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  • Neutral Density Filter - Definition and Properties
    Article - 18 Sep 2014
    A neutral density filter is a semi-transparent glass filter used in front of a camera lens to reduce or vary the intensity of incoming light without affecting the color rendition.
  • What is Brewster's Angle?
    Article - 1 Aug 2014
    Brewster’s angle or polarizing angle is defined as an angle at which an incident beam of unpolarized light is reflected after complete polarization.
  • What is a Wavenumber?
    Article - 16 Sep 2014
    Wavenumber is defined as the number of complete wave cycles per unit length of a linear space. It can also be referred to as the spatial frequency of the waves represented in radians per unit distance...
  • Enhancing the Lateral Resolution of White Light Optical Profilers Using AcuityXR Technology
    Article - 27 Jan 2014
    White light interferometry is one of the most rapid, precise and versatile surface measurement techniques available to researchers and manufacturers.
  • The Applications of Refraction
    Article - 19 Sep 2014
    Refraction is a phenomenon that happens when waves passing from one transparent medium to another bend at the boundary between the two mediums.
  • Fizeau Interferometer - Definition and Applications
    Article - 1 May 2014
    Interferometric measurements can be carried out in an optical arrangement in which two or more beams originated from the same source, but passing in different paths are made to interfere....
  • Phase-Contrast Microscope - Definition and Applications
    Article - 6 May 2014
    Phase-contrast microscope is a type of light microscopy that intensifies contrasts of transparent and colorless objects by influencing the optical path of light. Phase-contrast microscopy is an...
  • What is Magnification Power?
    Article - 24 Oct 2014
    Magnifying power is defined as the ratio between the dimensions of the image and the object. The process of magnification can occur in lenses, telescopes, microscopes and even in slide projectors....
  • ant Critical Angle - Definition and Applications
    Article - 6 May 2014
    Critical angle in optics refers to the angle of incidence beyond which total internal reflection of light occurs.
  • Birefringence - Definition and Applications
    Article - 1 May 2014
    Optical birefringence is an inherent property of a material that causes double refraction of a ray of light resulting in polarization of the light wave.

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