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Tsien, Roger Yonchien

(Encyclopedia)Tsien, Roger Yonchien, 1952–2016, American biochemist, b. New York City, Ph.D. Cambridge, 1977. Tsien was a researcher at Cambridge (1977–81) and a professor at the Univ. of California, Berkeley (...

Orbiting Geophysical Observatory

(Encyclopedia)Orbiting Geophysical Observatory (OGO), series of six orbiting observatories (see observatory, orbiting) launched between 1964 and 1969 by the National Aeronautics and Space Administration (NASA) to s...

Herzberg, Gerhard

(Encyclopedia)Herzberg, Gerhard gĕrˈhärt hûrtsˈbûrg [key], 1904–99, Canadian physicist, b. Hamburg, Germany. He studied at Darmstadt, Göttingen, and Bristol, England, receiving a doctorate in engineering p...

Grignard reagent

(Encyclopedia)Grignard reagent grēnyärdˈ rēāˈjənt [key], any of an important class of extremely reactive chemical compounds used in the synthesis of hydrocarbons, alcohols, carboxylic acids, and other compou...

Wittfogel, Karl August

(Encyclopedia)Wittfogel, Karl August kärl aüˈgo͝ost vĭtˈfōgül [key], 1896–1988, German historian and sinologist, Ph.D. Univ. of Frankfurt, 1928. In the 1920s and early 30s, he was an active member of the ...

Aichi

(Encyclopedia)Aichi īˈchē [key], prefecture, 1,962 sq mi (5,082 sq km), central Honshu, Japan. Bounded on the S and W by Ise Bay, Aichi consists of a coastal plain (the Nobi Plain) a...

Bourke-White, Margaret

(Encyclopedia)Bourke-White, Margaret bûrkˈ hwīt [key], 1904–71, American photo-journalist, b. New York City. One of the original staff photographers at Fortune, Life, and Time magazines, Bourke-White was noted...

Marsh test

(Encyclopedia)Marsh test, method for the detection of arsenic, so sensitive that it can be used to detect minute amounts of arsenic in foods (the residue of fruit spray) or in stomach contents. The sample is placed...

Charles, Jacques Alexandre César

(Encyclopedia)Charles, Jacques Alexandre César zhäk älĕksäNˈdrə sāzärˈ shärl [key], 1746–1823, French physicist. He confirmed Benjamin Franklin's electrical experiments, became interested in aeronautic...

Yost, Ed

(Encyclopedia)Yost, Ed (Paul Edward Yost), 1919–2007, American balloonist, b. Bristow, Iowa, grad. Boeing School of Aeronautics, 1940. The father of modern hot-air ballooning, Yost pioneered the used of propane (...