File:PSM V13 D184 Sound waves of different lengths and amplitudes.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:35, 4 August 2010 | 1,383 × 594 (27 KB) | Ineuw | {{Information |Description = Sound waves of different lengths and amplitudes |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_13.djvu/184 |Date = 1878 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Cate |
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