Foucault pendulum presentation device

Abstract

The invention relates to a Foucault pendulum presentation device which comprises a truss, a swing rope and a swing ball fixedly arranged at the lower end of the swing rope. A showing table is arrangedunder the swing ball, a universal joint is installed between the upper end of the swing rope and the middle of the truss, the middle of the showing table is provided with a lamp light aided presentation system. The lamp light aided presentation system comprises a circular-ring-shaped sensing zone and a circular-ring-shaped lamp light zone arranged outside the sensing zone, the projection of the area, where a swing trajectory is located on a table top of the showing table is a projection zone, the sensing zone is located in a central area of the projection zone, and the lamp light zone is arranged outside the projection zone. The sensing zone comprises multiple diffuse reflection sensors distributed in an annular array way, and the lamp light zone comprises multiple lamp strips controlledby the diffuse reflection sensors. The Foucault pendulum presentation device has the advantages of being simple in operation, good in presentation effect and capable of demonstrating rich principles and facilitating visual understanding of audiences.

Description

technical field [0001] The invention relates to a Foucault pendulum demonstration device, which belongs to scientific phenomenon demonstration devices. Background technique [0002] In order to prove that the earth is rotating, French physicist Foucault (1819-1868) conducted a successful swing experiment in 1851, hence the name of Foucault's pendulum. The experiment was carried out under the highest dome of the Pantheon in Paris, France. The pendulum is 67 meters long and the pendulum weighs 28 kilograms. The suspension points are specially designed to minimize friction. This kind of pendulum has large inertia and momentum, so it is basically not affected by the rotation of the earth and swings by itself, and the swing time is very long. In the Foucault pendulum test, people can see that the swing plane rotates slowly clockwise during the swing process, and the swing direction changes constantly. Analyzing this phenomenon, the pendulum is not affected by external force in ...

AI Technical Summary

Problems solved by technology

This kind of demonstration method usually consumes a lot of fine sand, the operation is cumbersome, and the demonstration result is single, which is not conducive to the teaching and popularization of Foucault pendulum.

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