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UV LEDs Enrich Lettuce

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WASHINGTON, May 19, 2009 – Exposure to light provided by ultraviolet LEDs makes lettuce darker and redder, boosting the levels of healthy antioxidants it contains, according to a team of plant physiologists. Steven Britz of the US Department of Agriculture in Beltsville, Md., and colleagues will present the research at the 2009 Conference on Lasers and Electro Optics/International Quantum Electronics Conference (CLEO/IQEC), which takes place May 31 to June 5 at the Baltimore Convention Center. The dark-red tinges on red leaf lettuce are the plant kingdom’s equivalent of suntan lotion. When bombarded with...Read full article

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    Published: May 2009
    Glossary
    light
    Electromagnetic radiation detectable by the eye, ranging in wavelength from about 400 to 750 nm. In photonic applications light can be considered to cover the nonvisible portion of the spectrum which includes the ultraviolet and the infrared.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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