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Kakutani, Shizuo

(Encyclopedia)Kakutani, Shizuo, 1911–2004, Japanese mathematician, b. Osaka, Japan, grad. Tohoko Univ, Ph.D. Princeton, 1941. Kakutani repatriated to Japan during World War II, but returned to Princeton in 1948 a...

biodiesel

(Encyclopedia)biodiesel, fuel made from natural, renewable sources, such as new and used vegetable oils and animal fats, for use in a diesel engine. Biodiesel has physical properties very similar to petroleum-deriv...

transition elements

(Encyclopedia)transition elements or transition metals, in chemistry, group of elements characterized by the filling of an inner d electron orbital as atomic number increases. This includes the elements from titani...

Bethesda, in the Bible

(Encyclopedia)Bethesda bĕthĕzˈdə, –thĕsˈ– [key], pool in Jerusalem, perhaps the one discovered under the Crusaders' Church of St. Anne near St. Stephen's Gate in the northeast corner of the city. Accordin...

allotropy

(Encyclopedia)allotropy əlŏˈtrəpē [key] [Gr.,=other form]. A chemical element is said to exhibit allotropy when it occurs in two or more forms in the same physical state; the forms are called allotropes. Allot...

fermium

(Encyclopedia)fermium fûrˈmēəm [key] [for Enrico Fermi], artificially produced radioactive chemical element; symbol Fm; at. no. 100; mass no. of most stable isotope 257; m.p. 1,527℃; b.p. and sp. gr. unknown;...

crystal

(Encyclopedia)CE5 Types of crystal crystal, a solid body bounded by natural plane faces that are the external expression of a regular internal arrangement of constituent atoms, molecules, or ions. The formation...

duralumin

(Encyclopedia)duralumin do͝orălˈyəmĭn, dyo͝o– [key], alloy of aluminum (over 90%) with copper (about 4%), magnesium (0.5%–1%), and manganese (less than l%). Before a final heat treatment the alloy is duct...

Firestone, Harvey Samuel

(Encyclopedia)Firestone, Harvey Samuel, 1868–1938, American industrialist, manufacturer of rubber products, b. Columbiana co., Ohio. The son of a prosperous farmer, Harvey Firestone began to manufacture rubber ti...

Terminus

(Encyclopedia)Terminus tûrˈmĭnəs [key], in ancient Rome, both the boundary markers between properties and the name of the god who watched over boundaries. Property lines were of great importance, particularly t...