Blowing smoke rings is a popular party trick and performance art form that involves creating visible, donut-shaped clouds of smoke. Smoke rings are formed when a vortex ring is created by expelling a puff of smoke from the mouth or a smoke-producing device in a specific way. The vortex ring entrains the surrounding air, creating a visible, smoke-filled ring that travels through the air.
Smoke rings have been used for centuries as a form of entertainment and communication. In the 19th century, smoke rings were used by Native Americans to send signals and by magicians to create illusions. Today, smoke rings are often used as a party trick or as a form of performance art.
