polo de atraccion fisica 31
magnet physics is incorrectly written and it should be written as "POLE OF ATTRACTION PHYSICS." being its meaning: Each of the two poles of a magnet. There are two poles, positive and negative. Those of the same sign repel each other, opposites attract. With a cross is designates the pole positive, with a script or symbol of remaining (-) the negative. Serves for the power: batteries, batteries and cables.