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probability

(Encyclopedia)probability, in mathematics, assignment of a number as a measure of the “chance” that a given event will occur. There are certain important restrictions on such a probability measure. In any exper...

avionics

(Encyclopedia)avionics āˌvēŏnˈĭks [key], electronic instruments used in air or space flight; also the design and production of such instruments. Early planes had few instruments, but as aviation and aircraft ...

lettre de cachet

(Encyclopedia)lettre de cachet lĕˈtrə də käshāˈ [key], formerly in French law, private, sealed document, issued as a communication from the king. Such a letter could order imprisonment or exile for an indivi...

rancheria

(Encyclopedia)rancheria ränchāˈrēä [key], type of communal settlement formerly characteristic of the Yaqui Indians of Sonora, Mexico, and of various small Native American groups of the SW United States, especi...

Pavilion Lake

(Encyclopedia)Pavilion Lake, lake, 3.6 mi (5.8 km) long, 2,625 ft (800 m) wide, and 213 ft (65 m) deep at its maximum depth, in Marble Canyon at the S end of the Marble Range near Cache Creek, S British Columbia, C...

color index

(Encyclopedia)color index, in astronomy, difference in an object's brightness as recorded between any two well-defined bands of the electromagnetic spectrum by using optical filters of different colors. If blue and...

Goyen, Jan Josephszoon van

(Encyclopedia)Goyen, Jan Josephszoon van yän yōˈzəfsōn vän gōˈyən [key], 1596–1656, Dutch landscape painter. He studied at Leiden and Haarlem. In 1631 he settled at The Hague. His typically Dutch landsca...

Hutchinson

(Encyclopedia)Hutchinson. <1> City (2020 pop. 40,006), seat of Reno co., S central Kans., on the Arkansas River; inc. 1872. It is a commercial and industrial ...

Antoine, André

(Encyclopedia)Antoine, André äNdrāˈ äNtwänˈ [key], 1858–1943, French theatrical director, manager, and critic. In opposition to the teachings of the Paris Conservatory, he formed (1887) his own company, th...

International Telecommunication Union

(Encyclopedia)International Telecommunication Union (ITU), specialized agency of the United Nations, with headquarters at Geneva. It was created in 1934 as a result of the merging of the International Telegraph Uni...