Columbia Encyclopedia

Search results

500 results found

cathode-ray tube

(Encyclopedia)CE5 Cathode-ray tube cathode-ray tube (CRT), special-purpose electron tube in which electrons are accelerated by high-voltage anodes, formed into a beam by focusing electrodes, and projected towar...

White Huns

(Encyclopedia)White Huns or Hephthalites hĕfˈthəlītsˌ [key], people of obscure origins, possibly of Tibetan or Turkish stock. They were called Ephthalites by the Greeks, and Hunas by the Indians. There is no d...

Emancipation Proclamation

(Encyclopedia)Emancipation Proclamation, in U.S. history, the executive order abolishing slavery in the Confederate States of America. The proclamation did not reflect Lincoln's desired solution for the slavery p...

penicillin

(Encyclopedia)penicillin, any of a group of chemically similar substances obtained from molds of the genus Penicillium that were the first antibiotic agents to be used successfully in the treatment of bacterial inf...

air-cushion vehicle

(Encyclopedia)CE5 Air-cushion vehicle: In vehicles modified with a trunk or skirt (A), the rate of leakage is reduced and less power is needed to maintain the cushion. Vehicles designed to travel over deep water...

jeopardy

(Encyclopedia)jeopardy, in law, condition of a person charged with a crime and thus in danger of punishment. At common law a defendant could be exposed to jeopardy for the same offense only once; exposing a person ...

Lorentz, Hendrik Antoon

(Encyclopedia)Lorentz, Hendrik Antoon hĕnˈdrək änˈtōn lōˈrĕnts [key], 1853–1928, Dutch physicist, a pioneer in formulating the relations between electricity, magnetism, and light. He was one of the first...

karma

(Encyclopedia)karma or karman kärˈmə, kärˈmən [key], [Skt.,=action, work, or ritual], basic concept common to Hinduism, Buddhism, and Jainism. The doctrine of karma states that one's state in this life is a r...

anticyclone

(Encyclopedia)anticyclone, region of high atmospheric pressure; anticyclones are commonly referred to as “highs.” The pressure gradient, or change between the core of the anticyclone and its surroundings, combi...

hexameter

(Encyclopedia)hexameter hĕksămˈətər [key] [Gr.,=measure of six], in prosody, a line to be scanned in six feet (see versification). The most celebrated hexameter measure is dactylic, which was the meter for mos...

Browse by Subject