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slide rule

The Columbia Encyclopedia, Sixth Edition
slide rule instrument for making numerical computations and readings, the results of which may be read easily and quickly after performing simple mechanical manipulations. Multiplication and division, finding of powers and roots, and other more complicated calculations may be performed with a slide rule. Based on John Napier's principle of the logarithm , it came into use after Edmund Gunter created a logarithmic scale in 1620. Gunter's rule consisted of a straight line on which numbers were spaced at intervals proportional to their common logarithms. Using this scale, William Oughtred and... Read more
Slide Rule
Mathematics Slide Rule Pocket calculators only came into common use in the 1970s. Digital computers...by engineers and scientists who dealt with math in their work was the slide rule. A slide rule is actually a simple form of what is called an analog computer, a device... Read more
Slide Rule
Computer Sciences Slide Rule The slide rule is an analog device for performing mathematical computations. The first slide rule was created in 1630 by British mathematician William Oughtred (1574... Read more

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The slide rule today: respect for the past. (history of the slide rule) (Input-Output) (Column)
Magazine article from: Mechanical Engineering-CIME; 7/1/1993; ; 700+ words ; For 350 years the slide rule was an indispensible logarithmic calculating...Scotland laid the foundation for the slide rule. In 1620, Edmund Gunter marked a 24...rules. As with other collectibles, a slide rule's value today depends largely on its... Read more
Slide rules of the stanley rule & level company and other American makers
Magazine article from: The Chronicle of the Early American Industries Association, Inc.; 9/1/2001; ; 700+ words ; ...source of slide rules. The "modern" slide rule era in America, which lasted until...architect or early-day engineer wanted a slide rule in the mid-1800s, his choice was...development in 1808 of the engineers' slide rule by Joshua Routledge (1773-1829) of... Read more
Working slide rule is world's largest at 352 feet long.(Knight Ridder Newspapers)
Newspaper article from: Knight Ridder/Tribune News Service; 3/6/2001; ; 596 words ; ...most people even `thought' about a slide rule, but Fort Worth became home to the...to them that theirs be a working slide rule. They said they weren't sure if the...business cards that identify him as The Slide Rule Guy. He even has a Web site: www... Read more
Slides rule: before the calculator, before the computer, a simple tool that worked remains far from forgotten.(Purdue University)
Magazine article from: Mechanical Engineering-CIME; 12/1/2005; ; 700+ words ; ...the moon, has promised to send his slide rule, as well. The exhibit is more than...the computer may have usurped the slide rule's place in the engineer's toolbox...There was a point in time when the slide rule was king, he said. During a period... Read more
THE PASSING OF THE VENERABLE SLIDE RULE
Newspaper article from: The Boston Globe; 1/18/1993; ; 700+ words ; My father's slide rule. I found it at the back of a bureau drawer...Keuffel & Esser log-log-duplex-decitrig slide rule from the 1940s, with white plastic scales...the calculations he performed on his slide rule. It was enough for a tidy, self- contained... Read more
SLIDE RULE'S GLORY DAYS RECALLED
Newspaper article from: Dayton Daily News; 6/13/2002; ; 439 words ; ...batteries." More accurately, "that" is a slide rule, or Slipstick, and Beafore is one...radios and old cars," he said. The slide rule, he said, reminds him of days "when you used a slide rule, you had to know the basic rules... Read more
A GOODIE BUT AN OLDIE ; XENIA MAN REMEMBERS SLIDE RULE'S GLORY DAYS
Newspaper article from: Dayton Daily News; 5/23/2002; ; 474 words ; ...batteries." More accurately, "that" is a slide rule, or Slipstick, and Beafore is one...like the PT Cruiser," he said. The slide rule, he said, reminds him of days "when you used a slide rule, you had to know the basic rules... Read more
SLIDES RULE
Magazine article from: Mechanical Engineering; 12/1/2005; ; 700+ words ; ...the moon, has promised to send his slide rule, as well. The exhibit is more than...the computer may have usurped the slide rule's place in the engineer's toolbox...There was a point in time when the slide rule was king," he said. "During a period... Read more
Slide rules rule!(Stress Relief)
Magazine article from: Advanced Materials & Processes; 10/1/2004; 367 words ; ...There was a point in time when the slide rule was king, says Dr. James Alleman...any magnitude would have required a slide rule. Then, in the early 1970s Hewlett...the HP-35, signaling an end to the slide rule's dominance in scientific computing... Read more
FOR CURATOR, SLIDE RULES ARE CUTTING EDGE
Newspaper article from: The Boston Globe; 5/10/2005; ; 597 words ; ...simple relic of Nerd-dom to many, the slide rule is "one of the most technologically...ranging from a 6-foot-tall "teaching" slide rule to a hand-held aviation version Douglas...acquisition of the Keuffel and Esser Co. slide rule collection one of the largest corporate... Read more

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