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A brown treesnake on a barbed wire fence. The brown treesnake (Boiga irregularis) is one of the primary threats to the survival of the Guam rail; the introduction of the snake has been catastrophic for Guam's biodiversity. The snake was likely passively introduced to the island as a stowaway in a military cargo ship after World War II.
Elements of art – group of aspects of a work of art used in teaching and analysis, in combination with the principles of art. They are texture, form, line, color, value, and shape. Perspective – the principle of creating the illusion of 3-dimensionality on a 2-dimensional source such as paper.
Silverpoint, red chalk, and traces of black pencil on white-coated paper, Kunstmuseum Basel. Silverpoint (one of several types of metalpoint) is a traditional drawing technique and tool first used by medieval scribes on manuscripts.
Contour drawing is an essential technique in the field of art because it is a strong foundation for any drawing or painting; it can potentially modify a subjects’ form through variation within the lines. It is widely accepted among schools, art institutions, and colleges as an effective training aid and discipline [3] for beginner artists. In ...
String art, created with thread and paper A string art representing a projection of the 8-dimensional 4 21 polytope Quadratic Béziers in string art: The end points (•) and control point (×) define the quadratic Bézier curve (⋯). The arc is a segment of a parabola.
In computing terminology, black-and-white is sometimes used to refer to a binary image consisting solely of pure black pixels and pure white ones; what would normally be called a black-and-white image, that is, an image containing shades of gray, is referred to in this context as grayscale. [2]
Hence, blueline drawings that are used as engineering working copy prints have to be protected when not in use by storing them in flat files in the dark. Incandescent lighting was often used in areas where blueline engineering prints needed to be posted on a wall for long periods to hinder rapid fading.
Georgia O'Keeffe, Untitled, vase of flowers, watercolor on paper, 17 + 3 ⁄ 4 in × 11 + 1 ⁄ 2 in (45.1 cm × 29.2 cm), between 1903 and 1905. O'Keeffe experimented with depicting flowers in her high school art class. Her teacher explained how important it was to examine the flower before drawing it.