber–Layden–Power effect (BLP effect or colloquially Bleep) is a blast wave phenomenon observed in the immediate aftermath of the successful functioning of air-delivered high-drag ordnance at the target. In common with a typical blast wave, the flow field can be approximated as a lead sho...
   Found op http://en.wikipedia.org/wiki/Barber–Layden–Power_effect
   
   

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