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spark,in electricity: see arcarc,
in electricity, highly luminous and intensely hot discharge of electricity between two electrodes. The arc was discovered early in the 19th cent. by the English scientist Sir Humphry Davy, who so named it because of its shape.
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A short-duration electric discharge due to a sudden breakdown of air or some other dielectric material separating two terminals, accompanied by a momentary flash of light. Also known as electric spark; spark discharge; sparkover.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
a. a momentary flash of light accompanied by a sharp crackling noise, produced by a sudden electrical discharge through the air or some other insulating medium between two points
b. the electrical discharge itself
c. (as modifier): a spark gap
2. a small piece of diamond, as used in the cutting of glass
Dame Muriel (Sarah). born 1918, British novelist and writer; her novels include Memento Mori (1959), The Prime of Miss Jean Brodie (1961), The Takeover (1976), A Far Cry from Kensington (1988), Symposium (1990), and The Finishing School (2004)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
An annotated subset of Ada supported by tools supplied by Praxis Critical Systems (originally by PVL).
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
SparkAn open source big data framework from the Apache Software Foundation. Spark is used to analyze huge amounts of real-time data in RAM in contrast to Hadoop (another Apache project), which continuously writes to the storage drive. As a result, Spark is generally many times faster. Because Spark does not have its own distributed file system, it is often used in conjunction with the Hadoop Distributed File System. See Hadoop and big data.
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