# subtend

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Related to subtends: Unit circle

## subtend

[səb′tend]
(botany)
To lie adjacent to and below another structure, often enclosing it.
(mathematics)
A line segment or an arc of a circle subtends an angle with vertex at a specified point if the end points of the line segment or arc lie on the sides of the angle.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The angle [PSI] is defined in either of two ways: either 2[PSI] is the full angle subtended by the detection pupil at the focusing optic, or 2 [PSI] is the full angle subtended by the blackbody cavity opening at the pinhole aperture.
The book starts by articulating the bold proposal that picturing is a matter of sameness of subtended solid angles and proceeds to modify that proposal as necessary to deal with the full range of pictorial subject matters and styles by appealing to the conceptual resources of perceptual experience.
In its place, Donato tends to use "rhetoric" as the representational system that promises a return to an original plenitude, whether it be called "history" or "nature." I would argue, in fact, that each chapter of the book deconstructs those categories or metaphysical systems that subtend literary representation.
where: F = flux density (W/[m.sup.2]-Hz) k = Boltzmann's constant (1.38 x [10.sup.-23] J/K) T = physical temperature of the blackbody (K) [lambda] = wavelength of the RF radiation (m) and [omega] = solid angle subtended by the blackbody source (steradians).
This ratio of distance-to-reticle (angle) is consistent with range: At 300 yards the distance from crosshairs to post will subtend 18 inches, at 400 yards 24 inches, at 500 yards 30 inches, and so on.
This connection subtends more recent anti-immigrant sentiment toward Hispanics in North America.
The outside diameter of the circle subtends 18 inches (width of a man's shoulders) at 100 yards.
* A nautical mile is the length of the great circle arc which subtends an angle of one minute at the centre of the earth.
As just a rough guide, the circle that surrounds the dot subtends the approximate diameter of a 12-gauge trap load shot cloud at 30 yards.
This is perhaps most visible in the section devoted to gender (Raymond-Jean Frontain's stimulating essay in particular), but it subtends the other sections as well.
But the star, a K0 giant estimated to be 550 light-years away, probably subtends just 0.0008".
As in Tafuri's article on Giulio, the theme of license stands at the center of Payne's discussions, which, for all the emphasis on intertextuality, ult imately propose a psychological inquiry; in her view, a "cultural anxiety" concerning appropriation subtends learned discourse in general in the Renaissance, not just in the domain of architecture.

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