Fixed structure of weightlessness demonstration experiment device

Abstract

The invention relates to a demonstration device for science popularization activities, in particular to a fixed connection structure of a weightlessness demonstration experiment device, which comprises a fixing top board (1) and an experiment cabinet (2); a magnet (3) and a pure iron (5) are embedded on the fixing top board (1) and the experiment cabinet (2); an electrified coil (4) is wounded on the magnet and two ends of the electrified coil (4) are connected to a power supply through a control circuit; and the contact face of the magnet (3) with the pure iron appears as a plane. The fixed connection structure is simple; the fixing process can be completed easily; the falling process of the experiment cabinet (2) is steady; and the demonstration experiment can be carried out repeatedly. The steady falling process of the experiment cabinet can lead the observers to see the experimental phenomenon approaching to the authentic weightlessness condition.

Description

technical field [0001] The invention relates to a demonstration experiment device for popular science education activities, in particular to a fixed connection structure for a weightlessness experiment demonstration device. Background technique [0002] The experimental part of the Ministry of Education's 2005 "Physics Curriculum Standards for Ordinary High Schools" requires students to understand the experiments under weightlessness and microgravity conditions in space capsules or artificial satellites. It is composed of four parts: the nose cone, the barrel section, the tail cone and the tail fin. The experimental cabin includes candles, ignition devices and cameras. on the top. There are following deficiencies in the mode of this fixed experimental cabin: [0003] 1. The way to start the free fall of the weightlessness teaching demonstrator is to burn the cotton thread with the heating wire. Due to the difference in the quality of the cotton thread and the power supply,...

AI Technical Summary

Problems solved by technology

[0003] 1. The way to start the free fall of the weightlessness teaching demonstrator is to burn the cotton thread with the heating wire. Due to the difference in the quality of the cotton thread and the power supply, as well as the thermal inertia of the heating wire, the two cotton threads may not be blown at the same time. It cannot fall smoothly, thus affecting the observation of experimental phenomena

[0004] 2. New cotton thread needs to be replaced for each experiment, which brings unnecessary troubles to the experiment demonstrators. In addition, because the cotton thread needs to be replaced every time, the time between two consecutive experiments is prolonged

[0005] 3. In addition, when fixing the experimental cabin, the middle point of the cotton thread is required to hang on the heating wire. If the lengths of the two ends are different, the cabin body will be skewed. At the same time, the experimental cabin must be supported to keep it in a static state. This process is very waste time

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