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Camões, Luís de

(Encyclopedia)Camões or Camoens, Luís de both: lo͞oēshˈ dĭ kəmoiNshˈ [key], 1524?–1580, Portuguese poet, the greatest figure in Portuguese literature. Born of a poor family, Camões gained wide familiarit...

Caravaggio, Michelangelo Merisi da

(Encyclopedia)Caravaggio, Michelangelo Merisi da äˌmārēˈjē [key], 1571–1610, Italian painter. His surname, Caravaggio, came from his birthplace. After an apprenticeship in Milan, he arrived (1592) in Rome w...

lens, in optics

(Encyclopedia)CE5 Lenses lens, device for forming an image of an object by the refraction of light. In its simplest form it is a disk of transparent substance, commonly glass, with its two surfaces curved or wi...

color

(Encyclopedia)color, effect produced on the eye and its associated nerves by light waves of different wavelength or frequency. Light transmitted from an object to the eye stimulates the different color cones of the...

maple

(Encyclopedia)maple, common name for the genus Acer of the Aceraceae, a family of deciduous trees and shrubs of the Northern Hemisphere, found mainly in temperate regions and on tropical mountain slopes. Acer, the ...

folk medicine

(Encyclopedia)folk medicine, methods of curing by means of healing objects, herbs, or animal parts; ceremony; conjuring, magic, or witchcraft; and other means apart from the formalized practice of medical science. ...

Ferlinghetti, Lawrence

(Encyclopedia)Ferlinghetti, Lawrence fûrˈlĭng-gĕtˈē [key], 1919–2021, American author and publisher, b. Yonkers, N.Y, ...

virtual reality

(Encyclopedia)virtual reality (VR) or virtual environment (VE), computer-generated environment with and within which people can interact. The advantage of VR is that it can immerse people in an environment that wou...

Yorktown campaign

(Encyclopedia)Yorktown campaign, 1781, the closing military operations of the American Revolution. After his unsuccessful Carolina campaign General Cornwallis moved into Virginia to join British forces there. His l...

Vesta, in astronomy

(Encyclopedia)Vesta vĕsˈtə [key], in astronomy, the fourth asteroid to be discovered. It was found in 1807 by H. Olbers. It is the third largest asteroid in size, with a diameter of c.326 mi (525 km). Its averag...