Levitating objects can spin, glide and collide together — no magnets or magic tricks required. Using steady streams of sound waves, engineers maneuvered hovering toothpicks, coffee granules and water droplets through the air, a team from ETH Zurich reports July 15 in the Proceedings of the National Academy of Sciences. Scientists could use the touch-free technique to gently handle delicate or hazardous lab chemicals or to avoid contaminating cells in biological experiments. sciencenews.org/view/generic/id/351634/description/Sound_waves_put_levitation_on_the_move
Posted on: Wed, 17 Jul 2013 00:02:51 +0000
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