News tagged with layer

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 ...

dateMay 14, 2014 in Optics & Photonics
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Fracking's environmental impacts scrutinised

(Phys.org) —Greenhouse gas emissions from the production and use of shale gas would be comparable to conventional natural gas, but the controversial energy source actually faired better than renewables on some environmental ...

dateSep 22, 2014 in Energy & Green Tech
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