micron: see micrometermicrometer
. 1 Instrument used for measuring extremely small distances. Typical examples are devices used in astronomical telescopes to measure the apparent diameter of celestial objects and similar devices used in microscopes.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a fractional unit of length equal to 10-6 m or 10-3 mm. Its symbol is μ. The name “micron” was abolished by a resolution of the Thirteenth General Conference on Weights and Measures (1967); according to GOST (All-Union State Standard) 7663–55 and the rule for formation of the names of fractional units, it is to be called the micrometer (Russian mikrometr).
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
A unit of pressure equal to the pressure exerted by a column of mercury 1 micrometer high, having a density of 13.5951 grams per cubic centimeter, under the standard acceleration of gravity; equal to 0.133322387415 pascal; it differs from the millitorr by less than one part in seven million. Also known as micrometer of mercury.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A unit of length equal to a thousandth part of a millimeter or a millionth of a meter.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
i. A unit used to measure the effectiveness of filters. One micron is a micrometer, or one millionth of a meter (10−6).
ii. A unit of linear measurement equal to one millionth (10−6) of a meter. Also called a micrometer.
iii. The amount of pressure exerted by a column of mercury one-micrometer (one millionth of a meter) high under standard conditions. A micron of pressure is equal to .001 mm of mercury.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
a unit of length equal to 10--6 metre. It is being replaced by the micrometre, the equivalent SI unit
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
micronOne micrometer, which is one millionth of a meter or approximately 1/25,000 of an inch. The tiny elements that make up a transistor on a chip are measured in micrometers and nanometers. See process technology.
|Magnified 800 Times|
|This is an 800x magnification of a few bits of RAM from an early Motorola microcontroller. Although the actual size of what you see in this picture would fit on a pinhead, the elements in the devices on this chip are several microns wide, which is quite large by today's standards.|
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