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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 ...
Gas lighting in the historical center of Wrocław, Poland, is manually turned off and on daily.. Gas lighting is the production of artificial light from combustion of a fuel gas such as methane, propane, butane, acetylene, ethylene, hydrogen, carbon monoxide, coal gas (town gas) or natural gas.
He reported that the light could be observed 68 miles away and would cast a strong shadow at a distance of thirteen miles. [1] Drummond left Ireland for a period prior to the Reform Act 1832 . For his services to the Whigs, acting as secretary to Lord Spencer , Lord Brougham had him awarded a pension 300 pounds per annum.
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To refer to a concept similar to that of today's Middle East but earlier in time, the term ancient Near East is used. This list is intended as a timeline of the history of the Middle East. For more detailed information, see articles on the histories of individual countries. See ancient Near East for ancient history of the Middle East.
1962 Nick Holonyak Jr. develops the first practical visible-spectrum (red) light-emitting diode. 1963 Kurt Schmidt invents the first high pressure sodium-vapor lamp. [17] 1972 M. George Craford invents the first yellow light-emitting diode. 1972 Herbert Paul Maruska and Jacques Pankove create the first violet light-emitting diode.
The Siege and Destruction of Jerusalem by the Romans Under the Command of Titus, A.D. 70, by David Roberts (1850), shows the city burning. Early thermal weapons, which used heat or burning action to destroy or damage enemy personnel, fortifications or territories, were employed in warfare during the classical and medieval periods (approximately the 8th century BC until the mid-16th century AD).
Meanwhile, pan-Arabist leaders throughout the Middle East encouraged Iraqi leaders to free Syria and Palestine from British control. al-Gaylani, initially reluctant to do so, eventually succumbed to pan-Arabism and began negotiations with the Axis in 1940. In response, Britain sent a limited occupation force to Iraq, which al-Gaylani allowed.