Theories: Magnetism

Magnetism is a physical phenomenon produced by the motion of electric charges, which creates a magnetic field. This field can attract or repel certain materials, like iron. The Earth itself acts like a giant magnet, with a magnetic north and south pole, affecting compasses. Magnetic properties are due to the alignment of electrons within materials; in magnets, these electrons align in a way that creates a strong, stable magnetic field. Magnetism plays a crucial role in modern technology, powering devices like electric motors, generators, and MRI machines, and is essential for data storage and retrieval in computers.