image credit: L. Sekaric & H. Craighead, Cornell University; larger image
Cornell News: New Nanoguitar
Unlike the world's smallest guitar, this one, about the size of five red blood cells, can be played--by a 40 megahertz laser beam. To learn more, see Cornell News: New Nanoguitar. The Cornell physicists have also produced a nanoharp.
Simple Harmonic Motion
In resonance, an applied periodic force makes an object vibrate at its natural frequency. To find out more, visit Hyperphysics: Resonance. To learn about simple harmonic motion, visit the Hyperphysics Simple Harmonic Motion.