| Copper wire solenoid |
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| Dating | 1868 - 1874 (?) |  |
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| This object is quite frequent in electrodynamics and it has the name of solenoid, word introduced in 1820 by tha French physicist André-Marie Ampére (1775-1836). Generally the copper wire, which must be isolated with silk if the coils are compact, is wrapped on an insulating wooden support. When a direct current circulates in it, the solenoid has a magnetic behaviour completely equivalent to the one shown by a magnetized iron bar of the same length and for this reason the solenoids have several applications in a lot of electrodynamic experiments. |
| Web page | Copper wire solenoid |
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| Cataloghi | Nº | Voce |
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| Inv. 2016 | 519 | Copper wire solenoid Provisional numbering! |
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| Inv. 1925a | 204 | Elica di filo di rame su cilindro di legno |
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| Inv. 1870 | 304 | Elica di filo di rame su cilindro di legno |
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| Section | Electrodynamics |
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| Window | R |
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| Conditions | | Complete | | Not working | | Intact |
| | Diameter | 5.0 cm (2 in) |
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| Height | 14.0 cm (5.5 in) |
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| Materials | brass, cupper, wood |
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| Sources |
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Melloni M., Seguito di Fisica dell'anno 1828-1829, Manostritto cartaceo di F. Pianforini, Parma, 1829, pag. 47, fig. 69
Premoli P., Nuovo dizionario illustrato di elettricit&agreve; e magnetismo, Soc. Editrice Sonzogno, Milano, 1904, Vol. 2, pag. 361, fig. 1559
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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. |