Ring magnets are commonly used in scientific experiments, such as demonstrating magnetic repulsion, where the magnetic ring passes through a wooden rod. When the poles of magnets face each other, they do not come into contact.

Circular magnets are occasionally used in medicine. For example, some studies have shown that if implantable cardioverter defibrillators (ICDs) malfunction, they will neutralize them. If the heart rhythm becomes irregular, ICD will correct the rhythm through electric shock. Sometimes ICD malfunctions and applies more electric shocks than needed, which can be fatal for patients unless a circular magnet is applied to the patient's chest.

Magnets come in various shapes and sizes and are used every day in your home, classroom, science laboratory, and hospital. Although shape usually determines the function of a magnet, don't limit yourself to the common functions of magnet shape - unleash your imagination! How to use magnets of different shapes? Post a comment and let us know!