Physicists build reversible laser tractor beam
Canberra, Australia (SPX) Oct 21, 2014 - Laser physicists have built a tractor beam that can repel and attract objects, using a hollow laser beam that is bright around the edges and dark in its centre. It is the first long-distance optical tractor beam and moved particles one fifth of a millimetre in diameter a distance of up to 20 centimetres, around 100 times further than previous experiments. "Demonstration of a large sc ... more
No comments:
Post a Comment