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Rulers of the Byzantine Empire (table)

(Encyclopedia)Rulers of the Byzantine Empire ...

Rulers of the Roman Empire (table)

(Encyclopedia)Rulers of the Roman Empire(including dates of reign) Emperors in the East(until the fall of Rome; see table entitled Rulers of the Byzantine Empireat Byzantine Empire for later emperors) Empero...

Prefixes for Basic Metric Units (table)

(Encyclopedia)Prefixes for Basic Metric Units Multiples Fractions ...

Presidents of the United States (table)

(Encyclopedia)Presidents of the United States

Prime Ministers of Great Britain (table)

(Encyclopedia)Prime Ministers of Great Britain 1 The modern party system did not evolve until the end of the 18th cent. ...

Canadian Prime Ministers since Confederation (table)

(Encyclopedia)Canadian Prime Ministers since Confederation ...

Formulas for the Volumes of Some Common Solids (table)

(Encyclopedia)Formulas for the Volumes of Some Common Solids 1 Abbreviations: B = area of base; h = height; r = radius; l = length; w = width. ...

lanthanide series

(Encyclopedia)lanthanide series, a series of metallic elements, included in the rare-earth metals, in Group 3 of the periodic table. Members of the series are often called lanthanides, although lanthanum (atomic nu...

hafnium

(Encyclopedia)hafnium hăfˈnēəm [key], metallic chemical element; symbol Hf; at. no. 72; at. wt. 178.49; m.p. about 2,227℃; b.p. 4,602℃; sp. gr. 13.31 at 20℃; valence +4. Hafnium is a lustrous, ductile, si...

metal

(Encyclopedia)metal, chemical element displaying certain properties by which it is normally distinguished from a nonmetal, notably its metallic luster, the capacity to lose electrons and form a positive ion, and th...