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Welwyn Garden City

(Encyclopedia)Welwyn Garden City wĕlˈĭn [key], town (1991 pop. 40,665), Hertfordshire, E central England. It is a garden city, founded by Ebenezer Howard in 1920, as well as one of the new towns. Its industries ...

Whitehorse

(Encyclopedia)Whitehorse, city (1991 pop. 17,925), S Yukon, Canada, on the Yukon River. Since 1952 it has been the territorial capital. Whitehorse is on the Alaska Highway and was the terminus of the White Pass and...

Abbott and Costello

(Encyclopedia)Abbott and Costello kŏstĕlˈō [key], American comedy team of William Alexander “Bud” Abbott, 1895–1974, b. Asbury Park, N.J., and Lou Costello, 1906–59, b. Pate...

Braun, Karl Ferdinand

(Encyclopedia)Braun, Karl Ferdinand broun [key], 1850–1918, German physicist. Braun taught at the Univ. of Marburg, Strasbourg Univ., Karlsruhe's Technische Hochschule, and the Univ. of Tübingen before being na...

Heliopolis, ancient city, Egypt

(Encyclopedia)Heliopolis hēlēŏpˈəlĭs [key] [Gr.,=city of the sun], ancient city, N Egypt, in the Nile delta, 6 mi (10 km) below modern Cairo. It was noted as the center of sun worship, and its god Ra or Re wa...

Hertzsprung, Ejnar

(Encyclopedia)Hertzsprung, Ejnar īˈnär hĕrtsˈspro͞ong [key], 1873–1967, Danish astronomer. Although trained as a chemical engineer, Hertzsprung made his career in astronomy, specializing in exacting photogr...

mass-luminosity relation

(Encyclopedia)mass-luminosity relation, in astronomy, law stating that the luminosity of a star is proportional to some power of the mass of the star. More massive stars are in general more luminous. For stars on t...

blue shift

(Encyclopedia)blue shift or blueshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the blue, or shorter wavelength, end of the visible spectrum. The am...

Bode, Johann Elert

(Encyclopedia)Bode, Johann Elert yōˈhän āˈlĕrt bōˈdə [key], 1747–1826, German astronomer. From 1772 to 1825 he was astronomer of the Academy of Science, Berlin, and from 1786, director of the Berlin Obse...

Adams, John Couch

(Encyclopedia)Adams, John Couch, 1819–92, English astronomer, grad. St. John's College, Cambridge, 1843. By mathematical calculation based on irregularities in the motion of Uranus, he predicted the position of t...