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The electromagnet will energize and product magnetic force once an hour. As there is magnetic force on the middle, the iron ball will be sticked onto the electromagnet cylinder. And when the electromagnet cylinder whril to thr next district, it will lose the power and let the ball leave the next district.
As people stand in the different way, the time they view would be different.
We are always played by the time, so what about play with the time?
New Taipei, Taiwan