Columbia Encyclopedia

Search results

500 results found

Theodosian Code

(Encyclopedia)Theodosian Code thēˌədōˈshən [key], Latin Codex Theodosianus, Roman legal code, issued in 438 by Theodosius II, emperor of the East. It was at once adopted by Valentinian III, emperor of the Wes...

QR code

(Encyclopedia)QR code: see barcode.

Communications Satellite Corporation

(Encyclopedia)Communications Satellite Corporation (Comsat), organization incorporated (1962) by an act of Congress to establish a commercial system of international communications using artificial satellites. Alth...

Federal Communications Commission

(Encyclopedia)Federal Communications Commission (FCC), independent executive agency of the U.S. government established in 1934 to regulate interstate and foreign communications in the public interest. The FCC is co...

Morse Code (table)

(Encyclopedia)Morse Code International Morse Code American Morse CodeThe American Morse differs in the following symbols: ...

Universal Product Code

(Encyclopedia)Universal Product Code: see barcode. ...

pulse code modulation

(Encyclopedia)pulse code modulation: see modulation. ...

Quick Response code

(Encyclopedia)Quick Response code: see barcode. ...

Kroemer, Herbert

(Encyclopedia)Kroemer, Herbert, 1928–, German physicist, Ph.D. Univ. of Göttingen, 1952. Kroemer was a researcher at RCA Laboratories in Princeton, N.J. (1954–57), and at Varian Associates in Palo Alto, Calif....

Alferov, Zhores Ivanovich

(Encyclopedia)Alferov, Zhores Ivanovich, 1930–2019, Russian physicist, b. Vitebsk (now in Belarus), Ph.D. V. I. Ulyanov Electrotechnical Institute, 1952. He joined the research staff of the A. F. Ioffe Physico-Te...