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The head of a mushroom cloud is a large smoke ring. A smoke ring is commonly formed when a puff of smoke is suddenly injected into clear air, especially through a narrow opening. The outer parts of the puff are slowed by the still air (or by edges of the opening) relative to the central part, imparting it the characteristic poloidal flow pattern.
Vortex rings are torus-shaped vortices where the axis of rotation is a continuous closed curve. Smoke rings and bubble rings are two well-known examples. The lifting force of aircraft wings, propeller blades, sails, and other airfoils can be explained by the creation of a vortex superimposed on the flow of air past the wing.
Vortex rings are plentiful in turbulent flows of liquids and gases, but are rarely noticed unless the motion of the fluid is revealed by suspended particles—as in the smoke rings which are often produced intentionally or accidentally by smokers. Fiery vortex rings are also a commonly produced trick by fire eaters.
Smoke rings over Mt. Etna, Sicily, Italy, on April 5, 2024. (Maria Liotta) The rings arose from Mount Etna, Europe's most active volcano. Etna rises 11,000 feet above the island of Sicily in the ...
A smoke ring is a region of pink colored meat in the outermost 8-10 millimeters of smoked meats. [1] It is usually seen on smoked chicken, pork, and beef. There is some debate as to whether or not the presence of the smoke ring is actually an indicator of quality of the finished barbecue product but it is widely considered to be a desirable ...
A smoke ring is a visible vortex ring formed by smoke in a clear atmosphere. Smoke ring(s) may also refer to: Smoke ring (cooking), in barbecue, a characteristic of some smoked meats; The Smoke Ring, by Larry Niven, 1987; Leif Anderson or "Smoke Rings" (1925–1999), Swedish radio presenter
A Snoop Dogg pin featuring the rapper and NBC Olympics special correspondent blowing smoke rings in the shape of the Olympics rings. Tennis star Coco Gauff just scored one from Snoop Dogg himself.
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