1E20.17 - Spirograph
The various wheel and gear systems of a Spirograph set can be used to show Foucault pendulum motion and patterns. This apparatus can also be used to show retrograde motion in astronomy.
- Joseph D. Romano, "Foucault's Pendulum as a Spirograph", TPT, Vol. 35, # 3, p. 182-183, March 1997.
- Takao Takeuchi, "Physics is Fun with Sprirograph", TPT, Vol. 35, # 4, p. 199, (April 1997).
- J. Gerard Anderson, "An Electronic Spirograph", TPT, Vol. 12, # 2, Feb. 1974, p. 89.
- Francis S. Lestingi, "Projection Epicycles", TPT, Vol. 11, # 3, March 1973, p. 249.
- Francis S. Lestingi, "A Projection Moving - Eccentric Model", TPT, Vol. 11, # 5, May 1973, p. 315.
- George M. Hopkins', "The Cycloidotrope", Experimental Science, Volume Two, p. 133.
- Martin Gardner, "Spin a Hypocycloid", Entertaining Science Experiments with Everyday Objects, p. 54.
- "How to Make a Wondergraph", The Girl Mechanic, pp. 25 - 30, ISBN 978-1-58816-610-4
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