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Pedersen, Charles John

(Encyclopedia)Pedersen, Charles John, 1904–89, American chemist, b. Busan, Korea, M.S. Massachusetts Institute of Technology, 1927. After finishing his studies, Pedersen began work as a research chemist for the D...

stalactite and stalagmite

(Encyclopedia)stalactite stəlăgˈmīt [key], mineral forms often found in caves; sometimes collectively called dripstone. A stalactite is an icicle-shaped mass of calcite attached to the roof of a limestone caver...

acid rain

(Encyclopedia)acid rain or acid deposition, form of precipitation (rain, snow, sleet, or hail) containing high levels of sulfuric or nitric acids (pH below 5.5–5.6). Produced when sulfur dioxide and various nitro...

Dewar, Sir James

(Encyclopedia)Dewar, Sir James dyo͞oˈər [key], 1842–1923, British chemist and physicist, b. Scotland. He was professor of chemistry (from 1877) at the Royal Institution, London, and later was director of the D...

Deisenhofer, Johann

(Encyclopedia)Deisenhofer, Johann dīˈzənhōˌfər [key], 1943–, German chemist, Ph.D. Max Planck Institute for Biochemistry, 1974. He was a researcher at the Max Planck Institute until 1987 when he joined the ...

Cram, Donald James

(Encyclopedia)Cram, Donald James, 1919–2001, American chemist, b. Chester, Vt., Ph.D. Harvard, 1947. A professor at the Univ. of California at Los Angeles, Cram expanded on the work of Charles J. Pedersen by synt...

Euler-Chelpin, Hans Karl August Simon von

(Encyclopedia)Euler-Chelpin, Hans Karl August Simon von, 1873–1964, Swedish biochemist, b. Germany, Ph.D. Univ. of Berlin, 1895. He spent his entire career at Stockholm Univ., first as professor and later as dire...

Huber, Robert

(Encyclopedia)Huber, Robert ho͞oˈbər [key], 1937–, German biochemist. After receiving his doctorate at Munich Technical Univ., he worked both there and at the Max Planck Institute for Biochemistry. With Hartmu...

Hale, Benjamin

(Encyclopedia)Hale, Benjamin, 1797–1863, American educator, b. Newburyport, Mass., grad. Bowdoin, 1818. He served as tutor at Bowdoin and in 1823 founded and became principal of Gardiner Lyceum, Gardiner, Maine, ...

Mexico, National Autonomous University of

(Encyclopedia)Mexico, National Autonomous University of, at Mexico City, Mexico; founded 1551 by the Spanish king Charles I (Holy Roman Emperor Charles V). It has faculties of accounting and business administration...