Abstract
The Attenuation of Sound and the Constant of Radiation of Air
A. WILMER DUFF 129 | THE
NUMBER 3
PHYSICAL REVIEW
A JOURNAL OF EXPERIMENTAL AND
THEORETICAL PHYSICS
XXXII
MARCH 1898
THE intensity of sound spreading in spherical waves from a source would if no part of the energy of vibration were lost in the passage, vary inversely as the square of the distance. It is
certain, however, that a considerable proportion of the vibrational
energy must in every second be converted into heat, though no
attempt seems to have been made to determine experimentally how
large this portion is. The chief purpose of the present paper is to
describe some observations made by the author with a view to
obtaining a rough estimate of this important quantity.
