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chemical equation

(Encyclopedia)chemical equation, group of symbols representing a chemical reaction. There are a number of other symbols used in chemical equations. A symbol written above or below the reaction arrow indicates spe...

Milky Way

(Encyclopedia)CE5 Position of the sun in the Milky Way Milky Way, the galaxy of which the sun and solar system are a part, seen as a broad band of light arching across the night sky from horizon to horizon; if ...

pressure

(Encyclopedia)pressure, in mechanics, ratio of the force acting on a surface to the area of the surface; it is thus distinct from the total force acting on a surface. A force can be applied to and sustained by a si...

Qatar

(Encyclopedia)CE5 Qatar or Katar both: kŭˈtər, gŭ–, kətärˈ [key], officially State of Qatar, independent emirate (2015 est. pop. 2,482,000), c.4,400 sq mi (11,400 sq km), E Arabia, coextensive with the ...

Lake Charles

(Encyclopedia)Lake Charles, city (1990 pop. 70,580), seat of Calcasieu parish, SW La.; inc. 1867. It is located on Lake Charles at the mouth of the Calcasieu River in a rice, timber, oil, and natural gas region. Th...

Lyra

(Encyclopedia)Lyra līˈrə [key] [Lat.,=the lyre], northern constellation lying S of Draco, E of Hercules, and W of Cygnus. Although many civilizations represented it as a bird, it was also depicted as a tortoise....

Marville, Charles

(Encyclopedia)Marville, Charles, 1813–79, pioneering French photographer, b. Charles-François Bossu, name changed c.1831. An illustrator who drew mainly landscapes and urban scenes for use in popular books and m...

Muncie

(Encyclopedia)Muncie mŭnˈsē [key], city (1990 pop. 71,035), seat of Delaware co., E Ind., on the White River; inc. 1854. It is a trade, processing, and manufacturing center. The city is in a fertile agricultural...

Anderson, cities, United States

(Encyclopedia)Anderson. 1 City (2020 pop. 54,788), seat of Madison co., E central Ind., on the White River; inc. 1838. It is a manufacturing center in a fertile farm area; food products, aircraft ...

Grand Rapids

(Encyclopedia)Grand Rapids. <1> City (2020 pop. 198,917), seat of Kent co., SW central Mich., on the Grand River; inc. 1850. The second largest city in the stat...