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Bangor, city, United States

(Encyclopedia)Bangor băngˈgôr, bănˈ–, băngˈgər [key], city (2020 pop. 31,753), seat of Pe...

Academy

(Encyclopedia)Academy, school founded by Plato near Athens c.387 b.c. It took its name from the garden (named for the hero Academus) in which it was located. Plato's followers met there for nine centuries until, al...

force

(Encyclopedia)force, commonly, a “push” or “pull,” more properly defined in physics as a quantity that changes the motion, size, or shape of a body. Force is a vector quantity, having both magnitude and dir...

air pollution

(Encyclopedia)air pollution, contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates) in concentrations that endanger health. The major sources of air pollution are t...

United States

(Encyclopedia)CE5 CE5 CE5 United States, officially United States of America, republic (2015 est. pop. 319,929,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third l...

compressed air

(Encyclopedia)compressed air, air whose volume has been decreased by the application of pressure. Air is compressed by various devices, including the simple hand pump and the reciprocating, rotary, centrifugal, and...

air conditioning

(Encyclopedia)CE5 Cross section of air conditioning unit. air conditioning, mechanical process for controlling the humidity, temperature, cleanliness, and circulation of air in buildings and rooms. Indoor air i...

Secret Service, United States

(Encyclopedia)Secret Service, United States, a law enforcement division (since 2003) of the Dept. of Homeland Security. It was established in 1865 in the the Dept. of the Treasury to investigate and prevent counter...

War Department, United States

(Encyclopedia)War Department, United States, federal executive department organized (1789) to administer the military establishment. It was reconstituted (1947) as the Dept. of the Army when the military administra...

Brooklyn Academy of Music

(Encyclopedia)Brooklyn Academy of Music, performing arts center located in the borough of Brooklyn, N.Y. and popularly known as BAM. Founded in 1859 and opened in 1861, it is the oldest such institution still in op...