Columbia Encyclopedia

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gun control

(Encyclopedia)gun control, government limitation of the purchase and ownership of firearms. The availability of guns is controlled by nations and localities throughout the world. In the United States the “right o...

Jay's Treaty

(Encyclopedia)Jay's Treaty, concluded in 1794 between the United States and Great Britain to settle difficulties arising mainly out of violations of the Treaty of Paris of 1783 and to regulate commerce and navigati...

Neptune, in astronomy

(Encyclopedia)Neptune, in astronomy, 8th planet from the sun at a mean distance of about 2.8 billion mi (4.5 billion km) with an orbit lying between those of Uranus and the dwarf planet Pluto; its period of revolut...

loom

(Encyclopedia)loom, frame or machine used for weaving; there is evidence that the loom has been in use since 4400 b.c. Modern looms are of two types, those with a shuttle (the part that carries the weft through the...

Roman roads

(Encyclopedia)Roman roads, ancient system of highways linking Rome with its provinces. Their primary purpose was military, but they also were of great commercial importance and brought the distant provinces in touc...

Spector, Phil

(Encyclopedia) Spector, Phil (Harvey Philip), 1939-2021, American record producer, b. Bronx, NY. The child of Russian Jewish immigrants, Spector’s father passed awa...

Sherman Antitrust Act

(Encyclopedia)Sherman Antitrust Act, 1890, first measure passed by the U.S. Congress to prohibit trusts; it was named for Senator John Sherman. Prior to its enactment, various states had passed similar laws, but th...

rugby, game

(Encyclopedia)rugby, game that originated (1823), according to tradition, on the playing fields of Rugby, England. It is related to both soccer and American football. The game is said to have started when a Rugby S...

Home Rule

(Encyclopedia)Home Rule, in Irish and English history, political slogan adopted by Irish nationalists in the 19th cent. to describe their objective of self-government for Ireland. Escalating violence between Prot...

topology

(Encyclopedia)CE5 Möbius strip: On the ordinary flat loop (A), an ant walking along the middle of the strip will pass only around the outside of the strip. If the strip is cut along the dotted line, twisted onc...