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Ostwald, Wilhelm

(Encyclopedia)Ostwald, Wilhelm vĭlˈhĕlm ôstˈvält [key], 1853–1932, German physical chemist and natural philosopher, b. Riga, Latvia. He was professor of chemistry and director of the chemical laboratory (18...

ampere

(Encyclopedia)ampere ămˈpēr [key], abbr. amp or A, basic unit of electric current. It is the fundamental electrical unit used with the mks system of units of the metric system. The ampere is officially defined a...

Kendall, Henry Way

(Encyclopedia)Kendall, Henry Way, 1926–99, American physicist. A professor at the Massachusetts Institute of Technology, Kendall won the 1990 Nobel Prize in Physics with Jerome Friedman and Richard Taylor for a s...

subtraction

(Encyclopedia)subtraction, fundamental operation of arithmetic; the inverse of addition. If a and b are real numbers (see number), then the number a−b is that number (called the difference) which when added to b ...

Frémont, John Charles

(Encyclopedia)Frémont, John Charles, 1813–90, American explorer, soldier, and political leader, b. Savannah, Ga. He taught mathematics to U.S. naval cadets, then became an assistant on a surveying expedition (18...

Milan Decree

(Encyclopedia)Milan Decree, issued Dec., 1807, by Napoleon I of France in an attempt to enforce the Continental System. Designed to strengthen the Berlin Decree, it authorized French warships and privateers to capt...

baby's breath

(Encyclopedia)baby's breath, name for a plant of the family Caryophyllaceae (pink family) and for several other flowers, e.g., white bedstraw of the family Rubiaceae (madder family) and grape hyacinth of the family...

ribbon

(Encyclopedia)ribbon, relatively narrow width of woven fabric edged with selvage. Ribbons have been used for centuries as girdles, headdresses, and badges and for ornamentation. At first called ribbands, they were ...

Pardo, Juan

(Encyclopedia)Pardo, Juan, fl. 1560s, Spanish officier and explorer. On the orders of Menéndez de Avilés, Pardo led two expeditions (1566–67, 1567–68) from the Spanish settlement of Santa Elena on Parris Isla...

architrave

(Encyclopedia)architrave ärˈkĭtrāv [key], in architecture, principal beam and lowest member of the classical entablature, the other main members of which are the frieze and the cornice. Its position is directly...