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machine

(Encyclopedia)machine, arrangement of moving and stationary mechanical parts used to perform some useful work or to provide transportation. From a historical perspective, many of the first machines were the result ...

strike

(Encyclopedia)strike, concentrated work stoppage by a group of employees, the chief weapon of organized labor. A suspension of work on the employer's part is called a lockout. Strikes usually result from conflicts ...

Brittany

(Encyclopedia)Brittany brĭtˈənē [key], Breton Breiz, Fr. Bretagne, region and former province, NW France. It is a peninsula between the English Channel (N) and the Bay of Biscay (S) and comprises four departmen...

lead, chemical element

(Encyclopedia)lead, metallic chemical element; symbol Pb [Lat. plumbum]; at. no. 82; at. wt. 207.2; m.p. 327.502℃; b.p. about 1,740℃; sp. gr. 11.35 at 20℃; valence +2 or +4. One of the oldest metals used by h...

plastic

(Encyclopedia)plastic, any organic material with the ability to flow into a desired shape when heat and pressure are applied to it and to retain the shape when they are withdrawn. The first important plastic, cel...

Buenos Aires

(Encyclopedia)Buenos Aires bwāˈnəs īˈrēz, ârˈēz, Span. bwāˈnōs īˈrās ...

locomotive

(Encyclopedia)locomotive, vehicle used to pull a train of unpowered railroad cars. Richard Trevithick, a British engineer and inventor, built and operated (1803–4) the first successful steam engine locomotive f...

Ohio, state, United States

(Encyclopedia)CE5 Ohio, midwestern state in the Great Lakes region of the United States. It is bordered by Pennsylvania (NE), West Virginia (SE) and Kentucky (S) across the Ohio River, Indiana (W), and Michigan ...

cotton

(Encyclopedia)cotton, most important of the vegetable fibers, and the plant from which the fiber is harvested. Today the leading cotton states are Texas, Georgia, Mississippi, Arkansas, North Carolina, and Louisi...

Metropolitan Opera Company

(Encyclopedia)Metropolitan Opera Company, term used in referring collectively to the organizations that have produced opera at the Metropolitan Opera House, New York City. The original house, at West 39th Street an...