Tom Shannon: The painter and the pendulum

Simple and elegant idea carried over for more than 20 years; first pendulum made in the late 70’s.

A quote on PERSISTENCE: “Nothing in this world can take the place of persistence. Talent will not; nothing is more common than unsuccessful people with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan "press on" has solved and always will solve the problems of the human race” Calvin Coolidge quotes (American 30th President of the United States, 1872-1933)


http://www.ted.com/talks/lang/eng/tom_shannon_the_painter_and_the_pendulum.html