(Encyclopedia) pole, in electricity and magnetism, point where electric or magnetic force appears to be concentrated. A single electric charge located at a point is sometimes referred to as an…
(Encyclopedia) pre-Columbian art and architecture, works of art and structures created in Central and South America before the arrival of Europeans in the Western Hemisphere. For many years the…
(Encyclopedia)
CE5
Centripetal and centrifugal forces: When a ball is swung in a circle at the end of a string, centripetal and centrifugal forces act as shown above.
centripetal force and…
(Encyclopedia) Camp Fire Boys and Girls, American organization for boys and girls from birth to age 21, originally the Camp Fire Girls, for girls 6 to 18 years old. It was founded (1910) by Luther…
(Encyclopedia) age grade and age set, differentiation of social role based on age, commonly found in small-scale societies of North America and East Africa. Age sets are a type of sodality (…
(Encyclopedia) vertical takeoff and landing aircraft (VTOL), craft capable of rising and descending vertically from and to the ground, thus requiring no runway. While a balloon or an airship has…
(Encyclopedia) ViennaViennavēĕnˈə [key], Ger. Wien, city and province (1991 pop. 1,539,848), 160 sq mi (414 sq km), capital and largest city of Austria and administrative seat of Lower Austria, NE…
(Encyclopedia) Castle, Vernon (Vernon Castle Blythe) 1887–1918, and Irene Foote, 1893–1969, husband-and-wife dance team. Vernon Castle was an English dancer, who studied civil engineering before…
