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atom
(Encyclopedia) CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)], basic unit of matte...Moscow, city, Russia
(Encyclopedia)Moscow mŏsˈkou, –kō [key], Rus. Moskva, city (1991 est. pop. 8,802,000), capital of Russia and of Moscow region and the administrative center of the Central federal district, W central European R...atomic weight
(Encyclopedia)atomic weight, mean (weighted average) of the masses of all the naturally occurring isotopes of a chemical element, as contrasted with atomic mass, which is the mass of any individual isotope. Althoug...New York Philharmonic
(Encyclopedia)New York Philharmonic, dating from 1842, the oldest symphony orchestra in the United States. The orchestra as it now exists is the result of the merger of the Philharmonic Society of New York with the...Putin, Vladimir Vladimirovich
(Encyclopedia)Putin, Vladimir Vladimirovich vlŭdēmˈyĭr vlŭdēmˌyĭrˈəvyĭch po͞oˈtyĭn [key], 1952–, Russian government official and political leader, b. Leningrad (now St. Petersburg). After graduating...Trotsky, Leon
(Encyclopedia)Trotsky, Leon trŏtˈskē, Rus. lāˈən trôtˈskē [key], 1879–1940, Russian Communist revolutionary, one of the principal leaders in the establishment of the USSR; his original name was Lev David...chemistry
(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...science
(Encyclopedia)science [Lat. scientia=knowledge]. For many the term science refers to the organized body of knowledge concerning the physical world, both animate and inanimate, but a proper definition would also hav...Russia
(Encyclopedia) CE5 CE5 Russia, officially the Russian Federation, Rus. Rossiya, republic (2015 est. pop. 143,888,000), 6,591,100 sq mi (17,070,949 sq km). The largest country in the world by area, Russia is bou...Browse by Subject
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