Shock dynamo beat - PBS: Tesla - Master of Lightning: A Story of Youth Told by Age

Kylian Mbappe turned in Joao Moutinho's low cross to pull one back in the second half, but the Ligue 1 side could not pull off an unlikely comeback.

Mufflers are installed within the exhaust system of most internal combustion engines , although the muffler is not designed to serve any primary exhaust function. The muffler is engineered as an acoustic soundproofing device designed to reduce the loudness of the sound pressure created by the engine by way of acoustic quieting . The majority of the sound pressure produced by the engine is emanated out of the vehicle via the same piping used by the silent exhaust gases. The emitted noise is abated by a series of passages and chambers lined with roving fiberglass insulation and/or resonating chambers harmonically tuned to cause destructive interference , wherein opposite sound waves cancel each other out. [2] [3]

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