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Results 4341 - 4350 of 4480 for Communications
  • Optical Atomic Clock Could Provide More Accurate Definition of a Second
    Article - 10 Jul 2013
    An international research team led by the Paris Observatory has developed an optical atomic clock based on strontium.
  • What is Four-Wave Mixing?
    Article - 1 Oct 2014
    Four-wave mixing (FWM) is a non-linear optical process where two other waves are produced by the interaction of two wavelengths. Four-wave mixing can take place in any kind of material.
  • What is a Photodiode?
    Article - 5 Jun 2013
    A photodiode can be described as a photo detector that is capable of converting incident light into voltage or current.
  • Storage of a Single Photon in a Quantum Memory
    News - 24 Jul 2007
    A series of publications in the journal Nature highlights the race among competing research groups toward the long-anticipated goal of quantum networking. In one of three papers published the...
  • Radial-Polarization Interferometry Technique Improves Sensitivity and Resolution Compared to Conventional
    Article - 17 Oct 2011
    This research explores a novel approach to interferometry allowing measurement of smaller phase changes when compared to traditional Michelson interferometer ensuring higher resolution.
  • Determining Refractive Index Using PR21 Process Refractometer
    Article - 29 Apr 2010
    The process refractometer PR21 of A.KRÜSS Optronics, Hamburg, is a universal measuring instrument for determining the refractive index and therefore the concentration of a substance in liquid in a...
  • New Class of Ultra-Thin Polymer Films
    News - 15 Jul 2007
    They said it couldn't be done. And that's what really motivated UD polymer chemist Chris Snively and Jochen Lauterbach, professor of chemical engineering at UD. For years, polymer...
  • Researchers Develop Next Generation of Screening Devices
    News - 15 Jul 2007
    It might not be science fiction much longer. Researchers at Sandia National Laboratories are developing the next generation of screening devices that will identify hazardous and toxic materials...
  • World's First Anti-Reflection Coating
    News - 13 Jul 2007
    A team of researchers from Rensselaer Polytechnic Institute has created the world's first material that reflects virtually no light. Reporting in the March issue of Nature Photonics, they...
  • Optical Cloaking Device
    News - 13 Jul 2007
    Researchers using nanotechnology have taken a step toward creating an "optical cloaking" device that could render objects invisible by guiding light around anything placed inside this...

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