Ruhmkorff Commutators - Instrument's card

	Virtual Museum - Traversi Museum
	Instrument's card

Instrument Nº - Query criteria NOTICE

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Ruhmkorff Commutators

Dating

1868 - 1874 (?)

Web page

Ruhmkorff Commutators

Cataloghi	Nº	Voce
Inv. 2016	528	Ruhmkorff Commutators Provisional numbering!
Inv. 1925a	213	Commutatori di Ruhmkorff
Inv. 1870	323	Commutatori di Ruhmkorff

Section

Electrodynamics

Window

Non esposto

Conditions

Complete

Working NC

Damaged

Large	21.0 cm (8.3 in)
Width	21.0 cm (8.3 in)
Height	11.0 cm (4.3 in)

Materials

brass, cupper, wood, lacquer

Sources

Galileo Officine, Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1929, pag. 193, fig. 5464
Magrini R., Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1940, pag. 29, fig. A068
Premoli P., Nuovo dizionario illustrato di elettricit&agreve; e magnetismo, Soc. Editrice Sonzogno, Milano, 1904, Vol. 1, pag. 156, fig. 210

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.