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Dictionary Meaning and Definition on 'Eddies'

Eddies Meaning and Definition from Webster's Revised Unabridged Dictionary (1913)
    Eddy \Ed"dy\, n.; pl. Eddies. [Prob. fr. Icel. i?a; cf. Icel. pref. i?- back, AS. ed-, OS. idug-, OHG. ita-; Goth. id-.]
  1. A current of air or water running back, or in a direction contrary to the main current.
  2. A current of water or air moving in a circular direction; a whirlpool. And smiling eddies dimpled on the main. --Dryden. Wheel through the air, in circling eddies play. --Addison. Note: Used also adjectively; as, eddy winds. --Dryden.
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Wikipedia Meaning and Definition on 'Eddies'

In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid flows past an obstacle. The moving fluid creates a space devoid of downstream-flowing fluid on the downstream side of the object. Fluid behind the obstacle flows into the void creating a swirl of fluid on each edge of the obstacle, followed by a short reverse flow of fluid behind the obstacle flowing upstream, toward the back of the obstacle. This phenomenon is most visible behind large emergent rocks in swift-flowing rivers.

Another possible type of turbulence is the vortex. This notion is now applied to gases, which have the same properties as liquids. Here, no void is created, but only an area of lower pressure, but again, a backflow causes the gas to rotate.

Eddies are common in the ocean, and range in diameter from centimeters, to hundreds of kilometers. The smallest scale eddies may last for a matter of seconds, while the larger features may persist for months to years. Those eddies which are between about 10 and 500 km in diameter, and persist for periods of days to months are commonly referred to in oceanography as mesoscale eddies.

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Eddies Sample Sentences in News

  • Eddies and Fury Scoreless in NASL Fall Season Opener
    EDMONTON, AB (July 13, 2014) - Three shots off the post in a match between FC Edmonton and Ottawa Fury FC and a Ryan Richter red card highlighted a 0-0 draw at Commonwealth Stadium on Sunday, July 13th. Read more on this news related to 'Eddies'
  • Mixing it up: Study provides new insight into Southern Ocean behavior
    Turbulent mixing in the deep waters of the Southern Ocean, which has a profound effect on global ocean circulation and climate, varies with the strength of surface eddies -- the ocean equivalent of storms in the atmosphere -- and possibly also wind speeds. A new study is the first to link eddies at the surface to deep mixing on timescales of months to decades. Thi Read more on this news related to 'Eddies'
  • Rock on! Memories of Eddies Rock Club - formerly Edwards No8 - as it plans double relaunch after Sonisphere clash
    A look back - including an exclusive image gallery - at Birmingham's legendary rock club as it plans to rise from the ashes once more with double relaunch at the Tunnel Read more on this news related to 'Eddies'

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