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Non-logarithmic Slide Rule

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This Demonstration illustrates multiplication by two non-logarithmic slide rules.

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In the first case, define . Then . This slide rule has the four scales , , , and .

In the second case, define . Then . This slide rule has the four scales: , , , and , but and can be considered the same.

When , read on the bottom scale below on the scale.

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Contributed by: Izidor Hafner (August 2012)
Open content licensed under CC BY-NC-SA

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Reference

[1] J. Bryant and C. Sangwin, How Round Is Your Circle?, Princeton, NJ: Princeton University Press, 2008 pp. 247–248.

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