Strong magnets are materials that produce a powerful magnetic field, allowing them to attract or repel other magnetic objects. They are commonly made from materials like neodymium or samarium-cobalt, which are known for their high magnetic strength. These magnets are used in various applications, including electric motors, speakers, and MRI machines. The strength of a magnet is measured in units called teslas or gauss. Strong magnets can lift heavy objects and are often used in industries for tasks like lifting metal parts or holding tools in place. Their unique properties make them essential in modern technology and manufacturing.