Induction coil Nº 863 - Instrument's card

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Induction coil Nº 863

Dating

8 July 1917

Maker

Luigi Gori

The first working model of such a machine was invented by Irish priest Nicholas J. Callan (1799-1864) in 1837. The induction coils of Heinrich D. Ruhmkorff (1803-1877) were excellent and most efficient instruments than the devices of Callan. For this reason in the nineteenth century Ruhmkorff, that began marketing its instruments starting from 1851, is known as the inventor of the induction coil and Callan was forgotten.

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Induction coil Nº 863

Cataloghi	Nº	Voce
Inv. 2016	567	Induction coil Nº 863 Provisional numbering!
Inv. 1870	863	Rocchetto d'induzione capace di fornire scintille da 25 cm

Section

Electrodynamics

Window

Conditions

Complete

Working NC

Intact

Large	64.0 cm (25.2 in)
Width	28.0 cm (11 in)
Height	51.0 cm (20.1 in)

Materials

Sources

Bernardi G., Apparecchi di fisica, III Edizione, Ditta Prof. Gaetano Bernardi, Tranto, 1931, pag. 59, fig. 5417
Daguin P. A., Cours de physique élémentaire avec les applications a la météorologie , E. Privat, Toulouse, 1863, pag. 626, fig. 656
Desbeaux E., Fisica Moderna, Casa Editrice Sonzogno, Milano, 1892, pag. 309, fig. 248
Felice M., Elementi di fisica, Ditta G. B. Paravia e Comp., Torino, 1887/90, Vol. 2, pag. 274, fig. 109
Galileo Officine, Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1929, pag. 230, fig. 5549
Magrini R., Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1940, pag. 304, fig. N1176
Martelli V., Apparecchi per l'insegnamento della fisica, Soc. Italiana Apparecchi scientifici, Milano, 1956, pag. 31, fig. 732
Premoli P., Nuovo dizionario illustrato di elettricit&agreve; e magnetismo, Soc. Editrice Sonzogno, Milano, 1904, Vol. 2, pag. 287, fig. 1479

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.

In order to avoid that instruments' cards without the english description text of the device be directly selected, I added a special filter with which only the complete cards are shown in the menu. Anyhow all the partial english instruments' cards (with instrument's dating, dimensions, state of conservation...) can always be seen even if they haven't the english description text. To read this uncomplete cards is sufficient to click, for example, on an instrument's picture or on the word "View" of the table column called "Card" every time they appear in the other pages of this database.