Why Electricity Can Drive a Motor to Rotate

The motor is one of the most important tools of human civilization, contributing greatly to the functioning of society. Electric fans, subways, electric cars, elevators—the examples are countless.





Why Do Maglev Trains Need to Float

Magnetic Levitation (Maglev) trains are famous for their high speed, but how can such heavy trains float? And why do they need to float at all? A maglev train is a high-speed transport system that


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