(Encyclopedia) atomic number, often represented by the symbol Z, the number of protons in the nucleus of an atom, as well as the number of electrons in the neutral atom. Atoms with the same atomic…
(Encyclopedia) aloealoeălˈō [key] [Gr.], any species of the genus Aloe, succulent perennials of the family Lilaceae (lily family), native chiefly to the warm dry areas of S Africa and also to…
(Encyclopedia) Franklin, Rosalind Elsie, 1920–58, English molecular biologist and chemist, grad. Newnham College, Cambridge (1941). She spent most of the war years (1942–45) working for the British…
(Encyclopedia) Yonath, Ada E., 1939–, Israeli crystallographer, Ph.D. Weizmann Institute of Science, Rehovat, Israel, 1968. Yonath has been a researcher and professor at the Weizmann Institute since…
(Encyclopedia) green flash or emerald flash, a refractive phenomenon of the atmosphere where the top edge of the setting (or, less frequently, rising) sun will momentarily turn emerald green. The…
(Encyclopedia) Lothair, sometimes called Lothair II, d. 869, king of Lotharingia (855–69), second son of Emperor of the West Lothair I. He inherited the region bounded by the Rhine, Scheldt, Alps,…
(Encyclopedia) Izvolsky, Aleksandr PetrovichIzvolsky, Aleksandr Petrovichəlyĭksänˈdər pētrôˈvĭch ēzvôlˈskē [key], 1856–1919, Russian diplomat instrumental in fostering the Triple Entente with France…
(Encyclopedia) OrsiniOrsiniōrsēˈnē [key], powerful Roman family that included three popes and numerous other churchmen, soldiers and statesmen. The eponymous ancestor was one Ursus. Giacinto Orsini,…
(Encyclopedia) Martin IV, d. 1285, pope (1281–85), a Frenchman named Simon de Brie; successor of Nicholas III. He was chancellor under Louis IX of France and was created cardinal by Urban IV. He was…
(Encyclopedia) FormosusFormosusfôrmōˈsəs [key], c.816–896, pope (891–96), probably a Roman; successor of Stephen VI. Under Pope Nicholas I he had been bishop in Bulgaria, where he pursued a rigorous…
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