Light and Optics

LED Area Luminaire provides 20 years of nighttime operation.

9 Feb 2012

Replacing 100-400 W metal halide luminaires, D-Series Size 1 LED Luminaire features modular design to facilitate maintenance and light engine upgrades. Unit is available with dimming capabilities and ROAM® wireless monitoring and control compatibility. Finished in zinc-infused powder coat paint that resists corrosion and weathering, luminaire produces zero uplight, consistent with LEED® and ...

New, more targeted way to stimulate neurons in the brain

9 Feb 2012

By harnessing quantum dots—tiny light-emitting semiconductor particles a few billionths of a meter across—researchers at the University of Washington (UW) have developed a new and vastly more targeted way to stimulate neurons in the brain.

Forget transparent aluminum: researchers make iron invisible to X-rays

8 Feb 2012

Transparency is generally a property of a material's density or crystal structure, and varies depending on the wavelength of light. However, transparency can also be achieved by exploiting quantum interference between energy level transitions in atoms. Up until now, such transparency has been confined to optical wavelengths, due to the typical energies of atomic transitions. Transitioning ...