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Water hammer
DatingMay 1882
A curious tool in its extreme simplicity used to hear the sound produced by a liquid that he drips or falls on a surface in conditions of low pressure (around the millimetre of mercury). With surprise it was possible to notice that the sound was the same produced by a hammer in striking a metal surface.
Web page Water hammer
CataloghiNºVoce
Inv. 2016624Water hammer          Provisional numbering!
Inv. 1925a283Martello sonante fosforescente
Inv. 1870484Martello sonante
SectionAcoustics
WindowJ
Conditions
Complete
Working D
Intact
Diameter4.0 cm (1.6 in)
Height28.0 cm (11 in)
Materials glass, water
Sources
Daguin P. A., Cours de physique élémentaire avec les applications a la météorologie , E. Privat, Toulouse, 1863, pag. 47, fig. 49
Jamin J., Piccolo trattato di fisica, B. Pellerano, Napoli, 1880, pag. 3, fig. 4
Milani G., Corso elementare di fisica e meteorologia, Editori della biblioteca utile, Milano, 1869, Vol. 1, pag. 86, fig. 34
Tarquini A., Apparecchi di fisica, Antonio Tarquini, Roma, 1928, pag. 21, fig. 90
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.