In a recent article,1 Greenslade presents a nomograph from an old textbook describing a geometrical construction for the equivalent resistance of two resistors in parallel. Greenslade's final remark is that the motivation for this construction “is obscure.” When I saw the article, I realized I could make an educated guess for the motivation. In this paper I will use the nomograph discovered by Greenslade as a springboard and present some of my thoughts on the geometrical presentation of physics in hopes to amuse the experts.
Topics
Educational aids
REFERENCES
1.
Thomas B.
Greenslade
, “A nomograph for resistors in parallel
,” Phys. Teach.
40
, 458
(2002
).
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© 2003 American Association of Physics Teachers.
2003
American Association of Physics Teachers
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