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A bubble ring, or toroidal bubble, is an underwater vortex ring where an air bubble occupies the core of the vortex, forming a ring shape. The ring of air as well as the nearby water spins poloidally as it travels through the water, much like a flexible bracelet might spin when it is rolled on to a person's arm.
The Brian Jordan plastic "airzooka" Smoke ring produced by a home-made vortex ring toy. An air vortex cannon is a toy that releases doughnut-shaped air vortices — similar to smoke rings but larger, stronger and invisible. The vortices are able to ruffle hair, disturb papers or blow out candles after travelling several metres.
Bubble rings occur underwater when trapped air is released in a circular shape. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways ...
Visible vortex rings can also be formed by the firing of certain artillery, in mushroom clouds, in microbursts, [1] [2] and rarely in volcanic eruptions. [3] A vortex ring usually tends to move in a direction that is perpendicular to the plane of the ring and such that the inner edge of the ring moves faster forward than the outer edge.
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How in the world could there be "best" underwater levels, you ask? Simple -- they're the rare exception that we actually look forward to playing in a world of truly
A supercavitating torpedo is a torpedo using the effect of supercavitation to create a bubble around the torpedo to move at high velocity under water. The following is a list of supercavitating torpedoes which have been developed or are in development. VA-111 Shkval, 1977; Hoot, 2006
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