Curl


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curl

Maths a vector quantity associated with a vector field that is the vector product of the operator ∇ and a vector function A, where ∇ = i∂/∂x + j∂/∂by + k∂/∂z, i, j, and k being unit vectors. Usually written curl A, rot A

Curl

 

of a vector field A, the vector characteristic of a “rotating component” of field A. The curl is represented by the symbol rot A. It can be interpreted in the following manner: Let A be the velocity field of a fluid flow. At a given point of the flow we place a small wheel with blades and orient its axis in the direction of rot A at that point. Then the angular velocity of the wheel’s rotation from the action of the current will be maximum, and its value will equal (| rot A |)/2. If the field A has the coordinates P(x, y, z), Q(x, y, z), and R(x, y, z), then the curl has the coordinates

E. G. POZNIAK

curl

[kərl]
(forestry)
A block of timber cut from a crotch for cutting into veneers.
(materials)
A defect of paper caused by unequal alteration in the dimensions of the top and underside of the sheet.
(mathematics)
The curl of a vector function is a vector which is formally the cross product of the del operator and the vector. Also known as rotation (rot).

curl

A winding, swirling, or circling in the grain of wood, usually obtained from the crotch or fork of a tree; also see fiddleback.

Curl

(1) A programming environment for developing rich Internet applications (RIAs) from Curl, Inc., Cambridge, MA (www.curl.com). Conceived at MIT, Curl combines HTML markup with an object-oriented programming language. The user's machine requires the Curl runtime engine and browser plug-in for execution. The first Curl implementation was released in 2002. See RIA.

(2) (cURL) A command line utility for executing functions with URL-oriented protocols such as FTP and HTTP. Pronounced "C-URL," there are versions for Unix, Linux, Windows, Mac and other operating systems. For more information, visit http://curl.haxx.se.
References in periodicals archive ?
The new ferry boat will be built and in operation by May 1998, Curl said.
Slowly bring the right arm down, then curl the left one up in the same motion.
With tip of peeler, lift each curl to a flat surface to cool and firm.
Sebastian Professional Twisted Curl Reviver Styling Spray, PS18 Formula: Designed for anything from bouffy waves to serious corkscrew curls, this uses red seaweed extract for flexibility and control in one.
She founded her company Curls LLC in response to a gap in the market 14 years ago.
Like all Curls products, the jelly is also formulated to repair damaged tresses, leaving them bouncy, shiny and silky smooth.
Adding curl with a tongs is easier and simpler than using a wet roller set because the hair is dry when curled, and the curl can be added where desired, allowing you to add as much or as little as you want.
If the offense presents a formation with two outside receivers split wide, with the outside LB (Bandit or Will) may be stretched to get to the curl zone.
It has two heat settings, one for fine hair or loose curls and the other for thicker hair or tighter curls.
Always enhance the natural texture and curl that you have.
Evidence available thus far does not support the conclusion by Curl et al.