+ - Physicists Do What Einstein Thought Impossible->
Submitted
by
Anonymous Coward
An anonymous reader writes "Einstein worked on Brownian motion (the movement of small particles in a fluid as they collide with water molecules) in 1905, but said it would be "impossible" to determine the speed and direction of a single particle during this dance. Now researchers have gone and done it, by suspending a dust-sized glass sphere in air (which slowed down its dance moves, since it had fewer collisions with spaced-out air molecules than it would have with water molecules). The researchers held the sphere in place with "laser chopsticks," and then watched how the glass bead bounced around to determine its direction and speed."
Link to Original Source
Link to Original Source
Physicists Do What Einstein Thought Impossible More Login
Physicists Do What Einstein Thought Impossible