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Results 14191 - 14200 of 15120 for Lighting
  • Fresnel vs Fraunhoffer Diffraction
    Article - 1 Aug 2014
    Diffraction is the slight bending of light as it travels around the edges of an object/slit or after passing through an opening.
  • Diverging Lens - Definition and Characteristics
    Article - 6 May 2014
    A lens is an optical device that transmits light by refraction; the incident beam is either converged or diverged based on the nature of the lens.
  • The History of the Catoptric Optical System
    Article - 6 Aug 2014
    Catoptrics has been introduced way back in time by the ancient Greeks. There were two main ancient Greek texts that mentioned catoptrics.Catoptric systems are those optical systems that employ only...
  • Coma – Definition and Causes of Comatic Optical Aberration
    Article - 12 Feb 2014
    Optical aberrations are deviations from geometric optics that are mainly caused by faults in optical lenses.
  • The Trilobite Data Show a Different Process at Work
    News - 27 Sep 2007
    We've never seen anything quite like it," says solar physicist Lika Guhathakurta from NASA headquarters. Last week she sat in an audience of nearly two hundred colleagues at the "Living with a...
  • Using a Smartphone for Virus Detection
    Article - 26 Sep 2013
    Advancements in smartphones are continuing to progress with an effort to making these phones capable of being applied in sophisticated fields of application including laboratory analysis.
  • Boeing's Raygun Jumbo Jet
    News - 20 Sep 2007
    Senators are planning to cut budgets for the space interceptor portion of the controversial US missile defence programme, according to reports. However, it appears that a complementary scheme to blast...
  • What is High Harmonic Generation?
    Article - 6 May 2014
    High harmonic generation may be described as an optical process of generating high harmonics of frequency from a fixed frequency laser light. For generation of high harmonics a high power laser source...
  • What is a PLED (Polymer LED)?
    Article - 18 Jun 2013
    Polymer light emitting diode (PLED) is an LED whose emitting layer is made of a polymer material. This could make a flexible and easy-to-manufacture light source.
  • What is an Optical Longpass Filter?
    Article - 25 Apr 2014
    An optical longpass filter is defined as an optical filter that passes all wavelengths from a given wavelength to the red of that wavelength.

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