Record Name | Ans_00847 |
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Photographer | Unbekannt |
Dating | 1930-1940 |
Caption | In the foreground below: mechanical backing pump, followed by a connection to a mercury vapor jet pump made of glass with a subsequent Dewargefaes, normally filled with liquid air, to collect residual particles of mercury |
Caption (German) | Im Vordergrund unten: mechanische Vorpumpe, anschliessend eine Verbindung zu einer Quecksilberdampfstrahlpumpe aus Glas mit einem anschliessenden Dewargefaes, gefüllt normalerweise mit flüssiger Luft, um Restpartikel des Quecksilbers aufzufangen |
Physical description | Fotografie : Silbergelatine-Abzug |
Format | 18 x 24 cm |
Colour | schwarz/weiss |
Orientation | Querformat |
Categories |
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License | Public Domain Mark |
Copyright notice | ETH-Bibliothek Zürich, Bildarchiv / Fotograf: Unbekannt / Ans_00847 / Public Domain Mark |
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