Electroscopes - Instrument's card

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Electroscopes

Dating

3 October 1961

The electroscope is in general a device capable of detecting the state of charge of a body. If equipped with a graduated scale, it is called electrometer, ie an electroscope also able to provide a measure of the charges. There are various types of electroscopes: this, with gold leaf, is an invention of the English physicist Abraham Bennet (1750-1799) in 1786.

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Electroscopes

Cataloghi	Nº	Voce
Inv. 2016	498	Electroscopes Provisional numbering!
Inv. 1870	1036	Due elettroscopi a foglie d'oro con tappo isolante in plexiglas e bacchetta metallica con manico isolante

Section

Electrostatics

Window

Non esposto

Conditions

Complete

Working

Damaged

Diameter	11.0 cm (4.3 in)
Height	28.0 cm (11 in)

Materials

Sources

D'Ettingshausen, Elementi di Fisica, Carlo Turati Tipografo Editore, Milano, 1854, pag. 456, fig. 102
Privat Deschanel A., Trattato elementare di fisica, Fratelli Dumolard, Milano, 1890, pag. 470, fig. 394
Resti E., Catalogo generale di apparecchi per l'insegnamento della fisica, Ditta Emilio Resti di Franco Brambilla, Pubblicazi, Milano, 1930, pag. 66, fig. 328

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.