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Welcome to YourArtSource.com
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| Definitions (A) |
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Abstract - Nonrepresentational art.
Acid - A class of chemical compounds commonly used in printmaking and glass etching to eat away unprotected areas of the surface to create a design.
Acrylic - A water-soluble paint made with pigments and synthetic resin; used as a fast-drying alternative to oil paint.
Acrylic Paint - (painting) Made from pigments dispersed in a polymethyl methacrylate vehicle. Mostly soluble in water and fast drying. Less translucent than oil paint.
Aesthetic - A philosophical theory as to what is beautiful (esthetic). Concerning or characterized by an appreciation of beauty or good taste.
Airbrush - A method of spraying dyes or paints onto a surface using a brush device driven by an air compressor.
Alabaster - A fine-textured, usually white, gypsum that is easily carved and translucent when thin.
Amorphous -Without specific form.
Analogous Colors - Colors that are closely related to each other and generally lie next to each other on the color wheel. Often used in groups of three or four, they are low in
contrast and therefore blend well.
Annealing - (glass) The gradual cooling of glass from higher working temperatures to room temperature, in order to reduce the amount of internal strain inherent in glass.
(metal) The process of rendering metal more malleable by heating it to a specific temperature.
AnodizingÊ- (metal) Method of dyeing an aluminum surface by coating the metal with an anodic film of aluminum oxide while it is in an acid bath. The metal is then washed
and immersed in organic dyes, allowing the oxide film to absorb the dye, followed by a final washing, drying and sealing with lanolin.
Anticlastic Raising - (metal) The process of forging a piece of metal so that it has opposite curvature at a given point. The metal is worked in a way that stretches the outside
areas of the metal and creates a concave curve, while the center section of the metal is compressed and forced into a convex curve.
Antique Glass - Glass which is mouth-blown into a cylinder, scored along its length, reheated and allowed to flatten into a sheet. The term antique describes the method by
which it was made, not its age.
Appliqu - A technique whereby pieces of fabric are layered on top of one another and joined with decorative stitches.
Aquatint - (prints & drawings) Printmaking process used to create areas of solid color, as well as gradations of white through black tones. Usually has the appearance of
transparent watercolor.
Archival Quality - Designation for paper or inks of high permanence and durability. A non-technical term used to denote material that will last over long periods
(several hundred years) with minimal deterioration because of its chemical stability and physical durability.
Armature - (ceramics) A framework around which clay can be modeled.
Artifact - A product of human workmanship of archeological and/or historical significance.
Ash - (ceramics) The residue ash made by burning tree, plant, or vegetable material; can be used alone or with other materials for glaze at stoneware temperatures; it is traditional
in Asia where wood has been a common fuel; volcanic ash can also be used.
Assemblage - The technique of combining various elements, especially found objects, into a three-dimensional work of art.
Atmosphere - (glass) In lamp working, this refers specifically to the conditions within the torch flame. The atmosphere of the flame can be "oxidizing" (high in oxygen) or "reducing"
(low in oxygen). A reducing atmosphere will affect some colored glasses, turning the surface black or otherwise discoloring it. A flame that is reducing is generally softer and cooler
that a flame that is oxidizing. Glass color is also sometimes affected by the atmosphere within the kiln during annealing.
Autochrome - (photography) A practical, additive photo process perfected in 1907 using a glass plate dusted with transparent grains of potato starch dyed red, green and blue. These
starch grains act as tiny color filters, allowing light to affect a piece of film sandwiched behind the glass plate. Film is then reverse processed into a positive transparency. Graininess
and spots often appear in the finished image because starch grains could not be evenly mixed.
Aventurine - (glass) Glass with particles of undissolved copper distributed throughout. It has a sparkling, gold-like appearance. This effect is achieved by super-saturating a batch of
glass (in the furnace) with copper, until the copper crystallizes out.
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