Balloon for the paraboloid - Instrument's card

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	Instrument's card

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Balloon for the paraboloid

Dating

1894

By rapidly spinnig this device, the surface of the liquid inside it gives rise to a particular three-dimensional conformation that is known as paraboloid. All this can be easily observed by means of this special "bulb" filled with water.

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Balloon for the paraboloid

Cataloghi	Nº	Voce
Inv. 2016	140	Balloon for the paraboloid Provisional numbering!
Inv. 1925a	368	Palloncino per la formazione del paraboloide liquido
Inv. 1870	632	Palloncino per la formazione del paraboloide liquido

Section

Mechanics

Window

Conditions

Complete

Working D

Intact

Diameter	9.0 cm (3.5 in)
Height	16.0 cm (6.3 in)

Materials

Sources

Bernardi G., Apparecchi di fisica, III Edizione, Ditta Prof. Gaetano Bernardi, Tranto, 1931, pag. 11, fig. 5071
Daguin P. A., Cours de physique élémentaire avec les applications a la météorologie , E. Privat, Toulouse, 1863, pag. 39, fig. 36
Felice M., Elementi di fisica, Ditta G. B. Paravia e Comp., Torino, 1887/90, Vol. 1, pag. 299, fig. 105
Galileo Officine, Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1929, pag. 59, fig. 5117
Magrini R., Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1940, pag. 29, fig. B290
Privat Deschanel A., Trattato elementare di fisica, Fratelli Dumolard, Milano, 1890, pag. 73, fig. 54

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.