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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 ...
The light is produced either directly by the flame, generally by using special mixes (typically propane or butane) of illuminating gas to increase brightness, or indirectly with other components such as the gas mantle or the limelight, with the gas primarily functioning to heat the mantle or the lime to incandescence. [1]
Work in Petra's az-Zantur area has indicated that there has been an evolution from non-permanent housing (tents) to built structures, with sedentarisation happening only gradually and tents coexisting with stately mansions even in later phases of evolution. Even the well-researched, stone-built and elaborately decorated Nabataean az-Zantur ...
The Middle Passage was the stage of the Atlantic slave trade in which millions of enslaved Africans [2] were forcibly transported to the Americas as part of the triangular slave trade. Ships departed Europe for African markets with manufactured goods (first side of the triangle), which were then traded for slaves with rulers of African states ...
Limeburners loaded, fired, cooled and unloaded a lime kiln in a one-week cycle. The work was physically strenuous and somewhat dangerous as the end-product (lime or CaO) is caustic. Lime was used as a building material. [39]: 62–63 Local small-scale kilns became increasingly unprofitable, and they gradually died out through the 19th century.
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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Supporting this, the 1887 [118] Bulletin de la Société philomatique vosgienne states Turenne departed “from Belfort while his light troops took the direct route via the Bussang Pass and the Thann Valley.” [note 21] Similarly, the Société belfortaine d'émulation reads: “It is an error: one of Turenne’s lieutenants crossed the ...