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Castel Sant' Angelo

(Encyclopedia)Castel Sant' Angelo kästĕlˈ säntänˈjālō [key], Hadrian's Mausoleum, or Hadrian's Mole, massive round construction on the right bank of the Tiber in Rome. Originally built (a.d. 135–39) by Em...

Surrey

(Encyclopedia)Surrey, county (1991 pop. 997,000), 653 sq mi (1,691 sq km), SE England. The county seat is Guildford. Administratively, the county is divided into the districts of Elmbridge, Epsom and Ewell, Guildfo...

Raoult's law

(Encyclopedia)Raoult's law räo͞olzˈ [key] [for F. M. Raoult, a French physicist and chemist] states that the addition of solute to a liquid lessens the tendency for the liquid to become a solid or a gas, i.e., r...

International Union of Pure and Applied Chemistry

(Encyclopedia)International Union of Pure and Applied Chemistry (IUPAC), an international organization est. 1919 to advance the chemical sciences and contribute to the application of chemistry to the service of hum...

Pharos

(Encyclopedia)Pharos fârˈŏs [key], peninsula, extending into the Mediterranean Sea, N Egypt, NE Africa, forming two harbors at Alexandria. Originally an island, it was joined to the mainland by a mole, construct...

Svedberg, Theodor

(Encyclopedia)Svedberg, Theodor or The tāˈōdôr svādˈbĕryə, tā [key], 1884–1971, Swedish chemist. He was professor of physical chemistry from 1912 to 1949 at the Univ. of Uppsala. For his fundamental rese...

Werner, Alfred

(Encyclopedia)Werner, Alfred, 1866–1919, French-born Swiss chemist, Ph.D. Univ. of Zürich, 1890. Werner was a professor at the Univ. of Zürich from 1893 until his death in 1919. He was awarded the Nobel Prize i...

breakwater

(Encyclopedia)breakwater, offshore structure to protect a harbor from wave energy or deflect currents. When it also serves as a pier, it is called a quay; when covered by a roadway it is called a mole. In the Unite...

Arrhenius, Svante August

(Encyclopedia)Arrhenius, Svante August sfänˈtə, ärāˈnēəs [key], 1859–1927, Swedish chemist. He was a professor of physics in Stockholm in 1895 and became director of the Nobel Institute for Physical Chemi...

Wöhler, Friedrich

(Encyclopedia)Wöhler, Friedrich frēˈdrĭkh vöˈlər [key], 1800–1882, German chemist. He studied under the German chemist Leopold Gmelin and J. J. Berzelius, a Swedish chemist, and in 1836 was appointed profe...