Quadratic Formula Nomograph

https://www.gathering4gardner.org/g4g14gift/ExchangeArchive-QFnomogram-G14-067-1.jpg
https://www.gathering4gardner.org/g4g14gift/ExchangeArchive-QFnomogram-G14-067-2.jpg

Source

G4G14

Title

Quadratic Formula Nomograph

Creator

ET Whittaker

Contributor

Chris Staecker

Subject

Recreational Math

Description

This is a cute graphical computing device which finds the roots of a quadratic polynomial. Stretch the (included) string between two scales representing the coefficients of the polynomial, and it tells you the roots! This device is based on an original 1915 design by E.T. Whittaker.

Identifier

G14-067

Collection

Citation

ET Whittaker, “Quadratic Formula Nomograph,” G4G Gift Exchange Archive, accessed April 16, 2024, https://g4gexchangearchive.omeka.net/items/show/1052.

Comments

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