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relativity

(Encyclopedia)relativity, physical theory, introduced by Albert Einstein, that discards the concept of absolute motion and instead treats only relative motion between two systems or frames of reference. One consequ...

Wilson, Woodrow

(Encyclopedia)Wilson, Woodrow (Thomas Woodrow Wilson), 1856–1924, 28th President of the United States (1913–21), b. Staunton, Va. Wilson's writings on history and jurisprudence include Division and Reunion, 1...

Charles I, king of England, Scotland, and Ireland

(Encyclopedia)Charles I, 1600–1649, king of England, Scotland, and Ireland (1625–49), second son of James I and Anne of Denmark. There were no decisive victories in the civil war until Charles was defeated at...

Panama Canal

(Encyclopedia)Panama Canal, waterway across the Isthmus of Panama, connecting the Atlantic (by way of the Caribbean Sea) and Pacific oceans, built by the United States (1904–14, on territory leased from the repub...

United Arab Emirates

(Encyclopedia)CE5 United Arab Emirates, federation of sheikhdoms (2015 est. pop. 5,780,000), c.30,000 sq mi (77,700 sq km), SE Arabia, on the Persian Gulf and the Gulf of Oman. The federation, commonly known as ...

piracy

(Encyclopedia)piracy, robbery committed or attempted on the high seas. It is distinguished from privateering in that the pirate holds no commission from and receives the protection of no nation but usually attacks ...

Michigan

(Encyclopedia)CE5 Michigan mĭshˈĭgən [key], upper midwestern state of the United States. It consists of two peninsulas thrusting into the Great Lakes and has borders with Ohio and Indiana (S), Wisconsin (W),...

insurance

(Encyclopedia)insurance or assurance, device for indemnifying or guaranteeing an individual against loss. Reimbursement is made from a fund to which many individuals exposed to the same risk have contributed certai...

Arthropoda

(Encyclopedia)Arthropoda ärthrŏpˈədə [key] [Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct ...

Bahrain

(Encyclopedia)CE5 Bahrain or Bahrein both: bärānˈ, bə– [key], officially Kingdom of Bahrain, constitutional monarchy and ...