News tagged with laser

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Nanotech process makes heat-resistant dyes

You may have heard about the hazards posed by pranksters who shine laser pointers at airplanes during takeoff or landing. One way to keep those beams of concentrated light from blinding pilots is to incorporate ...

Oct 03, 2014
4.7 / 5 (3) 0

Deformable mirror corrects errors

Very high power is needed to cut or weld using a laser beam. But this creates its own problem: the beam's energy deforms the mirrors that are focusing it to a point. When this happens, the beam expands and ...

May 14, 2014
5 / 5 (7) 1

Beavers keep riparian systems healthy

In some circles, beavers have long been considered pests that damage trees, clog up culverts, and build dams that inhibit or alter the natural flow of waterways. But, to two University of Wyoming researchers, ...

Feb 24, 2014
4.5 / 5 (6) 0

Harnessing randomness to improve lasers

Randomly arranged items usually have poor optical properties. The rough—or random—surface of a frosted-glass window, for example, obscures the view of an object. The optical industry therefore expends ...

Jan 15, 2014
3 / 5 (2) 0

More efficient transformer materials

Almost every electronic device contains a transformer. An important material used in their construction is electrical steel. Researchers have found a way to improve the performance of electrical steel and ...

Oct 01, 2014
5 / 5 (8) 0

Laser physics upside down

At the Vienna University of Technology a system of coupled lasers has been created which exhibits truly paradoxical behaviour: An increase in energy supply switches the lasers off, reducing the energy can ...

Jul 15, 2014
4.8 / 5 (4) 1