An inner appendage to a petal or a corolla, often forming a special cup, as in the daffodil and jonquil.
Any crownlike appendage at the top of an organ.
A circle, usually colored, seen in peculiar states of the atmosphere around and close to a luminous body, as the sun or moon.
A crown or circlet suspended from the roof or vaulting of churches, to hold tapers lighted on solemn occasions. It is sometimes formed of double or triple circlets, arranged pyramidically. Called also corona lucis.
The Sun's outer atmosphere. Because it is surprisingly hot, typically reaching 2 million degrees, the atmosphere emits energy in extreme ultraviolet light and X-rays. These are blocked by the Earth's atmosphere and can be seen only in space. More about the Sun and its energy
Couronne Krone, f Corona An extra organ between the corolla and the stamens as in the cup of a narcissus.
The Sun's million-degree tenuous outer atmosphere, overlying the visible disk (or 'photosphere'). Back to the top.
A series of coloured rings round the sun caused by diffraction of the light by water-drops, chiefly of alto-clouds. The innermost ring is usually a brownish red and this is often the only one visible. Within it there is a clear space, which, with this inner ring, forms the 'aureole'. When the corona is fully developed there is a violet ring outside the brownish red ring, followed by blue, green, yellow and red rings outwards. Additional series of coloured rings in the same order, are occasionally seen on the outside of the first set, forming a double or triple corona. (See Halo).
A highly structured but low density region of plasma surrounding the sun. Its structure is mainly determined by the sun's magnetic field. It is the third region surrounding the sun--it surrounds the chromosphere and the photosphere.
(1) A circular chandelier that hangs from the ceiling of a church. (2) The top projection of a cornice, which is used to deflect rain away from the building. (3) Anything crown shaped.
The outer layer of the sun, where the gases are very hot.
A circular to elongate feature which is surrounded by multiple concentric ridges. Coronae are thought to be formed by hot spots.
in the stapelieae, a crown-like portion of the staminal column, usually with the inner and outer lobes.
The luminous, irregular envelope of highly ionized gas outside the chromosphere of the Sun.
sun's outer part, visible as a halo during a total solar eclipse around the edge of the moon.
The outermost portion of the Sun's atmosphere.
The layer of the Sun above the chromosphere which is hotter than the Sun's surface and where many solar events can be seen
Crown. An appendagte of the corolla ; a crown-like margin at the top of an organ.
The top layer of the sun's atmosphere; it extends for millions of miles beyond the Sun's surface. The corona has very high temperatures (over a million K) and a very low density.
the Sun's wispy, superheated outer atmosphere
The hot, tenuous, outermost region of the sun and other stars. The sun’s corona is visible during a total solar eclipse.
The outermost layer of the solar atmosphere, characterized by low densities and high temperatures, often several million degrees Kelvin. ( go to first use in the text)
the crown part of flowers such as the daffodil.
Latin = crown. adjective - coronary or coronal; hence a coronal plane is parallel to the main arch of a crown which passes from ear to ear (cf. coronal suture).
A crown; any outgrowth between the stamens and corolla which may be petaline or staminal in origin.
A crown or cup-like growth on a flower.
Usually showy outgrowths of the perianth parts, stamens, or receptacle.
outermost portion of the Sun's atmosphere best observed during a total eclipse of the Sun.
Literally a crown. The crown like structures present in some flowers between the petals and stamens.
the top layer of the Sun's atmosphere. It is up to a few million degrees in temperature, but has very low density so the amount of heat is small. It is the pearly-white ``crown'' or glow seen around the dark Moon during a total solar eclipse.
Outermost atmosphere of the Sun, consisting of hot, low-density gas that extends for millions of miles from the Sun's surface. Ordinarily the Corona can be seen only during a total solar eclipse when it is visible as a white halo. Its shape varies from almost spherical at sunspot maximum to asymmetrical at minimum. It is very high in temperature.
