kompabt said:Can "smoke" ring be blown with only air (withouth smoke) in cold?
A smoke ring is a visible, circular ring of air that is created when smoke is released in a controlled manner.
A smoke ring is formed through a process called vortex ring formation. When air is pushed through a small opening, it creates a spinning motion which creates a low pressure area in the center, causing the air to form a ring shape.
The size of the opening, the speed at which the air is pushed through, and the consistency of the air flow are all factors that can affect the formation of a smoke ring with only air.
Yes, a smoke ring can be created with just air. The key is to create a vortex motion with the air, which can be achieved by using a small opening and pushing the air through at a consistent speed.
Creating smoke rings with only air can be used for visual effects in performances or for scientific demonstrations. It can also be used as a tool for studying fluid dynamics and air flow in a controlled environment.