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liquid crystal

(Encyclopedia)liquid crystal, liquid whose component particles, atoms or molecules, tend to arrange themselves with a degree of order far exceeding that found in ordinary liquids and approaching that of solid cryst...

Micheaux, Oscar Devereaux

(Encyclopedia)Micheaux, Oscar Devereaux, 1884–1951, American filmmaker and author, b. Metropolis, Ill. The son of former slaves, Micheaux first worked as a Pullman porter, then was a homesteader in South Dakota. ...

Nakamura, Shuji

(Encyclopedia)Nakamura, Shuji, 1954–, Japanese physicist and electronics engineer, grad. Univ. of Tokushima (D.Eng., 1994). Nakamura joined the Nichia Corporation in 1977, and it was there that he began his life-...

naphthol

(Encyclopedia)CE5 naphthol năfˈthôl [key], C10H7OH, either of two crystalline monohydric alcohols. The naphthols are position isomers, differing in the location of the hydroxyl group, –OH, on the carbon ske...

Kony, Joseph Rao

(Encyclopedia)Kony, Joseph Rao, 1964?–, Ugandan rebel and war criminal. His cousin, Alice Lakwena, led the Holy Spirit Movement against (1986–87) Uganda's President Museveni, and when she was defeated, Kony for...

tektite

(Encyclopedia)tektite tĕktīt [key], naturally occurring, silica-rich (65%–80% SiO2) glass resembling obsidian and sometimes shale, and is normally jet black to olive green. They appear as small rounded or elong...

thulium

(Encyclopedia)thulium tho͞oˈlēəm [key] [from Thule, an ancient name for Scandinavia], metallic chemical element; symbol Tm; at. no. 69; at. wt. 168.93421; m.p. about 1,545℃; b.p. 1,947℃; sp. gr. 9.3; valenc...

tody

(Encyclopedia)tody tōˈdē [key], common name for small (3–4 in./9–10 cm) West Indian birds of the family Todidae, comprising the single genus Todus. Bright green above with red throats, they are forest birds ...

scale, in weights and measures

(Encyclopedia)scale, in weights and measures, instruments for determining weight, generally for other than laboratory use. For the principles of operation of all weighing devices, see balance. Platform scales utili...

Schuyler, Philip John

(Encyclopedia)Schuyler, Philip John skīˈlər [key], 1733–1804, American Revolutionary general, b. Albany, N.Y. He was a member of one of the wealthiest colonial New York families. After serving in the French an...