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technetium

(Encyclopedia)technetium tĕknēˈshēəm [key] [Gr. technetos=artificial], artificially produced radioactive chemical element; symbol Tc; at. no. 43; mass no. of most stable isotope 98; m.p. 2,200℃; b.p. 4,877�...

adrenal gland

(Encyclopedia)CE5 Adrenal glands: The cross-sectioned area shows the adrenal cortex and medulla. adrenal gland so͞oprərēnˈəl [key], endocrine gland (see endocrine system) about 2 in. (5.1 cm) long situated...

Galápagos Islands

(Encyclopedia)Galápagos Islands gəlăpˈəgōs [key] [Span.,=tortoises], archipelago and province, 3,029 sq mi ...

garden city, in city planning

(Encyclopedia)garden city, an ideal, self-contained community of predetermined area and population surrounded by a greenbelt. As formulated by Sir Ebenezer Howard, the garden city was intended to bring together the...

Kasparov, Garry

(Encyclopedia)Kasparov, Garry kəspärˈôf, –ŏf [key], 1963–, Armenian chess player, b. Azerbaijan (then in the USSR) as Garik Kimovich Wainshtein. He became the world junior champion at the age of 16 and was...

snow

(Encyclopedia)CE5 Snow occurs in many different forms. Among the various recognized classes of forms are (A) needles; (B) columns and groups of columns; (C) plates; (D) branched, or dendritic, plates; (E) combin...

Rutherford, Ernest Rutherford, 1st Baron

(Encyclopedia)Rutherford, Ernest Rutherford, 1st Baron, 1871–1937, British physicist, b. New Zealand. Rutherford left New Zealand in 1895, having earned three degrees from the Univ. of New Zealand but having fail...

Toulouse-Lautrec, Henri de

(Encyclopedia)Toulouse-Lautrec, Henri de äNrēˈ də to͞olo͞ozˈ lōtrĕkˈ [key], 1864–1901, French painter and lithographer, b. Albi. Son of a wealthy nobleman, Lautrec fell and broke both legs when he was a...

electronics industry

(Encyclopedia)electronics industry, the business of creating, designing, producing, and selling devices such as radios, televisions, stereos, computers, semiconductors, transistors, and integrated circuits (see ele...

sea level

(Encyclopedia)sea level, the level of the sea, which serves as the datum used for measurement of land elevations and ocean depths. Theoretically, one would expect sea level to be a fixed and permanent horizontal su...