Magnetic compass Compass Magnetic compass 0 0 0 0 0 0 3 The magnetic compass contains a magnet that interacts with the earth's magnetic field and aligns itself to point to the magnetic poles.
Electromagnetic heat meter Heat meter Electromagnetic heat meter 12 1 1 0 0 23 The operating principle of electromagnetic flowmeters is based on the ability of the liquid to bring the electric current as it moves in a magnetic field. That is, electromagnetic energy meter is used in the phenomenon o…Mais
