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Germiston

(Encyclopedia)Germiston jûrˈmĭstən [key], city, now part and seat of Ekurhuleni metropolitan municipality, Gauteng prov., NE South Africa, on the Witwatersrand. The chief industries are gold mining and processi...

Dewar flask

(Encyclopedia)Dewar flask [for Sir James Dewar], container after which the common thermos bottle is patterned. It consists of two flasks, one placed inside the other, with a vacuum between. The vacuum prevents the ...

amalgam

(Encyclopedia)amalgam əmălˈgəm [key], alloy containing mercury. The alloy may be liquid or solid, depending on the proportion of mercury, although all naturally occurring amalgams, i.e., those of gold and silve...

flamethrower

(Encyclopedia)flamethrower, mechanism for shooting a burning stream of liquid or semiliquid fuel at enemy troops or positions. Primitive types of flamethrowers, consisting of hollow tubes filled with burning coals,...

ammonium sulfate

(Encyclopedia)ammonium sulfate, chemical compound, (NH4)2SO4, a colorless-to-gray, rhombohedral crystalline substance that occurs in nature as the mineral mascagnite. It is soluble in water and insoluble in alcohol...

cake

(Encyclopedia)cake, originally a small mass of dough baked by turning on a spit; in present usage a dessert made of flour, sugar, eggs, seasonings, usually some leavening and liquid besides the eggs, and shortening...

English units of measurement

(Encyclopedia)English units of measurement, principal system of weights and measures used in a few nations, the only major industrial one being the United States. It actually consists of two related systems—the U...

Arlington, county, United States

(Encyclopedia)Arlington, county (2020 pop. 238,643), N Va., across the Potomac River from Washington, D.C. Arlington is a residential and commercial suburb of Washington. Within its boundaries are Arlin...

Walton, Sam

(Encyclopedia)Walton, Sam (Samuel Moore Walton), 1918–92, American retailing executive, b. Kingfisher, Okla. After 17 years of operating franchise retail stores, he opened the first Wal-Mart Discount City in Roge...

Goddard, Robert Hutchings

(Encyclopedia)Goddard, Robert Hutchings, 1882–1945, American physicist and rocket expert, b. Worcester, Mass., grad. Worcester Polytechnic Institute (B.S., 1908), Ph.D. Clark Univ., 1911. From 1914 he was associa...