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Pull the wheel left to right to correspond to the previous or next song
It allows you to generate your own power and incorporates a windmill for added visual appeal
External Power: DC 5V (USB Cable)
fine and smooth surface treatment
NIKOLATOY® Tesla's egg of Columbus-Electromagnetic Eddy Current Experiment In stock Pull the wheel left toIts lid can be opened to observe the internal structure more comprehensively Principle: After the motor is powered on, it rotates to drive the two magnets at the top to rotate in the same way. When the magnets rotate to a certain degree, a magnetic eddy current is formed. The metal egg on the wooden disk will rotate with the magnetic eddy current, and with the long axis rotation, the rotation acceleration will eventually form a gyroscopic effect, and
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