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Periodic Table of the Elements: Zirconium
(Encyclopedia)Periodic Table of the Elements: Zirconium ...Round Table
(Encyclopedia)Round Table, in Arthurian legend, the table at which King Arthur and his knights held court. It was allegedly fashioned at the behest of Arthur to prevent quarrels among the knights over precedence. A...osmium
(Encyclopedia)osmium ŏzˈmēəm [key], metallic chemical element; symbol Os; at. no. 76; at. wt. 190.23; m.p. 3,045±30℃; b.p. 5,027±100℃; sp. gr. 22.57 at 20℃; valence usually +0 to +8. Osmium is a very ha...Periodic Table of the Elements: Thallium
(Encyclopedia)Periodic Table of the Elements: Thallium ...nominalism
(Encyclopedia)nominalism, in philosophy, a theory of the relation between universals and particulars. Nominalism gained its name in the Middle Ages, when it was contrasted with realism. The problem arises because i...Changes in English Pronunciation (table)
(Encyclopedia)Changes in English Pronunciation ...Devonian period
(Encyclopedia)Devonian period dĭvōˈnēən [key], fourth period of the Paleozoic era of geologic time between 408 and 360 million years ago (see Geologic Timescale, tablegeologic timescale, table). It was named (...National Parks and Monuments (table)
(Encyclopedia) National Parks and Monuments 1 National Parks and Monuments National Monuments National and International Historic Sites and Historical Parks National Memorials National Battlef...Prefixes for Basic Metric Units (table)
(Encyclopedia) Prefixes for Basic Metric Units Multiples Fractions ...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...Browse by Subject
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