File:Wave opposite-group-phase-velocity.gif
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Wave_opposite-group-phase-velocity.gif (250 × 154 pixels, file size: 354 KB, MIME type: image/gif, looped, 50 frames, 4.0 s)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:42, 2 April 2011 | ![]() | 250 × 154 (354 KB) | commons>Geek3 | self created file |
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