Iceland spar rhombohedron - Instrument's card

	Virtual Museum - Traversi Museum
	Instrument's card

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Iceland spar rhombohedron

Dating

November 1880

Web page

Iceland spar rhombohedron

Cataloghi	Nº	Voce
Inv. 2016	769	Iceland spar rhombohedron Provisional numbering!
Inv. 1925b	213	Romboedro d'Islanda - Causa richiesta scarico: mancante
Inv. 1870	474	Romboedro di Spato di Islanda

Section

Optics

Window

Non esposto

Conditions

Complete

Working

Intact

Diameter	9.0 cm (3.5 in)
Height	3.0 cm (1.2 in)

Materials

cork, crystals

Sources

Felice M., Elementi di fisica, Ditta G. B. Paravia e Comp., Torino, 1887/90, Vol. 3, pag. 339, fig. 190
Privat Deschanel A., Trattato elementare di fisica, Fratelli Dumolard, Milano, 1890, pag. 794, fig. 727

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.