What is a decibel? - 5 Sep 13

EPISODE · Sep 5, 2013 · 44 MIN

What is a decibel? - 5 Sep 13

from James O'Brien's Mystery Hour

Could Chickens survive a fall from a tall building? What is a decibel? Why does salt melt ice? And other mysteries...

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What is a decibel? - 5 Sep 13

0:00 44:09

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