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Rotblat, Sir Joseph

(Encyclopedia)Rotblat, Sir Joseph, 1908–2005, British physicist and anti-nuclear weapons activist, b. Warsaw, Poland; grad. Free Univ. of Poland (M.A., 1932), Univ. of Warsaw (Ph.D., 1938), Univ. of Liverpool (Ph...

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...

Rockville

(Encyclopedia)Rockville, city (1990 pop. 44,835), seat of Montgomery co., W central Md., a NW suburb of Washington, D.C.; settled c.1760s, inc. as a city 1860. It has several scientific research and technology labo...

Powell, Cecil Frank

(Encyclopedia)Powell, Cecil Frank, 1903–69, British nuclear physicist, Ph.D. Cambridge, 1927. Powell joined the faculty at the Univ. of Bristol in 1927, was named Melville Wills Professor of Physics in 1948, and ...

Oganessian, Yuri Tsolakovich

(Encyclopedia)Oganessian, Yuri Tsolakovich, 1933–, b. Rostov-na-Donu, Russian nuclear physicist, Ph.D. Moscow State Univ. (1963), Joint Institute for Nuclear Research (JINR), Dubna (1970). Joining the JINR's Fler...

barn

(Encyclopedia)barn, abbr. b, in physics, unit of nuclear cross section, i.e., the effective target presented by a nucleus for collisions leading to nuclear reactions; it is equal to 10−24 square centimeters. The ...

magnetic resonance

(Encyclopedia)magnetic resonance, in physics and chemistry, phenomenon produced by simultaneously applying a steady magnetic field and electromagnetic radiation (usually radio waves) to a sample of atoms and then a...

CERN

(Encyclopedia)CERN or European Organization for Nuclear Research, nuclear and particle physics research center straddling the French-Swiss border W of Geneva, Switzerland. Established in 1952 as the provisional Eur...

sun, in astronomy

(Encyclopedia) CE5 Structure of the sun sun, intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the sola...

Lange, David Russell

(Encyclopedia)Lange, David Russell lăng [key], 1942–2005, New Zealand politician. After receiving his law degree (LL.M., 1970) he fought for the rights of the underprivileged in Auckland, and was elected to the ...
 

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