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Optics Reference Libraries

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Nature Photonics
2012-09-24 08:13:04

Nature Photonics is a peer-reviewed scientific journal established in 2007 and published monthly by the Nature Publishing Group. As with other Nature journals, this periodical has no external Editorial Board with editorial decisions made by a fully-functioning in-house team. The journal covers research related to optoelectronics, laser science, imaging, communications, and other aspects of...

Optics Communications
2012-04-30 14:35:08

Optics Communications is a peer-reviewed rapid-publication scientific journal published by Elsevier. This journal has been in publication since April of 1969, according to the Library of Congress. It reports on all fields of optical science and technology. The following subjects are covered in Optics Communications: Physical optics, Optical information and image processing, Guided wave...

Telescope
2010-09-24 17:50:57

A telescope, designed to aid the observation of remote objects, collects some form of electromagnetic radiation (such as visible light). The Netherlands developed the first known practical telescope in the 17th century. The term "telescope" was termed in order to describe Galileo's instruments in 1611. However, Galileo was not the inventor of the telescope. It was Hans Lippershey, Zacharias...

Bifocals
2010-09-23 19:15:37

Bifocals are eyeglasses, commonly prescribed for presbyopia, with two distinct optical powers. Although there are arguments against him, Benjamin Franklin is generally credited with the invention of bifocals. After a correspondence between George Whatley and John Fenno it was thought that Franklin possibly invented the bifocals fifty years earlier than previously thought. Many inventions...

Magnifying Glass
2010-09-16 15:48:43

A magnifying glass is a convex lens, usually mounted in a frame with a handle, which is used to produce a magnified image of an object. The glass works by creating a magnified virtual image of an object behind the lens. However, the distance between the lens and the object must be shorter than the focal length for the glass to work. If the distance is not correct then the image will appear...

Telescope
2004-10-19 04:45:43

Telescope -- A telescope is an instrument composed of one or more lenses or mirrors to gather and focus electromagnetic radiation. Telescopes increase the observed angular size of objects, as well as their apparent brightness. The largest telescopes are used in astronomy. A telescope was first turned on the sky by Galileo Galilei, the Italian scientist. (Telescopes used for non-astronomical...

Parabolic Mirror
2004-10-19 04:45:43

Parabolic Mirror -- A parabolic reflector or parabolic dish is a reflective device formed in the shape of a paraboloid of revolution. Parabolic reflectors can either collect or distribute energy such as light, sound, or radio waves. The parabolic reflector functions due to the geometric properties of the paraboloid shape: if the angle of incidence to the inner surface of the collector...

Word of the Day
donative
  • A gift; a largess; a gratuity; a present; a dole.
The word 'donative' comes from a Latin word meaning 'to give'.
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