A magnet is an object that produces a magnetic field, which can attract or repel certain materials, primarily metals like iron, nickel, and cobalt. Magnets have two poles: a north pole and a south pole. When two magnets are brought close together, opposite poles attract each other, while like poles repel. Magnets are commonly used in various applications, including refrigerator magnets, compasses, and electric motors. They can be found in everyday items, such as credit cards and speakers, where they help in storing information or producing sound. Magnets play a crucial role in modern technology and industry.