Polaris 800 Vs Arctic Cat
The Cabinet of Physics, recently restored and opened to the public, houses the instruments collected by the successors of Alessandro Volta in the Chair of Physics of the University of Pavia. This is a very rich collection (about 600 instruments, some of which unique in the world), demonstrating how research and teaching in experimental physics remained intense even after the death of the physicist from Como. In particular, Giuseppe Belli, who led the Cabinet in the mid-nineteenth century, greatly enriched the collection with a number of models of his invention. Among these, we can now admire the electrostatic induction generator (which he calls "actuated"), a magneto-electric motor, an electrometer Bohnenberger amended by him and his famous duplicator, still quoted in the penultimate edition of the Encyclopedia Britannica: originated as a device that can multiply very weak electrical charges, was then used as a real electrostatic generator. The size of the collection already at the time of Belli was remarkable and was further expanded by his successor, John Cantoni and other scientists who followed him. Today, in the Cabinet Room, we take a lot of instruments, almost all dating from the nineteenth century. They are divided into sections: Electrology (most consistent), optics, pneumatics, thermology, mechanics, surveyors. We recall here, in addition to the aforementioned instruments Belli, various electrostatic machines (eg machines Bertsch, of Holtz, of Voos), instruments for measuring the intensity and effects of the current (un'amperometro Thomson, a unit to show the interaction between electric currents, a unit of Foucault to indicate the presence of eddy currents, galvanometers of various kinds), various tools Electrology (coils, resistors, resistors, capacitors, elettromegneti, electrometers, tubes for the study of conductivity of gases) and optical (Silbermann a device to check the laws of refraction and reflection devices to show Newton's rings, telescopes, microscopes, polariscope, spectroscope, light meters), an Atwood machine, batteries and thermoelectric calorimeters , a cauldron of Regnault, hygrometers, radiometers, and various tools of geodesy (theodolites, levels, sextants). We finally find un'apparecchio for the study and treatment of lung diseases Carlo Forlanini, Pavia doctor lived in the second half of the nineteenth century.
The Cabinet of Physics, recently restored and opened to the public, houses the instruments collected by the successors of Alessandro Volta in the Chair of Physics of the University of Pavia. This is a very rich collection (about 600 instruments, some of which unique in the world), demonstrating how research and teaching in experimental physics remained intense even after the death of the physicist from Como. In particular, Giuseppe Belli, who led the Cabinet in the mid-nineteenth century, greatly enriched the collection with a number of models of his invention. Among these, we can now admire the electrostatic induction generator (which he calls "actuated"), a magneto-electric motor, an electrometer Bohnenberger amended by him and his famous duplicator, still quoted in the penultimate edition of the Encyclopedia Britannica: originated as a device that can multiply very weak electrical charges, was then used as a real electrostatic generator. The size of the collection already at the time of Belli was remarkable and was further expanded by his successor, John Cantoni and other scientists who followed him. Today, in the Cabinet Room, we take a lot of instruments, almost all dating from the nineteenth century. They are divided into sections: Electrology (most consistent), optics, pneumatics, thermology, mechanics, surveyors. We recall here, in addition to the aforementioned instruments Belli, various electrostatic machines (eg machines Bertsch, of Holtz, of Voos), instruments for measuring the intensity and effects of the current (un'amperometro Thomson, a unit to show the interaction between electric currents, a unit of Foucault to indicate the presence of eddy currents, galvanometers of various kinds), various tools Electrology (coils, resistors, resistors, capacitors, elettromegneti, electrometers, tubes for the study of conductivity of gases) and optical (Silbermann a device to check the laws of refraction and reflection devices to show Newton's rings, telescopes, microscopes, polariscope, spectroscope, light meters), an Atwood machine, batteries and thermoelectric calorimeters , a cauldron of Regnault, hygrometers, radiometers, and various tools of geodesy (theodolites, levels, sextants). We finally find un'apparecchio for the study and treatment of lung diseases Carlo Forlanini, Pavia doctor lived in the second half of the nineteenth century. 
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