| Giessler tube |
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| Dating | February 1875 |  |
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| The Geissler tubes were discharge tubes with inside various gases at reduced pressure. These tubes were created in 1857 by Johann Heinrich Geissler (1814-1876) to study the electric conduction of gases. These devices can be considered an evolution of the so-called electric eggs. With the advance in the art of produce vacuum then the Crooks tubes or cathode ray tubes were realized, a milestone in the path that led to the identification of the negative charge unit, the electron. |
| Web page | Giessler tube |
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| Cataloghi | Nº | Voce |
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| Inv. 2016 | 490 | Giessler tube Provisional numbering! |
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| Inv. 1870 | 913 | Tubo di Geissler |
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| Section | Electrostatics |
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| Window | Non esposto |
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| Conditions | | Incomplete | | Not working | | Damaged |
| | Diameter | 2.0 cm (0.8 in) |
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| Height | 20.0 cm (7.9 in) |
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| Materials |
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| Sources |
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Felice M., Elementi di fisica, Ditta G. B. Paravia e Comp., Torino, 1887/90, Vol. 2, pag. 284, fig. 115
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| The additional indications which integrate the items of the conservation's state have the following meaning:
(?) = maybe complete; M = maintenance; P = partial; R = restored; D = used for teaching; NC = not checked; X = impossible to verify. |