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entropy

(Encyclopedia)entropy ĕnˈtrəpē [key], quantity specifying the amount of disorder or randomness in a system bearing energy or information. Originally defined in thermodynamics in terms of heat and temperature, e...

symmetry

(Encyclopedia)symmetry, generally speaking, a balance or correspondence between various parts of an object; the term symmetry is used both in the arts and in the sciences. In art and design, it is often used in a s...

Hochhuth, Rolf

(Encyclopedia)Hochhuth, Rolf rôlf hōkhˈho͞ot [key], 1931–2020, German dramatist. His provocative first drama, The Deputy (1963), accuses Pope Pius XII and the Roman Catholic clergy of tolerating Nazi crimes a...

Nuclear Regulatory Commission

(Encyclopedia)Nuclear Regulatory Commission (NRC), an independent U.S. government commission, created by the Energy Reorganization Act of 1974 and charged with licensing and regulating civilian use of nuclear energ...

Kroehl, Julius Hermann

(Encyclopedia)Kroehl, Julius Hermann, 1820–67, German-American inventor and engineer, b. Memel, Prussia (now Klaipeda, Lithuania). Immigrating in 1844 to the United States, he became an iron manufacturer and civi...

Coningham, Sir Arthur

(Encyclopedia)Coningham, Sir Arthur kŭnˈĭng-əm [key], 1895–1948, British air marshal, b. Australia. During World War I, he served first in the New Zealand army and then joined (1916) the Royal Flying Corps, a...

Ghazouani, Mohamed Ould

(Encyclopedia)Ghazouani, Mohamed Ould, 1956–, Mauritanian military and political leader, president of Mauritania (2019–). He joined the military in the late 1970s, rising to become commander of the armored corp...

Jhelum, town, Pakistan

(Encyclopedia)Jhelum jāˈlo͝om [key], town (1981 pop. 92,646), NE Pakistan, on the Jhelum River. Located on the main railroad and road on Punjab piedmont plain, it is an important market for timber, and has sawmi...

Tedder, Arthur William Tedder, 1st Baron

(Encyclopedia)Tedder, Arthur William Tedder, 1st Baron, 1890–1967, British air marshal. He saw service in the infantry and the Royal Flying Corps in World War I. After 1919 he held important positions in the Roya...

Tennessee-Tombigbee Waterway

(Encyclopedia)Tennessee-Tombigbee Waterway, system of navigation channels, 234 mi (377 km) long, Ala. and Miss., connecting the Tennessee River with the Tombigbee River and, via the Mobile River, with the Gulf of M...