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particle accelerator

(Encyclopedia)CE5 Linear accelerator (LINAC) CE5 Cyclotron: As the charged particles move faster, they spiral out to the edge of the Ds. particle accelerator, apparatus used in nuclear physics to produce bea...

Organization of Petroleum Exporting Countries

(Encyclopedia)Organization of Petroleum Exporting Countries (OPEC), multinational organization (est. 1960, formally constituted 1961) that coordinates petroleum policies and economic aid among oil-producing nations...

transducer

(Encyclopedia)transducer, device that accepts an input of energy in one form and produces an output of energy in some other form, with a known, fixed relationship between the input and output. One widely used class...

Raman effect

(Encyclopedia)Raman effect räˈmən [key], appearance of additional lines in the spectrum of monochromatic light that has been scattered by a transparent material medium. The effect was discovered by C. V. Raman i...

McLean

(Encyclopedia)McLean, city (1990 pop. 38,168), Fairfax co., N Va., a suburb of Washington, D.C. Manufacturing includes foods, satellite components, and computer and telecommunications equipment. The headquarters of...

heterotroph

(Encyclopedia)heterotroph hĕtˈərətrōfˌ [key], living organism that obtains its energy from carbohydrates and other organic material. All animals and most bacteria and fungi are heterotrophic. In contrast, aut...

Freedom of Information Act

(Encyclopedia)Freedom of Information Act (1966), law requiring that U.S. government agencies release their records to the public on request, unless the information sought falls into a category specifically exempted...

Office of Price Administration

(Encyclopedia)Office of Price Administration (OPA), U.S. federal agency in World War II, established to prevent wartime inflation. The OPA issued (Apr., 1942) a general maximum-price regulation that made prices cha...

Webb Space Telescope

(Encyclopedia)Webb Space Telescope or James Webb Space Telescope (JWST), is an infrared space telescope, the largest in space at its launc...

Reuter, Baron Paul Julius von

(Encyclopedia)Reuter, Baron Paul Julius von roiˈtər [key], 1816–99, founder of Reuters Telegram Company (now part of Thomson Reuters), b. Kassel, Germany. His original name was Israel Beer Josaphat. First a ba...