Drummond light

Drummond light
Calcium Cal"ci*um (k[a^]l"s[i^]*[u^]m), n. [NL., from L. calx, calcis, lime; cf F. calcium. See {Calx}.] (Chem.) An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight 40. Symbol Ca. [1913 Webster]

Note: Calcium is widely and abundantly disseminated, as in its compounds calcium carbonate or limestone, calcium sulphate or gypsum, calcium fluoride or fluor spar, calcium phosphate or apatite. [1913 Webster]

{Calcium light}, an intense light produced by the incandescence of a stick or ball of lime in the flame of a combination of oxygen and hydrogen gases, or of oxygen and coal gas; -- called also {Drummond light} and {lime light}. [1913 Webster +PJC]


The Collaborative International Dictionary of English. 2000.

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  • Drummond light — Drum mond light [From Thomas Drummond, a British naval officer.] A very intense light, produced by turning two streams of gas, one oxygen and the other hydrogen, or coal gas, in a state of ignition, upon a ball of lime; or a stream of oxygen gas… …   The Collaborative International Dictionary of English

  • Drummond light — torch that burns calcium oxide (lime) and gives off intense white light, 1854, named for Scottish engineer Capt. Thomas Drummond, R.E., (1797 1840), who invented it c.1825 …   Etymology dictionary

  • Drummond light. — See calcium light. [1835 45; named after Capt. T. Drummond (1797 1840), British engineer] * * * …   Universalium

  • DRUMMOND LIGHT —    an intensely brilliant and pure white light produced by the play of an oxyhydrogen flame upon a ball of lime, so called from the inventor, Captain Thomas Drummond …   The Nuttall Encyclopaedia

  • Drummond light. — See calcium light. [1835 45; named after Capt. T. Drummond (1797 1840), British engineer] …   Useful english dictionary

  • drummond light — ˈdrəmənd noun Usage: usually capitalized D Etymology: after Thomas Drummond died 1840 British engineer : limelight 1a, 1b …   Useful english dictionary

  • DRUMMOND, CAPTAIN THOMAS —    civil engineer, born in Edinburgh; inventor of the Drummond Light; was employed in the trigonometrical survey of Great Britain and Ireland; became Under Secretary for Ireland, and was held in high favour by the Irish (1797 1840) …   The Nuttall Encyclopaedia

  • Light Division — The Light Division Active 1803 – 1815 1853 – 1856 1914 – 1918 1968 – 2007 Country Great Britain Branch British Army Type Light Infantry …   Wikipedia

  • Drummond and Smith College — Infobox University name =Drummond and Smith College motto = Per Concordiam Animi Robur (Latin: Strength Through Unity ) established =1997 principal = Edwina Ridgway city =Armidale state =New South Wales country =Australia capacity = Approx 225… …   Wikipedia

  • lime light — Drummond light Drum mond light [From Thomas Drummond, a British naval officer.] A very intense light, produced by turning two streams of gas, one oxygen and the other hydrogen, or coal gas, in a state of ignition, upon a ball of lime; or a stream …   The Collaborative International Dictionary of English

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