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Published on Sep 18, 2007
A wireform dragonfly with a built-in vibrating helical homopolar motor, which interacts to produce an audio-visual spark of life!
Using only a neodymium magnet, AA battery and one length of copper wire, Nature and Technology become melded in a simplistic embrace.
The homopolar motor works from the principle of the Lorentz force, discovered about 150 years ago. Basically, it states that when current flows through a conductor in a magnetic field it will experience a force on the charges in the conductor, producing torque.