SOUND INTENSITY & THE INVERSE SQUARE LAW
The inverse square law for sound
applies to small (point) sources of sound that produce sound uniformly
in all directions. It assumes that the medium
through
which the sound travels is uniform and that the sound does not reflect
from, nor is absorbed by, any surfaces or the air. Under
these conditions, sound will travel as a spherical wave. It will spread
out evenly in all directions and its wavefronts will form the surface
of a sphere.
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