News tagged with laser beam

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Physicists freeze motion of light for a minute

Physicists in Darmstadt have been able to stop something that has the greatest possible speed and that never really stops. We're talking about light. Already a decade ago, physicists stopped it very for a short moment. In ...

Aug 06, 2013
4.8 / 5 (29) 7 | with audio podcast

Taking the 'random' out of a random laser

(Phys.org) —Random Lasers are tiny structures emitting light irregularly into different directions. Scientists at the Vienna University of Technology have now shown that these exotic light sources can be ...

Jul 15, 2013
4.4 / 5 (8) 3 | with audio podcast

A quantum simulator for magnetic materials

Physicists understand perfectly well why a fridge magnet sticks to certain metallic surfaces. But there are more exotic forms of magnetism whose properties remain unclear, despite decades of intense research. ...

May 23, 2013
4.5 / 5 (8) 1 | with audio podcast

Laser instead of drill

If the brain starts to swell after a stroke, surgery is often the only treatment option – one in which the physicians open the patient's cranial vault. Up to now, they would reach for the drill and the ...

May 15, 2013
4.3 / 5 (3) 1

Liquid lens shrinks laser measuring device

Lasers are widely used in many areas of science, industry and medicine and the quality of the beams they produce needs to be measured to make sure they perform correctly. As electronic devices become smaller ...

May 10, 2013
5 / 5 (3) 0

Elucidating energy shifts in optical tweezers

A small piece of paper sticks to an electrically charged plastic ruler. The principle of this simple classroom physics experiment is applied at the microscopic scale by so-called optical tweezers to get the likes of polystyrene ...

May 08, 2013
5 / 5 (1) 0

Quantum optics with microwaves

(Phys.org) —Physicists at ETH Zurich have demonstrated one of the quintessential effects of quantum optics—known as the Hong-Ou-Mandel effect—with microwaves, whose frequency is 100'000 times lower ...

May 08, 2013
4.9 / 5 (9) 0 | with audio podcast