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Gates, Bill

(Encyclopedia)Gates, Bill (William Henry Gates 3d), 1955–, American business executive, b. Seattle, Wash. At the age of 19, Gates founded (1975) the Microsoft Corp....

mandates

(Encyclopedia)mandates, system of trusteeships established by Article 22 of the Covenant of the League of Nations for the administration of former Turkish territories and of former German colonies. As finally adopt...

blood groups

(Encyclopedia)blood groups, differentiation of blood by type, classified according to immunological (antigenic) properties, which are determined by specific substances on the surface of red blood cells. Blood group...

shorthand

(Encyclopedia)CE5 Shorthand systems shorthand, any brief, rapid system of writing that may be used in transcribing, or recording, the spoken word. Such systems, many having characters based on the letters of th...

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...

Engler, Adolf

(Encyclopedia)Engler, Adolf äˈdôlf ĕngˈlər [key], 1844–1930, German botanist. He emphasized the importance of geological history in the study of plant geography, and worked out an influential system of plan...

Gurugram

(Encyclopedia)Gurugram, formerly Gurgaon gûrˈgoun [key], city, Haryana state, N India, 15 mi (24 km) ...

Five Dynasties and Ten Kingdoms

(Encyclopedia)Five Dynasties and Ten Kingdoms, period of Chinese history between the fall of the T'ang dynasty (a.d. 907) and the establishment of the Sung dynasty (a.d. 960). It is named for the five successive sh...

joule

(Encyclopedia)joule jo͞ol, joul [key], abbr. J, unit of work or energy in the mks system of units, which is based on the metric system; it is the work done or energy expended by a force of 1 newton acting through ...

Lycurgus, founder of the Spartan constitution

(Encyclopedia)Lycurgus līkûrˈgəs [key], traditional name of the founder of the Spartan constitution. The earliest mention of him is in Herodotus. Nothing is known of his life—when he lived or if he was a real...