File:Kolbenluftpumpe hg.jpg
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Date/Time | Dimensions | User | Comment | |
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current | 02:24, 25 August 2008 | 2,180 × 1,822 (714 KB) | Hgrobe | {{Information |Description=Air pump to demonstrate vacuum |Source=own work, Schulhistorische Sammlung Bremerhaven |Date=2008-08-25 |Author=~~~ |Permission=Attribution 2.5 |other_versions= }} {{cc-by-3.0}} Category:Physical_phenomena |
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