Search and Discovery
Do the all‐pervasive low‐frequency electromagnetic fields of modern life threaten our health? Most probably not, judging from comparisons with the natural fields present in the environment and in our bodies.
When Chester Carlson invented a means of copying images using sulfur film and lycopodium powder in 1938, no one could have foreseen the advances in materials science and other developments that would turn his nascent technology into today's burgeoning business.
Using computer‐controlled digital video, students con view and analyze the physics of events as common as the snapping of a towel, as graceful as the motion of a dancer or as extraordinary as the collapse of the Tacoma Narrows Bridge.