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Toys Auto Vacuum Cleaner
Through the transmission of gear set and the ingenious combination of movable baffle in time, Toys Auto Vacuum Cleaner can realize obstacle avoidance, turning, dust collection and other actions, and realize mechanical automation. The structure, principle and application of vacuum cleaner are understood through experiments.
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Lie Detector Experiment
Lie Detector Experiment makes use of the characteristics of human lying, such as pulse acceleration, blood pressure rise, subcutaneous sweat gland secretion increase, which leads to skin sweating. Through the skin resistance on the finger to detect the change of contact point, through the oscillation comparison circuit to realize, understand the characteristics of human lying and the application of electronic circuit.
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Camera Experiment
This Camera Experiment uses the light reflected by the subject to focus through the camera lens (scene lens) and the shutter that controls the exposure amount. After the subject forms a latent image on the photosensitive material in the dark box, it forms a permanent image after processing (i.e. developing and fixing).
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Gear Set
This Gear Set uses rack, belt, turbine, vortex rod, umbrella gear, flat gear and other transmission modes, through experiments to understand the advantages and disadvantages of various transmission devices, such as noise, transmission ratio and change of transmission direction.
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Constellation Instrument
Constellation Instrument is composed of a rotatable constellation image and a base with elliptical opening and time scale. The constellation image is projected into the arc-shaped simulated sky by using projection imaging, and the actual star sky can be displayed in different days and times by rotating the constellation image. Through the experiment to see the starry sky, recognize the constellation, stimulate students' interest in exploring the universe.
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Diy Aerovane Wind Cup
The anemometer of Diy Aerovane Wind Cup mainly drives the magnet with eight pole magnetic impact through the wind blade. When the aluminum plate connected with the pointer will produce some eddy current, there will also be magnetic effect. Along with the magnetic field, the magnetism of the magnet and the eddy current on the aluminum disk will also attract and repel each other
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