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A slide rule is a hand -operated mechanical calculator consisting of slidable rulers for evaluating mathematical operations such as multiplication, division, exponents, roots, logarithms, and trigonometry. It is one of the simplest analog computers. [1] [2]
Slide rule, a device consisting of graduated scales capable of relative movement, by means of which simple calculations may be carried out mechanically. Typical slide rules contain scales for multiplying, dividing, and extracting square roots, and some also contain scales for calculating
- The Editors of Encyclopaedia Britannica
7 de jun. de 2023 · Reviewed by Grace Imson, MA. Last Updated: June 7, 2023 Fact Checked. To someone who doesn't know how to use it, a slide rule looks like a ruler designed by Picasso. There are at least three different scales, and on most of them the numbers aren't even spaced evenly apart.
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Additionally, The slide rule does not tell you where the decimal point is located in the answer. To do a calculation with a slide rule you reduce all numbers to scientific notation with 2-4 digits then use the slide rule to perform the basic operations. In a separate calculation you find the order of magnitude by combining the powers of 10.
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Components of A Slide RuleAlso See As VRML (lets you walk around, zoom in/out around a 3D model) The slide rule is actually made of three bars that are fixed together. The sliding center bar is sandwiched by the outer bars which are fixed with respect to each other. The metal "window" is inserted over the slide rule to act as a place holder.
The Mathematics Collection in the National Museum of American History contains over 200 slide rules, one manufacturer's display on how a slide rule is made, nearly 30 replacement and broken parts, and over 40 pieces of documentation for the collection, such as instruction manuals and warranties.
International Slide Rule Museum (ISRM) ISRM is the world's largest free digital repository of all things concerning slide rules and other math artifacts. As of 2023, ISRM is celebrating its 20th Anniversary!
