Meccanica dei liquidi
- 1 Densimetri-Aerometri-Volumetri-Alcolometri con rastrelliera in legno e ottone
- 2 Rastrelliera in legno e lastra di ottone
- 3 Aerometro Baumé (a)
- 4 Aerometro Baumé (b)
- 5 Aerometro Cartier
- 6 Aerometro Selon Cartier
- 7 Alcolometro centesimale di Gay-Lussac
- 8 Alcolometro centesimale con provetta grande di vetro
- 9 Lattometro Quevenne
- 10 Aerometro del Nicholson
- 11 Apparecchio di De Haldat
- 12 Apparecchio per la porosità in ottone e bosso
- 13 Arganetto idraulico
- 14 Bilancia idrostatica con accessori
- 15 Igroscopio a sali di cobalto
- 16 Martello liquido sonante
- 17 Manometro metallico o tubo Bourdon
- 18 Manometro Bourdon 10 atmosfere
- 19 Manometro Bourdon 3 atmosfere
- 20 Manometro per acqua
- 21 Tubo ad U su tavoletta di legno graduata
- 22 Piezometro di Oersted
- 23 Pompa aspirante
- 24 Pompa premente
- 25 Pompa aspirante-premente
- 26 Pompa antincendio
- 27 Sfera di ottone a zampilli
- 28 Apparecchio di Pascal in metallo
- 29 Apparecchio di Pascal in vetro
- 30 Sistema di vasi comunicanti
- 31 Torchio idraulico
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Wooden and brass rack with three Baumé’s aerometers, an oenometer and an areometer for must Such instruments can measure respectively the density and the concentration of solutions of a liquid body, the volume of a displaced liquid mass, and its alcoholic content. -
A sample of an ancient hydrometer-holder rack. -
A simple of Baumé’s aerometer -
A sample of Baumé’s aerometer. -
A sample of aerometer -
A sample of aerometer. -
A sample of alcoholometer -
A sample of centesimal alcoholometer -
Such instrument, also known as lactodensimeter, is used to measure the density of the milk. -
The device allows to measure the specific weight of solids which are not water-soluble as an alternative method used in a hydrostatic scale. This aerometer was invented by William Nicholson (1753-1815) who, beyond being an inventor, was also one of the first scientific journalists. In 1785, in fact, he published an article concerning this new instrument. Anyway, aerometers were already well-known since the Alexandrine School. -
This appliance is used to show that the idrostatic pressure at the bottom of vases is indipendent from the shape of the vases themselves. A similar appliance –which allows to measure the force that is present at the bottom of a container- is called Pellat’s Vase. -
The device allows to carry out experiments on the porosity of solid bodies. -
The windlass, also known as turbine or Barker’s mill, was invented by Dr Barker and shown as a model to the Royal Society in 1743 by John Desaguliers. It was once used for mechanical purposes, for example to activate mills, engines or jet-turbines. Today’s tools used to water fields and gardens, are built following the same working principle. -
Through this appliance it is possible to test Archimede’s fluid pressure. This kind of scale can also be used to measure indirectly the density of fluid or solid bodies. -
Salts hygroscope used to show atmospheric humidity’s changes by correspondence variations of the salt’s colour. -
The device allows to simulate the noises produced by steam heaters during the starting and extinction phases. Such noises are due to the contemporary presence of water and its steam in the vacuum. -
Kind of metal manometer which allows to measure very high pressures. Metal manometers, even though not so precise as the water ones, are much handier and quite widespread for industrial use. -
A kind of manometer used to measure the pressure in liquids, Bourdon system. Manometers, particularly the Bourdon metal ones, are widespread in industry. -
A sample of metal manometer with a brass case and graduated scale from 0 to 3 atmospheres, made in Germany. -
A sample of water manometer, Bourdon system, with a brass structure, fit, by means of a rod, to a solid base to make it steady. -
Kind of free air manometer, it collects measures concerning pressure. -
This device was used to verify the dependence on the pressure of the volume of liquids. -
The model of a suction pump; it is an example of a hydraulic machine employed to rise water to different levels. It is used, for instance, in reclaiming land or in mines. -
The model of a delivery pump: it is an example of a hydraulic machine. -
The model of a suction – delivery pump: it is a hydraulic machine which shows the features of a double action (reciprocating) pump. -
The model of a fire pump is an example of double action pump which, because of its structure, guarantees a constant jet of water. The first model of this kind of machine dates back to 1680. -
A device that allows to test Pascal’s law, according to which a fluid completely transmits the pressure variations it undergoes to all its surface points. -
The appliance has the structural and functional characteristics of a jet sphere. -
The device is a glass Pascal appliance. -
The device allows to verify that the liquid poured in the bell vessel reaches the same level in all the containers linked to it, no matter the shape or the section they have. The principle of communicating vessels is used in several ways in the water-level, in artesian wells and in waterworks. -
The device works following Pascal’s principle and shows the link between pushing pressure and the surface on which it operates. The hydraulic press was invented in 1795 by the English engineer Joseph Bramah and is still used to lift heavy loads like cars, etc. It is also used as a press to tamp down bulky goods like cotton, hay, straw, to squeeze grapes and seeds, and to obtain strong tractions.
