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File:Kolbenluftpumpe hg.jpg

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ᏄᏍᏛ ᏗᎧᏃᏗ
English: Vacuum pump and bell jar for vacuum experiments, used in science education during the early 20th century, on display in the Schulhistorische Sammlung (School Historical Museum), Bremerhaven, Germany.
ᎢᎦ
ᏅᏓᏳᏓᎴᏅᎯ own work, Schulhistorische Sammlung Bremerhaven
ᏧᏬᏪᎳᏅᎯ Hannes Grobe (talk)
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author name string ᎩᎵᏏ: Hannes Grobe
URL ᎩᎵᏏ: https://commons.wikimedia.org/wiki/user:Hgrobe
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25 ᎦᎶᏂᎢ 2008

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ᎢᎦ/ᎠᏟᎢᎵᏒᎤᏍᏗ ᏓᏟᎶᏍᏛᎢDimensionsᎬᏗᏍᎩᏍᏆᎳ ᎪᏪᎵ
current09:24, 25 ᎦᎶᏂᎢ 2008Thumbnail for version as of 09:24, 25 ᎦᎶᏂᎢ 20082,180 × 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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