Concave lens - Instrument's card

	Virtual Museum - Traversi Museum
	Instrument's card

Instrument Nº - Query criteria NOTICE

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Concave lens

Dating

1845 - 1846

Web page

Concave lens

Cataloghi	Nº	Voce
Inv. 2016	718	Concave lens Provisional numbering!
Inv. 1925a	118	Menisco divergente
Inv. 1870	173	Menisco divergente
Inv. 1838	708	Due lenti montate in ottone

Section

Optics

Window

Conditions

Complete

Working

Intact

Diameter	11.0 cm (4.3 in)
Height	31.0 cm (12.2 in)

Materials

brass, glass, lacquer

Sources

Bouchardat A., Physique élémentaire avec ses principales applications, Germer Baillière, Paris, 1851, pag. 405, fig. 154

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.