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Flötner, Peter

(Encyclopedia)Flötner or Flettner, Peter pāˈtər flötˈnər, flĕtˈnər [key], c.1485–1546, German medalist and artisan, possibly Swiss by birth. He was active in decorative sculpture, wood carving, and othe...

Antara

(Encyclopedia)Antara äntärˈä [key], fl. 600, Arab warrior and poet, celebrated in his own day as a hero because he rose from slave birth to be a tribal chief. His poetry is represented by one poem in the Mualla...

Pereda, José María de

(Encyclopedia)Pereda, José María de hōsāˈ märēˈä dā pārāˈᵺä [key], 1833–1906, Spanish novelist. His stories are laid chiefly in his native Santander. An aristocrat by birth, he wrote sympathetical...

Westmorland, Charles Neville, 6th earl of

(Encyclopedia)Westmorland, Charles Neville, 6th earl of nĕvˈĭl, wĕstˈmərlənd [key], 1543–1601, English nobleman. A Roman Catholic by birth and connected with the powerful Howard family by marriage, he join...

magnetic resonance imaging

(Encyclopedia)magnetic resonance imaging (MRI), noninvasive diagnostic technique that uses nuclear magnetic resonance to produce cross-sectional images of organs and other internal body structures. The patient lies...

teleportation, in physics

(Encyclopedia)teleportation, in physics, the transfer of key properties from one particle (or group of particles) to another a significant distance apart without a physical connection between the two particles (or ...

optical disk

(Encyclopedia)optical disk, any of a variety of information storage disks that are played or read using a laser. Optical disks include compact discs (CDs and CD-ROMs), laser discs (see videodisc), and digital versa...

Fred Lawrence Whipple Observatory

(Encyclopedia)Fred Lawrence Whipple Observatory, astronomical observatory located 35 mi (56 km) S of Tucson, Ariz., at an altitude of 8,500 ft (2,590 m). It is operated jointly by the Smithsonian Astrophysical Obse...

stun gun

(Encyclopedia)stun gun, hand-held electronic device that produces a high-voltage pulse that can immobilize a person for several minutes with no permanent damage in most cases. It is powered by ordinary batteries, w...

Callahan, Harry Morey

(Encyclopedia)Callahan, Harry Morey, 1912–99, American photographer, b. Detroit. Self-taught, he began taking pictures (1938) as a hobby and, inspired by the work of Ansel Adams, began to produce professional-qua...