Columbia Encyclopedia

(Encyclopedia) Whitehead, William, 1715–85, English poet and playwright. He wrote several plays based on ancient Greek models, including Creusa, Queen of Athens (1754). Whitehead was appointed poet laureate in 175...

(Encyclopedia) Sarcelles särsĕlˈ [key], city (1990 pop. 57,121), Val-d'Oise dept., N central France. Mostly residential, it has some light industry. A church dating partly from the 12th cent. and partly from the ...

(Encyclopedia) Ravenna rĭvănˈə, rəvĕnˈə [key], city (1990 pop. 12,069), seat of Portage co., NE Ohio, in a lake and farm area; settled 1799, inc. 1852. Named after the Italian city, Ravenna has diverse light...

(Encyclopedia) Southport, city (1991 pop. 88,596), Sefton metropolitan district, NW England, in the Greater Liverpool metropolitan area. A seaside resort with light industries, it is home to the Atkinson Art Gallery...

(Encyclopedia) Ennis, city (2020 pop. 20,159), Ellis co., N Tex.; inc. 1872. It is a trading, financial, rail, and processing center in a fertile blackland area that p...

(Encyclopedia) Glencoe glĕnˈkō [key], residential village (2020 pop. 8,849), Cook co., NE Ill., on Lake M...

(Encyclopedia) Falls Church, independent city (2020 pop. 14,917), NE Va., a residential suburb of Washington, D.C.; inc. as a town 1875, as a city 1948. There is diver...

(Encyclopedia) infrared radiation, electromagnetic radiation having a wavelength in the range from c.75 × 10−6 cm to c.100,000 × 10−6 cm (0.000075–0.1 cm). Infrared rays thus occupy that part of the electrom...

(Encyclopedia) ultraviolet radiation, invisible electromagnetic radiation between visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers and in frequency from about 1015 to 1017 hert...

(Encyclopedia)  CE5 Mirror arrangements for a reflecting telescope telescope, traditionally, a system of lenses, mirrors, or both, used to gather light from a distant object and form an image of it. Traditional o...