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Parmenides

(Encyclopedia)Parmenides pärmĕnˈĭdēz [key], b. c.515 b.c., Greek philosopher of Elea, leading figure of the Eleatic school. Parmenides' great contribution to philosophy was the method of reasoned proof for ass...

Fontana, Lucio

(Encyclopedia)Fontana, Lucio, 1899–1968, Italian artist, b. Argentina. He lived (1905–22) in Milan, then several times moved from Italy to Argentina and back, remaining in Italy after 1947. Much of his early wo...

Hewish, Antony

(Encyclopedia)Hewish, Antony, 1924–, British astrophysicist, Ph.D. Cambridge, 1952. Hewish spent his entire career as a faculty member at Cambridge, retiring in 1989. He shared the 1974 Nobel Prize in Physics wit...

Smith, David

(Encyclopedia)Smith, David, 1906–65, American sculptor, b. Decatur, Ind. He arrived in New York City in 1926 and studied painting at the Art Students League. In the 1930s he began experimenting with sculpture and...

Perlmutter, Saul

(Encyclopedia)Perlmutter, Saul, 1959–, American astrophysicist, b., Champaign-Urbana, Ill., Ph.D. Univ. of California, Berkeley, 1986. He is a researcher at Lawrence Berkeley National Laboratory and a professor a...

Carpenter, Malcolm Scott

(Encyclopedia)Carpenter, Malcolm Scott, 1925–2013, American astronaut, b. Boulder, Colo. The second American to go into orbital flight around the earth, he made his historic and suspenseful flight on May 24, 1962...

airglow

(Encyclopedia)airglow, faint diffuse illumination of the sky originating in the upper atmosphere. Although it occurs at all times of day throughout the upper atmosphere, it is most typically visible to an observer ...

radiation

(Encyclopedia)radiation rāˌdēāˈshən [key], term applied to the emission and transmission of energy through space or through a material medium and also to the radiated energy itself. In its widest sense the te...

furnace

(Encyclopedia)furnace, enclosed space for the burning of fuel. There are many kinds of furnaces, the type depending upon the fuel and the use to which the heat produced within it is put. Most familiar are the furna...

solar wind

(Encyclopedia)solar wind, stream of ionized hydrogen—protons and electrons—with an 8% component of helium ions and trace amounts of heavier ions that radiates outward from the sun at high speeds. The continuous...