The outermost part of the solar atmosphere. The corona has a very high temperature (several million degrees), but an extremely low density, and its glow, although easily visible during a solar eclipse, is far too faint to see when the disc of the Sun is even partially visible.
a crown; the whorl of structures between the corolla and stamens (Asclepiadaceae Passifloraceae)
The uppermost level of a star's atmosphere. In the Sun, the corona is characterized by low densities and high temperatures (1,000,000 ). The Sun's corona extends out to many millions of kilometers from the Sun's surface.
the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
(botany) the trumpet shaped or cup shaped outgrowth of the corolla of a daffodil or narcissus flower
an electrical discharge accompanied by ionization of surrounding atmosphere
(anatomy) any structure that resembles a crown in shape
a bright disk of light that appears around the Moon or the Sun
a more and less regular and round shaped aureole around the sun or moon
a usually colored circle often seen around and close to a luminous body (as the sun or moon) caused by diffraction produced by suspended droplets or occasional particles of dust the tenuous outermost part of the atmosphere of the sun appearing as a gray halo around the moon's black disk during a total eclipse of the sun.
Corona building command for creating halo effects with a transparent image, a bit like sprite
The topmost layer of the solar atmosphere, it is characterized by extremely high temperatures (1 to 2 million Kelvin ) and extremely low densities (10 particles per cubic centimeter).
The outermost layer of the solar atmosphere, characterized by low densities (1.0E+09/cm^3) and extraordinarily high temperatures (1.0E+06 degrees K) that extends to several solar radii. The heating of the corona is still a mystery. The shape of the corona is different at solar maximum and at solar minimum.
L. from Gr. koróné, a crown. Corona radiata, fibers radiating out like a crown from the internal capsule to various parts of the cerebral hemispheres. The corona radiata was described and named by Reil (1759-1813).
appendage standing between the corolla and stamens or on the corolla, typical of the Passiflora genius.
A set of one or more colored rings immediately surrounding the Sun or Moon when veiled by a thin cloud, due to the diffraction (breaking up) of light by cloud droplets.
the faint, white light seen around the Sun during a solar eclipse.
The outermost layer of the sun and many other stars; a faint halo of extremely hot (million-degree) gas
a disk of light surrounding the sun or moon; this is a result of the diffraction of light by small water droplets.
A series of colored rings concentrically surrounding the disk of the sun or moon. Smaller than the halo, the corona is caused by the diffraction of light around small water droplets of uniform size.
the outer layer of the Sun's atmosphere visible form Earth when the moon blocks the photosphere and chromosphere during a solar eclipse
An extra-floral set of appendages that protrude from between the corolla and the stamens or from the corolla. The crown-like corona of Daffodils is an example.
The tenuous outmost part of the solar atmosphere.
tubular outgrowth usually from the petals (daffodil)
The very hot outer layer of the Sun's atmosphere, composed of highly diffused, ionized gases with a temperature of 1,000,000 F° and above, and extending into interplanetary space. There is still considerable debate about how solar wind plasma escapes to make its way into space. We know that the Sun's corona contains "holes," regions of lower temperature and density and weak magnetic fields. These holes probably allow the high speed solar wind to spray out like water through a hose. Coronal holes show up in X-ray photographs as dark areas.
The uppermost level of a star's atmosphere. In the Sun, the corona is characterized by low densities and high temperatures greater than one million degrees Celsius (two million degrees Fahrenheit).
the outer edge of a radiated compound flower.
a crown-like structure on the corolla of some flowers, as in milkweeds.
The very hot, extended outer atmosphere of the sun and other cool main-sequence stars. The high temperature in the corona (l-2x 106 K) is probably caused by the dissipation of mechanical energy from the convective zone just below the photosphere.
A pastel halo around the moon or sun created by the diffraction of water droplets. The droplets in the cloud, such as cirrostratus, and the cloud layer itself must be almost perfectly uniform in order for this phenomena to occur. The color display sometimes appears to be iridescent.
The outer atmosphere of the Sun, extending about a million miles above the surface
The Sun's outer layer. The corona's changing appearance reflects changing solar activity.
The 'atmosphere' of the Sun that can be viewed during a solar eclipse.
The outer layer, and hottest part, of the Sun's atmosphere
The outer atmosphere of the Sun with low density and high temperature. Visible as an extended bright region about the Sun during solar eclipses.
The outer atmosphere of the sun. Low in density, high in temperature. Appears as a bright region extending in all directions.
the outer atmosphere of the sun or a star
Periphereal atmosphere of Sun ,can be seen during total eclipses
outer atmosphere of the Sun-- very hot.
