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  • Pechan Prism: Definition and Working Principle
    Article - 18 Jul 2014
    Pechan prisms comprise two air-spaced components, and have the ability to revert (flip horizontally) or invert (flip vertically) an image, depending upon it's orientation. It can be used in...
  • The Advantages and Applications of the Mach-Zehnder Interferometer
    Article - 1 Aug 2014
    The Mach–Zehnder interferometer is a simple highly configurable device used for demonstrating interference by division of amplitude.
  • 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.
  • 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.
  • 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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