Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 178
§ 6. The circumstances attending the propagation ofluminous and sonorous waves are similar. The intensity ELEMENTS OF OPTICS. 169 … 6* media of light, like that of sound, depends upon, and is directly intensity ofproportional to the amount of molecular displacement. iyiIt is, therefore, Acoustics, § 53, inversely proportional tothe square of the distance from the original luminoussource. § 7. We have seen, Acoustics, § 16, that…
Mechanics · Acoustics · Optics
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