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Results 8181 - 8190 of 8238 for Energy
  • LED Replaces CCFL Lighting for LCDs
    News - 24 Sep 2007
    Even if the next LCD you buy has pretty much the same characteristics as the last LCD you bought, a change is likely to have occurred behind the scenes. In display sizes below about 15 inches, the...
  • 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.
  • Multi-Photon Absorption - Non-Linear Spectroscopy
    Article - 15 Aug 2013
    Multi-photon absorption is a technique that is widely used in atomic and molecular physics to determine the properties of materials.
  • What is Optical Cross-Phase Modulation (XPM)?
    Article - 8 Oct 2013
    Optical cross phase modulation (XPM) may be described as a non-linear optical process where the wavelength of one light source affects the phase of another wave.
  • What is a Metal Halide Lamp?
    Article - 8 Oct 2013
    Metal halide lamps or metal halide arc lamps consist of a high performance arc discharge tube housed in an elliptical reflector that focuses the output into a microscopic optical train. The arc tube...
  • What is a Mercury Vapour Lamp?
    Article - 6 May 2014
    A mercury vapour lamp is a high-pressure electric arc discharge lamp that provides intense illumination over a selected range of wavelengths.
  • What is a Fluorescent Lamp?
    Article - 19 Sep 2014
    Fluorescent lamps are essentially cylindrical glass tubes that are coated with phosphorus and filled with a noble gas. They also contain a small amount of mercury inside. Conventionally, these lamps...
  • What is an LED?
    Article - 18 Sep 2014
    Light emitting diodes (LED) maybe defined as a semiconductor device that generates light by using the solid sate electronics.
  • What is a Photomultiplier?
    Article - 8 Jul 2013
    Photomultipliers or photomultiplier tubes (PMTs) belong to a class of vacuum tubes that convert photons into electric signal. PMTs are known for their ultra-fast response and high sensitivity. They...
  • What is a Collimator?
    Article - 10 Jun 2013
    A collimator may be described as a device that focuses or narrows a light beam or a stream of particles to be aligned in a different direction or reduce its cross section. The collimator focuses a...

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