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 keyboard contains 27 unique curly hair designs, with selectable skin tone and hair color -- resulting in a total of 131 curly emoji variations, including seven animated GIFs to bring curl expression and love to life
Meanwhile, the Be Curly Detangling Masque ([euro]30) promises to "fight frizz and inject hydration" and to "separate even the most tangled curls and coils".
The patterns that fill up the couple's skin are mainly influenced by Asian art, but Curly warns against reading any great significance into the motifs.
The only tricky bit, if your predilection is for a REALLY HUGE Curly Wurly, is how to coat it in the chocolate.
We will never forget you Granddad Curly xxx) WOODS - CURLY November 5th 2013 Curly mate, too fast too soon, People are remembered by the memories they leave behind we will remember you for a very long time.
Firefighter Aled Morris with Curly Wurly The pet went missing while out walking near the old Glamorganshire canal near Coryton, Cardiff, at lunchtime.
Ten years after the hapless assistant supermarket manager left the show, to the distress of his legion of fans, bosses want to bring back the Curly magic.
McDonald's in the Philippines added the curly fries to its menu on Aug.
When they are out of sight to potential Curly Wurly thieves, they are liable to be out of one's own sight too.
The researchers observed that both insecticides reduced the incidence of curly top in the fields.
At a distance, the curly-coated retriever is often mistakenlv identified as a Labrador because the curly shares the Lab's conformation and passion for finding, flushing and fetching gamebirds.