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A whirlpool is a body of rotating water produced by opposing currents or a current running into an obstacle. [ 1 ] [ clarification needed ] Small whirlpools form when a bath or a sink is draining. More powerful ones formed in seas or oceans may be called maelstroms ( / ˈ m eɪ l s t r ɒ m , - r ə m / MAYL -strom, -strəm ).
[2] [3] The water pumps that inspired the whirlpool bath were a family invention, meant to help soothe arthritis symptoms. The Jacuzzi company holds more than 250 patents for inventions in fields ranging from pump systems to jet technology. [4] Roy Jacuzzi and Peter Kosta hold the patent for the built-in Jacuzzi Whirlpool Bath. [citation needed]
A whirlpool is an example of the latter, namely a vortex in a body of water whose axis ends at the free surface. A vortex tube whose vortex lines are all closed will be a closed torus -like surface. A newly created vortex will promptly extend and bend so as to eliminate any open-ended vortex lines.
Fire whirls or swirls, sometimes called fire devils or fire tornadoes, can be seen during intense fires in combustible building structures or, more commonly, in forest or bush fires. A fire whirl is a vortex-shaped formation of burning gases being released from the combustible material. The genesis of the vortex is probably similar to a dust ...
A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one letter, while the black squares are used to ...
An 1830 map showed the "Quoddy Hell-Gate" of "dangerous whirlpools" off the southern tip of Deer Island. The whirlpool is caused by local bathymetry and a 20-foot (6.1 m) tidal range [1] where waters exchange between Passamaquoddy Bay and the Bay of Fundy, combined with the topography of the location's sea floor at the confluence of the numerous local currents through channels and over small ...
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Reynolds Experiment (1883). Osborne Reynolds standing beside his apparatus. In 1883, scientist Osborne Reynolds conducted a fluid dynamics experiment involving water and dye, where he adjusted the velocities of the fluids and observed the transition from laminar to turbulent flow, characterized by the formation of eddies and vortices. [5]