Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 239
or this purpose. The minimum limit for the normal ear he found to liebetween 16 and 24 single vibrations in a second; the maximum limit reached41,000 ; but many persons with average powers of hearing were found to beabsolutely deaf to notes of 16,000, 12,000, or even fewer vibrations. It appears… … 222 On Sound. [244- sure the upper limit was at 48,000 vibrations, with li atmospheres it was60,000, while with steam of 2.^ atmospheres it had not been attained with72,000 vibrations. 245. Suhamels graphic method.—When the syren or Sa\arts wheelis used to determine the exact number of vibrations…
Physics
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