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Results 311 - 320 of 1190 for Optical
  • Optical Telescope - How Does it Work?
    Article - 1 Dec 2007
    An optical telescope is an instrument that can make distant objects appears much closer.
  • What is a Focal Length?
    Article - 18 Nov 2007
    The focal length of an optical system is a measure of how strongly it focuses or diffuses light. A system has greater optical power if it has a shorter focal length than a system that possesses a...
  • Dioptre - The Definition of Dioptre
    Article - 17 Nov 2007
    Dioptre is a measurement unit that describes the optical power of a lens or a curved mirror. Dioptre can be expressed as the reciprocal value of its focal length in meters.
  • An Introduction to Refractometry
    Article - 25 Oct 2007
    You’ve lost the key to your locker in the swimming pool. You spot it lying on the bottom of the shallow part of the pool, reach in to take it – and your hand misses. The refraction of light at the...
  • High Precision Optical Measuring Instruments
    Article - 25 Oct 2007
    The characterisation of the purity of oils, waxes, fats and other by-products of the raffination process of mineral oils is easily done with an ABBE-refractometer. This historic instrument standard is...
  • Polarizer - Basic Definition and Types of Polarizers
    Article - 21 Oct 2007
    A polarizer is a device that converts a beam of electromagnetic waves such as light which is unpolarized or mixed-polarization into a beam with a single linear polarization state.
  • Liquid Crystals - What are Liquid Crystals and How They Are Used to Construct LCDs
    Article - 20 Oct 2007
    A liquid crystal display, commonly abbreviated as LCD, is a thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a light source or reflector. It is often...
  • Prescription Glasses - Lens Design, Materials and Optical Coatings
    Article - 25 Sep 2007
    A corrective lens is a lens worn on or before the eye - contact lenses or eyeglass lenses respectively. They are used to treat sight issues.
  • Real-Time Optical Parylene Thickness Sensor
    Article - 3 Aug 2007
    The real-time optical parylene thickness sensor greatly improves thickness control in parylene and other polymer deposition systems.
  • What Are Fiber Optics?
    Article - 25 Jul 2024
    Optical fibers enable high-speed, long-distance data transmission with applications in telecom, medical imaging, and sensing.

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