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baryon
(Encyclopedia)baryon bârˈēŏnˌ [key] [Gr.,=heavy], class of elementary particles that includes the proton, the neutron, and a large number of unstable, heavier particles, known as hyperons. From a technical poi...polonium
(Encyclopedia)polonium pəlōˈnēəm [key], radioactive chemical element; symbol Po; at. no. 84; mass no. of most stable isotope 209; m.p. 254℃; b.p. 962℃; sp. gr. about 9.4; valence +2 or +4. Polonium is an e...Gorbachev, Mikhail Sergeyevich
(Encyclopedia)Gorbachev, Mikhail Sergeyevich mēkhəyēlˈ sĭrgāˈyəvich gərbəchofˈ ...force
(Encyclopedia)force, commonly, a “push” or “pull,” more properly defined in physics as a quantity that changes the motion, size, or shape of a body. Force is a vector quantity, having both magnitude and dir...Nevada
(Encyclopedia)CE5 Nevada nəvădˈə, –vä– [key], far western state of the United States. It is bordered by Utah (E), Arizona (SE), California (SW, W), and Oregon and Idaho (N). In the 20th cent. the ...Smith, Adam
(Encyclopedia)Smith, Adam, 1723–90, Scottish economist, educated at Glasgow and Oxford. He became professor of moral philosophy at the Univ. of Glasgow in 1752, and while teaching there wrote his Theory of Moral ...plating
(Encyclopedia)plating, application of a plate, or coat, of metal to a surface for decoration, reflection of light, protection against corrosion, or increased wearing quality. The practice is of ancient origin: gild...Douglas-Home, Alexander Frederick, Baron Home of the Hirsel
(Encyclopedia)Douglas-Home, Alexander Frederick, Baron Home of the Hirsel dŭgˈləs-hyo͞om [key], 1903–95, British politician. Educated at Eton and Oxford, he was elected to the House of Commons in 1931 as a Co...field, in physics
(Encyclopedia)field, in physics, region throughout which a force may be exerted; examples are the gravitational, electric, and magnetic fields that surround, respectively, masses, electric charges, and magnets. The...Athens, cities, United States
(Encyclopedia)Athens. 1 City (2020 population 25406), seat of Limestone co., N Al; inc. 1818. One of the first incorporated cities in Alabma, the city was established a year before the state was ...Browse by Subject
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