This rotation is really fast. I do not know how many there are RPMs, some suggest me a method for determining the speed of rotation? The principle of operation is always that of the classic homopolar motor , but in this experiment are able to reduce to a minimum the friction and the speed increases […]

It may seem complicated, but the operation of this magnetic experiment is very simple. All the supporting structure is made of metal and therefore conduct current up to megnets at the ends of the rotor. When these neodymium magnets are in contact with the end of the copper coil, the circuit closes and the copper […]