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Jun 7, 2023 · Understanding Slide Rules. Download Article. 1. Notice the gaps between numbers. Unlike an ordinary ruler, the numbers on a slide rule scale aren't spaced on an even, linear scale. Instead, the numbers are spaced using a special "logarithmic" formula, closer together on one side than the other.
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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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Slide rules are really designed for various calculations involving multiplication and division. Unless you are an engineer, you will not use all of the features built into a slide rule. But, a slide rule does force the user to be more involved in any mathematical calculation.
Jun 14, 2019 · A slide rule is a multi-purpose calculator tool. It’s what people used to do math in the days before calculators and now ever-present phones and computers. It looks like a ruler, but has...
At its heart, the slide rule is nothing more than a simple and elegant solution for solving basic mathematical calculations. What I'll attempt to do on this page is to explain where the slide rule came from, and how it works.
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. A cursor is fixed in the center of the "window" to allow for accurate readings.
Slide rules are analog computing devices marked with linear or logarithmic scales, some on a moving slide and some stationary on the base of the instrument, so that two numbers may be added or multiplied by aligning the slide.
