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Artificial daylight supplementation is the use of artificially generated lighting in the living areas of animals such as poultry, to extend the egg laying season of the birds. It is used commonly in commercial farms for chickens, ducks, and other birds, and the opposite, light deprivation, is used in most breeds of geese who have opposite ...
The Tyndall effect is seen when light-scattering particulate matter is dispersed in an otherwise light-transmitting medium, where the diameter of an individual particle is in the range of roughly 40 to 900 nm, i.e. somewhat below or near the wavelengths of visible light (400–750 nm).
Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate.. He invented a version of the light-dimmer switch for use in homes around the United States and led his Lutron Electronics Company into the production of lighting controllers.
Leviton was founded in 1906 by Russian immigrants Evser Leviton and his son Isidor Leviton when they began manufacturing brass mantle tips for natural gas lights in Manhattan's Lower East Side. [ 2 ] [ 3 ] [ 4 ] In 1910, Isidor designed a screw-in lampholder for the newly invented electric light bulb and within ten years the lampholders were ...
Kerr-induced self-focusing was first predicted in the 1960s [4] [5] [6] and experimentally verified by studying the interaction of ruby lasers with glasses and liquids. [7] [8] Its origin lies in the optical Kerr effect, a non-linear process which arises in media exposed to intense electromagnetic radiation, and which produces a variation of the refractive index as described by the formula ...
The "I Have 6 Eggs" riddle has gone viral across social media, puzzling many with its deceptively easy setup. Despite its basic premise of just counting some eggs, this riddle has proven a bit ...
To underscore the strange spin on work-life balance in the new Apple TV Plus series “Severance,” cinematographer Jessica Lee Gagné worked closely with production designer Jeremy Hindle on a ...
[3] [4] In SI units illuminance is measured in lux (lx), or equivalently in lumens per square metre (lm·m −2). [2] Luminous exitance is measured in lm·m −2 only, not lux. [4] In the CGS system, the unit of illuminance is the phot, which is equal to 10 000 lux. The foot-candle is a non-metric unit of illuminance that is used in photography ...