Faraday's cage - Instrument's card

	Virtual Museum - Traversi Museum
	Instrument's card

Instrument Nº - Query criteria NOTICE

Print the card

Faraday's cage

Dating

1892

The tool had the task to show that the electric charges in the electrified conductors take place only on their outside surface. In fact thera are not charges on the internal surface of the cage. This physical phenomenon was observed by Michael Faraday (1791-1867) in 1837.

Web page

Faraday's cage

Cataloghi	Nº	Voce
Inv. 2016	476	Faraday's cage Provisional numbering!
Inv. 1925a	360	Apparecchio per dimostrare la distribuzione della elettricità alla superficie dei corpi
Inv. 1870	617	Apparecchio per dimostrare la distribuzione dell'elettricità alla superficie dei corpi

Section

Electrostatics

Window

Conditions

Complete

Working D

Intact

Diameter	17.0 cm (6.7 in)
Height	34.0 cm (13.4 in)

Materials

iron, wood, paper, glass, elder

Sources

Drigo A., Lezioni di fisica sperimentale e applicata alla medicina e alla biologia, Libreria R. Zannoni, Padova, 1941, pag. 698, fig. 302
Resti E., Catalogo generale di apparecchi per l'insegnamento della fisica, Ditta Emilio Resti di Franco Brambilla, Pubblicazi, Milano, 1930, pag. 67, fig. 339
Tarquini A., Apparecchi di fisica, Antonio Tarquini, Roma, 1928, pag. 111, fig. 30449

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.