File:PSM V19 D202 Sound transmission with lampblack reflector.jpg
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Size of this preview: 800 × 287 pixels. Other resolutions: 320 × 115 pixels | 640 × 230 pixels | 1,024 × 367 pixels | 1,280 × 459 pixels | 3,366 × 1,208 pixels.
Original file (3,366 × 1,208 pixels, file size: 257 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:55, 21 March 2014 | 3,366 × 1,208 (257 KB) | Ineuw | Cleaned image & improved contrast | |
02:49, 21 August 2010 | 3,414 × 1,247 (291 KB) | Ineuw | {{Information |Description = Sound transmission with lampblack reflector |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_19.djvu/202 |Date = 1881 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Categor |
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