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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 ...
Artist Lucy Telles and large basket, in Yosemite National Park, 1933 A woman weaves a basket in Cameroon Woven bamboo basket for sale in K. R. Market, Bangalore, India. Basket weaving (also basketry or basket making) is the process of weaving or sewing pliable materials into three-dimensional artifacts, such as baskets, mats, mesh bags or even furniture.
Woven bamboo flower basket (hanakago) for ikebana by Living National Treasure Hayakawa Shōkosai V, at the Kyoto State Guest HouseBamboo weaving (竹編み, takeami) is a form of bambooworking (竹細工, takezaiku) and a traditional Japanese craft (工芸, kōgei), with a range of different applications, weaving styles and appearances.
One of the best-known of these standards was the English standard: candlepower. One candlepower was the light produced by a pure spermaceti candle weighing one sixth of a pound and burning at a rate of 120 grains per hour. Germany, Austria, and Scandinavia used the Hefnerkerze, a unit based on the output of a Hefner lamp. [4]
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).
Limelight (also known as Drummond light or calcium light) [1] is a non-electric type of stage lighting that was once used in theatres and music halls. An intense illumination is created when a flame fed by oxygen and hydrogen is directed at a cylinder of quicklime ( calcium oxide ), [ 2 ] due to a combination of incandescence and ...
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 ...
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.