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test-ban treaty, nuclear

(Encyclopedia)test-ban treaty, nuclear: see disarmament, nuclear. ...

Rothermel, Peter Frederick

(Encyclopedia)Rothermel, Peter Frederick rŏᵺˈərmĕl [key], 1817–95, American painter, b. Nescopeck, Pa., studied in Paris. His noted historical works include a colossal Battle of Gettysburg (Capitol building...

Heng Swee Keat

(Encyclopedia)Heng Swee Keat, 1961–, Singaporean political leader. A member of the People's Action party (PAP), he was secretary (1997–2000) to Prime Minister Lee Kuan Yew, and head of Singapore's central bank ...

Barré, Isaac

(Encyclopedia)Barré, Isaac bârˈē [key], 1726–1802, British soldier and politician. He served under Gen. James Wolfe in the French and Indian Wars and was wounded at Quebec (1759). Entering Parliament in 1761,...

Singapore

(Encyclopedia)CE5 Singapore sĭngˈgəpôr, sĭngˈə–, sĭngˌgəpôrˈ [key], officially Republic of Singapore, republic (2015 est. pop. 5,535,000), 299 sq mi (774 sq km). It consists of the island of Singap...

Marsh, James

(Encyclopedia)Marsh, James, 1789–1846, English chemist. He is known for his chemical test for arsenic and antimony, called the Marsh test. Using it, very small quantities of arsenic can be detected. ...

Jenkins, John, American pioneer, 1728–85

(Encyclopedia)Jenkins, John, 1728–85, American pioneer, b. probably Connecticut. In 1753, Jenkins explored the Wyoming Valley for the proposed Susquehanna Company. A settlement (1762) under his leadership was des...

Shibboleth

(Encyclopedia)Shibboleth shĭbˈōlĕth [key], in the Bible, test word that the Gileadites made the Ephraimites pronounce. As Ephraimites could not say sh but only s as in “Sibboleth,” this was regarded as a te...

Benedict's solution

(Encyclopedia)Benedict's solution, deep-blue alkaline solution used to test for the presence of the aldehyde functional group, −CHO. The substance to be tested is heated with Benedict's solution; formation of a b...

Fehling's solution

(Encyclopedia)Fehling's solution fāˈlĭngz [key], deep-blue, alkaline solution used to test for the presence of aldehydes (e.g., formaldehyde, HCHO) or other compounds that contain the aldehyde functional group, ...