The outer part of the Sun's atmosphere. The corona is visible from Earth during a total solar eclipse. It is the bright glow seen in most solar eclipse photos.
the set of colored rings around the sun (or moon) created when it shines through a thin cloud
1. layer of atmosphere surrounding the sun 2. ring of colored light around a heavenly body
a ring of tissue arising from the corolla, perianth or filaments of a flower and standing between the perianth lobes and the stamens.
The outermost layer of the solar atmosphere. The corona consists of a highly rarefied gas with a temperature greater than one million degrees. It is visible to the naked eye during a solar eclipse.
the uppermost level of the solar atmosphere, characterized by low densities and high temperatures. crater bowl-shaped depression formed by the impact of a meteoroid; depression around the opening of a volcano.
a region of very hot gas that surrounds the photosphere of a star.
The top layer of the sun's atmosphere. During a complete solar eclipse, the corona is visible.
The outermost layer of the sun’s atmosphere, which extends more than two million kilometers above the sun’s visible surface. The appearance and shape of the corona varies with the sun’s activity cycle. The corona is most prominent when the number of sunspots reaches a maximum in the solar cycle. (TOP OF THE PAGE) (CLOSE WINDOW)
The outer part of the Sun's "atmosphere". In the outer region of the corona, particles travel away from the Sun and stretch far out into space. The corona can only be seen during total solar eclipses, appearing as a halo around the moon.
The tenuous envelope of the Sun, beginning about 14,000 km (8000 naut. mi. ) above the solar surface and extending many millions of kilometers into space. The corona is visible only when the solar disc is occulted.
The faint outer atmosphere of the Sun that is exposed during a total solar eclipse.
from the Latin for crown. The sun's very hot, upper atmosphere; it appears as a ghostly white halo during a solar eclipse.
The Sun’s outer atmosphere, with a temperature of greater than a million degrees, that gives rise to the solar wind.
Literally meaning "crown," it is the outer layer of the Sun made of very thin plasma heated to 1,000,000 Kelvin. The corona is only visible during a total solar eclipse.
The very hot outer layer of the Sun's atmosphere, composed of highly diffused, superheated, ionized gases, and extending into interplanetary space. The hot gasses in the solar corona form the solar wind. See also: The Dynamic Sun.
the outermost layer of the Sun's atmosphere, visible to the eye during a total solar eclipse; it can also be observed through special filters and best of all, by X-ray cameras aboart satellites. The corona is very hot, up to 1-1.5 million degrees centigrade, and is the source of the solar wind.
The upper atmosphere of the Sun that appears as a halo around the Sun during a total eclipse.
Very hot, tenuous, outer layer of the solar atmosphere, fully ionized, affected by the solar magnetic field, region from which solar wind is emitted back to the top
The outermost region of the Sun's atmosphere, consisting of thin, ionized gases at a temperature of about 1,000,000 .
The outer layer of the Sun visible during a total solar eclipse. Compared with the photosphere, the corona has a high temperature (1,000,000 degrees) and low density (a million, million times lower).
1) The upper level of the solar atmosphere, characterized by low densities and high temperatures ( 1.0E+06 K); it is not visible from the Earth except during a total eclipse of the sun or by use of special telescopes called coronagraphs. 2) An ovoid-shaped feature.
The very hot outermost layer of a star's atmosphere. Our Sun's corona can only be seen during a total solar eclipse.
From the Latin for Crown. The widest part of the glans, often slightly flared out (particularly in the circumcised man).
Crown, or top of a head - usually found on the inner side of the corolla.
The outermost atmosphere of a star (including the Sun), millions of kilometers in extent, and consisting of highly rarefied gas heated to temperatures of millions of degrees.
The 'crown,' a ridge of flesh demarcating where the head of the penis and the shaft join.
Faint extensions of the Suns outer atmosphere seen during total eclipses.
In astronomy, a corona is the luminous plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometres into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
In meteorology, a corona is produced by the diffraction of light from either the Sun or the Moon by individual small water droplets (and sometimes tiny ice crystals) of a cloud. The corona consists of small number of concentric colored rings around the celestial object and a central bright aureole. The angular size of the corona depends on the diameters of the cloud droplets - small droplets produce bright coronae.