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Jharkhand

(Encyclopedia)Jharkhand, state (2001 provisional pop. 26,909,428), 30,775 sq mi (79,714 sq km), E central India; created in 2000 from S Bihar, which now forms its northern border. Other bordering states are Chhatti...

Liguria

(Encyclopedia)Liguria lĭgo͝orˈēə, Ital. lēgo͞oˈryä [key], region (1991 pop. 1,676,282), 2,098 sq mi (5,434 sq km), NW Italy, extending along the Ligurian Sea and bordering France on the west. The generally...

ultrasonics

(Encyclopedia)ultrasonics, study and application of the energy of sound waves vibrating at frequencies greater than 20,000 cycles per second, i.e., beyond the range of human hearing. The application of sound energy...

oxide

(Encyclopedia)oxide, chemical compound containing oxygen and one other chemical element. Oxides are widely and abundantly distributed in nature. Water is the oxide of hydrogen. Silicon dioxide is the major componen...

electrocardiography

(Encyclopedia)electrocardiography ĭlĕkˌtrōkärdēŏgˈrəfē [key], science of recording and interpreting the electrical activity that precedes and is a measure of the action of heart muscles. Since 1887, when ...

Udmurt Republic

(Encyclopedia)Udmurt Republic o͝odˈmo͝ort, Rus. o͝odmo͞ortˈ [key] or Udmurtia, constituent republic (1990 pop. 1,620,000), 16,255 sq mi (42,100 sq km), European Russia, in the forested foothills of the Urals,...

magic, in religion and superstition

(Encyclopedia)magic, in religion and superstition, the practice of manipulating and controlling the course of nature by preternatural means. Magic is based upon the belief that the universe is populated by unseen f...

Silurian period

(Encyclopedia)Silurian period sĭlo͝orˈēən, sī– [key] [from the Silures, ancient tribe of S Wales, where the period was first studied; named by the British geologist R. I. Murchison], third period of the Pal...

crystal

(Encyclopedia)CE5 Types of crystal crystal, a solid body bounded by natural plane faces that are the external expression of a regular internal arrangement of constituent atoms, molecules, or ions. The formation...

basalt

(Encyclopedia)basalt bəsôltˈ, băsˈôlt [key], fine-grained rock of volcanic origin, dark gray, dark green, brown, reddish, or black in color. Basalt is an igneous rock, i.e., one that has congealed from a molt...

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