Nerve-tapping neckband used in 'telepathic' chat
A neckband that translates thought into speech by picking up nerve signals has been used to demonstrate a "voiceless" phone call for the first time. Video
. The technology has previously been demonstrated for guiding a wheelchair with thoughts
. Company website
Physicists have 'solved' mystery of levitation
Professor Ulf Leonhardt and Dr Thomas Philbin, from the University of St Andrews in Scotland, have worked out a way of reversing ... the Casimir force
, so that it repels instead of attracts. Their discovery could ultimately lead to frictionless micro-machines with moving parts that levitate. But they say that, in principle at least, the same effect could be used to levitate bigger objects too, even a person.