Tyndall's device - Instrument's card

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Tyndall's device

Dating

24 May 1918

Device for demonstrating the transformation of the mechanical energy into heat. A small tube of copper or brass (lost), filled with water and closed with a cork stopper, is put in rapid rotation by means of a tool. The side walls of the tube are clamped by the gripper (the only element survived). The friction that is generated heats the water till boil, blasting the stopper.

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Tyndall's device

Cataloghi	Nº	Voce
Inv. 2016	362	Tyndall's device Provisional numbering!
Inv. 1870	867	Tubo con morsetto per esperienze sul calore

Section

Thermodynamics

Window

Non esposto

Conditions

Complete

Working NC

Intact

Large	19.0 cm (7.5 in)
Width	7.0 cm (2.8 in)
Height	3.0 cm (1.2 in)

Materials

Sources

Bernardi G., Apparecchi di fisica, III Edizione, Ditta Prof. Gaetano Bernardi, Tranto, 1931, pag. 13, fig. 5239
Galileo Officine, Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1929, pag. 151, fig. 5363
Magrini R., Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1940, pag. 33, fig. B304
Privat Deschanel A., Trattato elementare di fisica, Fratelli Dumolard, Milano, 1890, pag. 387, fig. 340
Resti E., Catalogo generale di apparecchi per l'insegnamento della fisica, Ditta Emilio Resti di Franco Brambilla, Pubblicazi, Milano, 1930, pag. 48, fig. 245

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.