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Karl Sims: "How to make a three-pendulum rotary harmonograph"
http://www.karlsims.com/harmonograph/index.htmlhere ...
1920-1930.com: "How to Make Home-Made Harmonographs"
http://www.192030.com/toys/things-to-make/harmonographs.html
Copyright notice:
The PDF resource are freely provided for personal and research purposes only.
Please no unauthorized duplication.
BOOKS
WEB RESOURCES
ARTICLES
Harmonic Vibrations
and
Vibration Figures
Edited by Herbert C. Newton
(Circa 1909)
"Pendulum Autographs" by Hubert Airy, Nature Magazine, 17 August 1871
Read online at Internet Archive
https://archive.org/stream/nature41871lock#page/312/mode/2up
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