Laser tripod may lift mirror

By Science News Staff, 17:29 PM October 29, 2013

Guest post by Andrew Grant

The pressure exerted by three weak laser beams could hold up a small mirror. The laser tripod would levitate a 2-millimeter-wide mirror and stabilize it so that it barely vibrates, physicists propose October 29 in Physical Review Letters.

In the future researchers could use this type of carefully crafted laser-levitation system to detect subtle gravitational forces, which are difficult to measure at very small scales.

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