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Kardos (1348077) writes "Scientists at the University of Tokyo have demonstrated levitation and movement of objects in three dimensions using focused sound waves. The technology uses a phased array of speakers to produce an "ultrasonic focal point" capable of suspending small objects. The position of the focal point can be moved (gradually) leading to a control of an object's position in three dimensions. Parlour tricks aside, what are the uses and limitations of this technology? What would be the largest object one might control with such an array?" Link to Original Source top
Kardos (1348077) writes "Despite the denial of rumours, Hawking has accepted an appointment as a distinguished research chair at the Perimeter Institute in Waterloo, Ontario Canada. It appears that Hawking will only spend summers in Canada but should lead to a close partnership between the recently founded institute and Cambridge University." Link to Original Source