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rubidium

(Encyclopedia)rubidium ro͞obĭdˈēəm [key], metallic chemical element; symbol Rb; at. no. 37; at. wt. 85.4678; m.p. 38.89℃; b.p. 686℃; sp. gr. 1.53 at 20℃; valence +1. Rubidium is a very soft silver-white ...

Ruscha, Ed

(Encyclopedia)Ruscha, Ed (Edward Joseph Ruscha 4th) ro͞oshāˈ [key], 1937–, American artist, b. Omaha, Neb. He is closely associated with Los Angeles, where he moved to attend (1956–60) the Chouinard Art Inst...

Teller, Edward

(Encyclopedia)Teller, Edward, 1908–2003, American physicist, b. Budapest, Hungary, Ph.D. Univ. of Leipzig, 1930, where he studied under Werner Heisenberg. Fleeing the Nazis, he came to the United States in 1935 a...

theosophy

(Encyclopedia)theosophy thēŏsˈəfē [key] [Gr.,=divine wisdom], philosophical system having affinities with mysticism and claiming insight into the nature of God and the world through direct knowledge, philosoph...

resin

(Encyclopedia)resin, any of a class of amorphous solids or semisolids. Resins are found in nature and are chiefly of vegetable origin. They are typically light yellow to dark brown in color; tasteless; odorless or ...

fetal tissue implant

(Encyclopedia)fetal tissue implant or fetal cell therapy, implantation of tissue from a fetus into a patient. In experimental procedures, fetal brain tissue has been implanted in the brains of patients with Parkins...

typewriter

(Encyclopedia)typewriter, instrument for producing by manual operation characters similar to those of printing. Corresponding to each key on the instrument's keyboard is a steel type. Activated through a series of ...

protectorate, in international law

(Encyclopedia)protectorate, in international law, a relationship in which one state surrenders part of its sovereignty to another. The subordinate state is called a protectorate. The term covers a great variety of ...

Ohio Company of Associates

(Encyclopedia)Ohio Company of Associates, organization for the purchase and settlement of lands on the Ohio River, founded at Boston in 1786. Its organizers were a group of New England men, most of them former Amer...

Ackroyd, Peter

(Encyclopedia)Ackroyd, Peter, 1949–, British author, b. London; studied Clare College, Cambridge (M.A., 1971) and Yale. A literary journalist, he wrote for the Spectator (1973–82), where he was literary and the...