Glasgow scientists slow down light to the speed of sound,

Issued: Sun, 15 Jan 2012 13:17:00 GMT

"SCIENTISTS at Glasgow University have slowed down light to the speed of sound for the first time using a technique that could find a place in the super computers of the future.

The discovery has been hailed as a possible indicator that light could be used in sophisticated quantum computers, which will eventually replace current technology.

The scientists shone a simple image of an ellipse through a ruby which was rotating at the same speed as a dentist’s drill.

As it passed through the jewel, the light beam became a million times slower but also rotated, or “dragged”, by five degrees –enough to be noticed by the naked eye. Most importantly, the image emerged unaltered from the ruby."

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