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Results 14171 - 14180 of 15120 for Lighting
  • Hermite-Gaussian Modes - Explanation and Equation
    Article - 15 May 2014
    Propagation of light in a free space or a homogenous optical medium changes the intensity profile of light. In certain electric field amplitude distributions, the shape of the amplitude profile...
  • Nanophotonics Set to Benefit From Collaboration
    News - 24 Oct 2007
    Universities from the UK and Taiwan have joined forces in a project that they hope will combine the nanophotonics expertise of the UK with the industrial links of Taiwan. The collaboration is...
  • Improved Version of Z is Capable of Firing More Often With Greater Precision
    News - 23 Oct 2007
    Sandia National Laboratories' Z machine, the world's largest producer of X-rays, shook the ground for several hundred yards in every direction for the first time since July 2006, when the...
  • Chromatic Dispersion - Definition and Applications
    Article - 15 May 2014
    Chromatic dispersion is the change in refractive index due to change in wavelength. Dispersion is the phenomenon that causes light to be separated into various colors while passing through a prism....
  • Investigators Have Identified Cell That Gives Rise to Eye Cancer
    News - 22 Oct 2007
    Investigators at St. Jude Children's Research Hospital have identified the cell that gives rise to the eye cancer retinoblastoma, disproving a long-standing principle of nerve growth and...
  • New Camera Technology Offers Unparalleled Telescope Photography
    News - 22 Oct 2007
    Traditionally, space photography has posed a great challenge to astronomers. The thickness of the Earth's atmosphere has rendered earth-based telescopes far less effective than their space-based...
  • Wavefront - Introduction and References
    Article - 29 May 2014
    A wavefront may be described as a surface over which an optical wave presents a constant phase. In other words, a wave front may be the surface over which a wave represents a crest (maximum point) or...
  • Radiant Flux - Explanation and References
    Article - 29 May 2014
    Radiant flux is the energy per unit time that is radiated from an optical source, expressed in terms of Watts.
  • Quantum Efficiency - Introduction and References
    Article - 29 May 2014
    Quantum efficiency (QE) may be defined as the fraction of incident photons that are recorded by a photo detector. The quantum efficiency of a photosensitive device is measured in terms of electrons...
  • Laser Mode Locking - Theory and Applications
    Article - 29 May 2014
    Mode locking is a technique used to obtain ultra short pulses from lasers. Lasers that are mode locked are capable of producing pulses having pulse widths in the order of sub-pico seconds or even...

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