Corona, city, United States
Corona (kərō`nə), city (1990 pop. 76,095), Riverside co., S Calif.; inc. 1896. The city developed as a primary citrus fruit producer and shipping center. There is also light manufacturing. The name Corona ("circle") was derived from the 3 mi (5 km) circular drive around the city that was once used for car racing. State prisons for men and women are nearby. Cleveland National Forest and hot springs lie in the vicinity.corona, in astronomy
corona, luminous envelope surrounding the sun sun, intensely hot, self-luminous body of gases at the center of the solar system . Its gravitational attraction maintains the planets, comets, and other bodies of the solar system in their orbits...... Click the link for more information. , outside the chromosphere. Its density is less than one billionth that of the earth's atmosphere. The corona is visible only at the time of totality during a total eclipse of the sun. It then appears as a halo of light with an irregular outer edge, often with streamers radiating from the sun's surface and contrasting with the dark lunar disk that it borders. It is divided into the inner corona, a ring of pale-yellow light against which crimson prominences are outlined, and the outer corona, a pearly white halo that extends far out into space. The corona consists of ionized gas at a temperature of 1 million°C;. By means of the coronagraph coronagraph (kərō`nəgrăf'), device invented by the French astronomer B.
..... Click the link for more information. , the innermost part of the corona can be studied and photographed in full daylight. Although the visible corona extends a few solar radii above the sun, because of its high temperature it produces a continual flow of electrically charged particles called the solar wind 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.
..... Click the link for more information. that move outward through the solar system.
corona
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Total solar eclipse. The delicately structured glow of the solar corona—or solar …
(credit: Copyright AURA Inc./National Optical Astronomy Observatories/National Science Foundation)
corona
(1) See corona wire.
(2) (Corona) The code name for Windows Media Player 9, introduced in 2003. It improved the Windows Media Video codec and added the Windows Media Audio Professional codec for 5.1 surround sound at 24 bit, 96 kHz sampling. It also included Fast Stream, providing instant-on audio and video streaming for high-bandwidth connections.
corona
1. a circle of light around a luminous body, usually the moon
2. the outermost region of the sun's atmosphere, visible as a faint halo during a solar eclipse
3. Architect the flat vertical face of a cornice just above the soffit
4. a circular chandelier suspended from the roof of a church
5. Botany
a. the trumpet-shaped part of the corolla of daffodils and similar plants; the crown
b. a crown of leafy outgrowths from inside the petals of some flowers
6. Anatomy a crownlike structure, such as the top of the head
7. Zoology the head or upper surface of an animal, such as the body of an echinoid or the disc and arms of a crinoid
8. a long cigar with blunt ends
9. Physics short for corona discharge
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