50Hz_hum_square.ogg (Ogg Vorbis sound file, length 5.1 s, 133 kbps, file size: 82 KB)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:57, 10 August 2009 | 5.1 s (82 KB) | BPK | {{Information |Description={{en|1=50 Hz hum of an AC power system}} |Source=Own work by uploader |Author=BPK |Date= |Permission= |other_versions= }} Category:Electricity |
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