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Harrison, William Henry

(Encyclopedia)Harrison, William Henry, 1773–1841, 9th President of the United States (Mar. 4–Apr. 4, 1841), b. “Berkeley,” Charles City co., Va.; son of Benjamin Harrison (1726?–1791) and grandfather of B...

diminishing returns, law of

(Encyclopedia)diminishing returns, law of, in economics, law stating that if one factor of production is increased while the others remain constant, the overall returns will relatively decrease after a certain poin...

coherence

(Encyclopedia)coherence, constant phase difference in two or more Waves over time. Two waves are said to be in phase if their crests and troughs meet at the same place at the same time, and the waves are out of pha...

inertia

(Encyclopedia)inertia ĭnûrˈshə [key], in physics, the resistance of a body to any alteration in its state of motion, i.e., the resistance of a body at rest to being set in motion or of a body in motion to any c...

loran

(Encyclopedia)loran lôrˈănˌ [key], long-range, accurate radio navigational system used by a ship or aircraft to confirm or to determine its geographical position. The term loran is derived from the words long-r...

photosphere

(Encyclopedia)photosphere, luminous, apparently opaque layer of gases that forms the visible surface of the sun or any other star. The photosphere lies between the dense interior gases and the more attenuated gases...

Woffington, Peg

(Encyclopedia)Woffington, Peg (Margaret Woffington), 1714?–1760, English actress, b. Dublin. Her charm and beauty as a child attracted attention, and at the age of 10 she acted in the role of Polly Peachum in a L...

Cuyp

(Encyclopedia)Cuyp or Kuyp both: koip [key], family of Dutch painters of Dordrecht. Jacob Gerritszoon Cuyp, 1594–c.1651, pupil of Abraham Bloemaert, was a portrait and landscape painter. His stepbrother and pupil...

Akintola, Samuel Ladoke

(Encyclopedia)Akintola, Samuel Ladoke, 1910–66, Nigerian politician, b. Ogbomosho, SW Nigeria. A Yoruba, he held the title of Oloye Aare Ona Kakanfo XIII of the Yoruba. After studying law and public administratio...

Estaing, Charles Hector, comte d'

(Encyclopedia)Estaing, Charles Hector, comte d' shärl ĕktôrˈ kôNt dĕstăNˈ [key], 1729–94, French admiral. After serving in India he was given (1778) command of a French fleet sent to aid the colonists in ...