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An image shows particles levitating in space between four sets of speakers. A Japanese team says they have used the system to manipulate items in mid-air.
January 2, 2014 Researchers in Tokyo have put a new twist on the use of sound to suspend objects in air. They've used ultrasonic standing waves to trap pieces of wood, metal and water – and even move them around.
March 2, 2012 Obama told The Atlantic that he doesn't "bluff" as president of the U.S. when he says he's willing to use the military to stop Iran from gaining a nuclear weapon... Maryland became the eighth state to legalize gay marriage... Virginia approved a controversial anti-abortion bill requiring ultrasound which the governor says he will sign.
February 24, 2012 Virginia Gov. Robert McDonnell and other supporters of the original ultrasound bill clearly found themselves in an embarrassing and politically untenable position earlier in the week from which they've had to try and extricate themselves.
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