The fan in my sister's room uses an electric motor in order to move air and cool the room. Motors are the result of a unique interaction between a magnet and wire carrying current and their ability to produce physical motion. A permanent magnet produces a magnetic field in a region where a loop of wire is mounted to turn. Any current in the loop has one direction in the upper side of the loop and the opposite direction in the lower side. If the upper side of the loop is forced to the left by the magnetic field, the lower side is forced to the right. In a motor the current is reversed during each half revolution by means of stationary contacts on the shaft. In this way, the current in the loop alternates so that the forces on the upper and lower regions do not change directions as the loop rotates. Motors are the basis for modern technology. Yay, magnets!