| Pendulum with electromegnet |
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| Dating | 11 March 1940 |  |
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| The period of small oscillations of a pendulum depends on the gravity. Three of the four oscillation rules of the pendulum can be verified by means of some simple pendulums, but for the fourth law is necessary to adopt some devices in order to vary the value of the local gravity. One of these is that the mass (an iron ball) be attracted by a electromagnet. The higher the attraction, the lower si the period. |
| Web page | Pendulum with electromegnet |
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| Cataloghi | Nº | Voce |
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| Inv. 2016 | 160 | Pendulum with electromegnet Provisional numbering! |
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| Inv. 1870 | 968 | Pendolo con elettrocalamita per la dimostrazione della variazione del periodo di oscillazione con la variazione dell'accelerazione di gravità |
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| Section | Mechanics |
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| Window | Non esposto |
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| Conditions | | | Large | 25.0 cm (9.8 in) |
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| Width | 17.0 cm (6.7 in) |
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| Height | 44.0 cm (17.3 in) |
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| Materials |
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| 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. |