Intensity of sound
is measured in decibels.(DB)
the scale runs from the faintest sound the human can detect
to over 180DB,the noise of a rocket pad during launch.
DB are measured logarithmically
this means that DB intensity increases by units if 10,each increases is ten times the lower figure.
thus 20DB is 10 times intensity of 10DB.
and 30 DB is 100 times as intense as 10 DB.
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