1) "Vortex" -- As to vortex filters
vor·tex
Pronunciation: 'vor-"teks
Function: noun
Inflected Form(s): plural vor·ti·ces /'vor-t&-"sEz /; also vor·tex·es /'vor-"tek-s&z/
Etymology: New Latin vortic-, vortex, from Latin vertex, vortex whirlpool -- more at VERTEX
1 : something that resembles a whirlpool <the hellish vortex of battle -- Time>
2 a : a mass of fluid (as a liquid) with a whirling or circular motion that tends to form a cavity or vacuum in the center of the circle and to draw toward this cavity or vacuum bodies subject to its action; especially : WHIRLPOOL, EDDY b : a region within a body of fluid in which the fluid elements have an angular velocity
Pronunciation Symbols

Vortex created by the passage of an aircraft wing, revealed by coloured smoke
A vortex (pl. vortices) is a spinning, often turbulent, flow (or any spiral motion) with closed streamlines. The shape of media or mass swirling rapidly around a center forms a vortex. It flows in a circular motion.

1 Dynamics

2 Two types of vortex

2.1 Free (irrotational) vortex

2.2 Forced (rotational) vortex

3 Observations

3.1 Instances

4 See also

5 References and further reading

6 External links

A vortex can be any circular or rotary flow that possesses vorticity. Vorticity is a mathematical concept used in fluid dynamics. It can be related to the amount of "circulation" or "rotation" in a fluid. In fluid dynamics, vorticity is the circulation per unit area at a point in the flow field. It is a vector quantity, whose direction is (roughly speaking) along the axis of the swirl. Also in fluid dynamics, the movement of a fluid can be said to be vortical if the fluid moves around in a circle, or in a helix, or if it tends to spin around some axis. Such motion can also be called solenoidal. In the atmospheric sciences, vorticity is a property that characterizes large-scale rotation of air masses. Since the atmospheric circulation is nearly horizontal, the (3 dimensional) vorticity is nearly vertical, and it is common to use the vertical component as a scalar vorticity.

Mathematically, it is defined as,

where is the fluid velocity.

The properties of vorticity in 2 and 3 dimensions are treated in some depth in George Batchelor's famous textbook (ch 5 & ch 7 et seq.). Of particular importance in practical situations is the intensification of vorticity which takes place in three dimensions when a vorte..."

2) "Filters" -- As to vortex filters
¹fil·ter
Pronunciation: 'fil-t&r
Function: noun
Etymology: Middle English filtre, from Medieval Latin filtrum piece of felt used as a filter, of Germanic origin; akin to Old High German filz felt -- more at FELT
1 a : a porous article or mass (as of paper or sand) through which a gas or liquid is passed to separate out matter in suspension b : an apparatus containing a filter medium
2 a : a device or material for suppressing or minimizing waves or oscillations of certain frequencies (as of electricity, light, or sound) b : a transparent material (as colored glass) that absorbs light of certain wavelengths or colors selectively and is used for modifying light that reaches a sensitized photographic material -- called also color filter
3 : something that has the effect of a filter (as by holding back elements or modifying the appearance of something) <his work is too often viewed through the filter of race -- Brent Staples>
4 : software for sorting or blocking access to certain online material
Pronunciation Symbols

The term filter may refer to:

In chemistry, engineering, or household usage, a device to separate mixtures. See

filter (chemistry)

filter (water)

filter (air)

filter (oil)

pneumatic filter

cigarette filter.

In optics and photography, a device to remove or block certain wavelengths (colors) of light. See

filter (optics)

filter (photography)

infrared filter

In signal processing applications such as telecommunications and music, an electronic or mechanical device, or mathematical algorithm, to modify the harmonic content of signals. See

electronic filter

audio filter.

In computing:

A program to process a data stream:

filter (software)

filter (Unix)

mail filter

Internet filter

wordfilter

DirectShow

BPF filter expression used in the qualification of network data

In mathematics, a certain kind of subset of a partially ordered set. See

filter (mathematics).

In psychology, a type of learning blockage. See

affective filter.

Filter may also be the name of:

Filter (band), an industrial rock band

Filter (television), a show on the G4 channel:

Filter (magazine), an off-beat indie music magazine

Helicon Filter, a raster graphics editor

Johann Sebastian Filter, inventor of filter paper

Filter coffee, a hot drink chocolate

Filter feeder, an animal that strains food particles from water

Philter, a magical potion

Filtration

Conversion

..."

Further Data On Term for vortex filters
Internet users who seek vortex filters often also seach for: ,
Regularly Occuring Typos with vortex filters include: ovrtex vrotex votrex voretx vortxe ortex vrtex votex vorex vortx vorte cortex fortex gortex bortex virtex vkrtex vlrtex vprtex vartex vertex vurtex voetex vodtex voftex vottex vorrex vorfex vorgex voryex vortwx vortsx vortdx vortrx vortax vortix vortox vortux vortez vortes vorted vortec iflters fliters fitlers filetrs filtres filtesr ilters flters fiters filers filtrs filtes filter rilters dilters cilters vilters gilters fulters fklters folters falters felters fulters fikters fioters fipters filrers filfers filgers filyers filtwrs filtsrs filtdrs filtrrs filtars filtirs filtors filturs filtees filteds filtefs filtets filtera filterw filterd filterx filterz

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