File:HelmholtzWhistle.jpg
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![File:HelmholtzWhistle.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/HelmholtzWhistle.jpg/314px-HelmholtzWhistle.jpg)
Size of this preview: 314 × 599 pixels. Other resolutions: 126 × 240 pixels | 606 × 1,156 pixels.
Original file (606 × 1,156 pixels, file size: 187 KB, MIME type: image/jpeg)
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:52, 1 November 2011 | ![]() | 606 × 1,156 (187 KB) | commons>Jbarta | rotate, darken |
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