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Lewis, C. S.

(Encyclopedia)Lewis, C. S. (Clive Staples Lewis), 1898–1963, English author, b. Belfast, Ireland. A fellow and tutor of English at Magdalen College, Oxford, from 1925 to 1954, C. S. Lewis was noted equally for hi...

altitude

(Encyclopedia)altitude, vertical distance of an object above some datum plane, such as mean sea level or a reference point on the earth's surface. It is usually measured by the reduction in atmospheric pressure wit...

radar astronomy

(Encyclopedia)radar astronomy, application of radar to the determination of distances and planetary features within the solar system, such as rotation rates. A short burst of radio waves is transmitted in the direc...

Brahe, Tycho

(Encyclopedia)Brahe, Tycho tīˈkō brä [key], 1546–1601, Danish astronomer. The most prominent astronomer of the late 16th cent., he paved the way for future discoveries by improving instruments and by his prec...

Hoffmann, Roald

(Encyclopedia)Hoffmann, Roald, 1937–, American chemist, b. Złoczów, Poland (now Zolochiv, Ukraine), Ph.D. Harvard, 1962. After receiving his degree and working with Robert Woodward at Harvard (1962–65), he be...

Jeans, Sir James Hopwood

(Encyclopedia)Jeans, Sir James Hopwood, 1887–1946, English mathematician, physicist, and astronomer. He was professor of applied mathematics at Princeton (1905–9), later lectured at Cambridge (1910–12) and Ox...

Pearson, Karl

(Encyclopedia)Pearson, Karl, 1857–1936, English scientist. He studied law, taught geometry, and applied mathematics and mechanics, and in 1911 became professor of eugenics at the Univ. of London and director of t...

Harris, Chapin Aaron

(Encyclopedia)Harris, Chapin Aaron, 1806–60, American dentist, b. Pompey, N.Y. One of the founders of dentistry as a profession, he was the author of The Dental Art (1839; later called Principles and Practice of ...

degree, academic

(Encyclopedia)degree, academic, title bestowed upon a student on the fulfillment of certain requirements or given as an honor to an eminent person. The practice of awarding degrees originated in the universities of...

Drummond, Henry, 1851–97, Scottish clergyman and author

(Encyclopedia)Drummond, Henry, 1851–97, Scottish clergyman and author, educated at the Univ. of Edinburgh. He was a minister of the Free Church and from 1877 a lecturer on science in Free Church College, Glasgow....