Drummond light

American  

noun

1. calcium light.

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Etymology

Origin of Drummond light

1835–45; named after Capt. T. Drummond (1797–1840), British engineer

Example Sentences

In Oliver Twist he denounces the parish system in its care of orphans, and throws a Drummond light upon the haunts of crime in London.

From English Literature, Considered as an Interpreter of English History Designed as a Manual of Instruction by Coppee, Henry

The spectrum of the Drummond light is known to exhibit the two bright lines of sodium, which, however, gradually disappear as the modicum of sodium, contained as an impurity in the incandescent lime, is exhausted.

From Six Lectures on Light Delivered In The United States In 1872-1873 by Tyndall, John

Vesta, Sirius, and many others burned with a brightness that recalled my first view of the Drummond light, and seemed to dazzle my eyes when I fixed my gaze upon them.

From Overland through Asia; Pictures of Siberian, Chinese, and Tartar Life by Knox, Thomas Wallace

The dazzling light emitted from lime intensely heated, known as the Drummond light, gives the colors of the prism almost as bright as the solar spectrum.

From American Hand Book of the Daguerreotype by Humphrey, S. D. (Samuel Dwight)

This becomes heated to whiteness, and emits an intense light know as the Drummond light, used already for special purposes of illumination.

From Scientific American Supplement, No. 623, December 10, 1887 by Various