Bring the booming system with you

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When ‘boom’ is an understatement.

I know the latest trend in audio is to put speakers into clothing wherever possible, but this backpack speaker unit, complete with 8-inch woofer, seems like overkill. For one thing, it can’t be good for the ears of whoever wears the thing. Then there’s the fact that no one will want to be anywhere near you when this thing kicks off…

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Why Traffic Jams Occur

 

Traffic that grinds to a halt and then restarts for no apparent reason is one of the biggest causes of frustration for drivers. Now a team of Japanese researchers has recreated the phenomenon on a test-track for the first time.The mathematical theory behind these so-called “shockwave” jams was developed more than 15 years ago using models that show jams appear from nowhere on roads carrying their maximum capacity of free-flowing traffic – typically triggered by a single driver slowing down.

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