Spicule
Related Category: Astronomy: General
see chromosphere.
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Chromosphere - (kr´msfr´´) [Gr.
Definition: spicules: Grass-like patterns of gas seen in the solar atmosphere.
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Spicules
Spicules are small, jet-like eruptions seen throughout the chromospheric network. They appear as short dark streaks in the H-alpha image to the left (National Solar Observatory/Sacramento Peak).
Spicules. Short-lived (lifetime from rising to falling is about 15 minutes) jets vertical to the solar surface that are several thousand kilometers long and about 1 kilometer thick.
SPICULES - Spikes of gas that rise through the chromosphere (right). Spicules are rising jets of gas that move upward at ~30 km/sec and last only ~10 minutes.
Spicules- grass-like patterns of gas seen in the solar atmosphere
Static limit- a limit close to a black hole inside of which is impossible to remain at rest ...
Spicules
the range of colors produced when visible light passes through a prism.
spicule: Small, flamelike projection in the chromosphere of the sun.
spiral arms: Long spiral patterns of bright stars, star clusters, gas, and dust that extend from the center to the edge of the disk of spiral galaxies.
Spicule
A short-lived (about 5 minutes), narrow jet of gas spouting out of the solar chromosphere. Spicules tend to cluster at the edges of supergranulation cells.
Spin ...
Spicule - A hot jet of gas moving outward through the Sun's chromosphere
Spiral Arm - A long narrow feature of a spiral galaxy in which interstellar gas, young stars, and other young objects are found ...
SPICULE
A needle-like feature of the solar chromosphere projecting upwards into the corona.
Spicules, giant plasma fountains shooting up from the Sun, as seen by the SDO on 25 April 2010; they sway like underwater seaweed thanks to ripples in the solar magnetic field. Image: NASA/SDO/AIA.
Spicules
Jets up to 16,000 kilometers in diameter, in the Sun's atmosphere.
Stratosphere ...
SPICULES
Spicules are very bright spikes that extend from the into the .
spicules
Rapidly changing, predominantly vertical, spike-like structures in the solar chromosphere observed above the limb.
spicules (NASA Thesaurus / NASA SP-7, 1965) Bright spikes extending into the chromosphere of the sun from below.
They are several hundred miles in diameter and extend outward 5000 to 10,000 miles.
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394. Spicules
Small, flame like projections in the chromosphere of the sun.
See faculae, flare, flocculi, granules, prominence, spicules, sunspot. solar air mass The optical air mass penetrated by light from the sun for any given position of the sun in the sky. solar antapex See solar apex.
Every few minutes, small solar storms erupt, expelling jets of hot matter known as spicules into the Sun's upper atmosphere (Figure 16.11).
Less prominent but also visible are the spicules - which extend from the photosphere up through the chromosphere.
The chromosphere is also home to spikes of gas called spicules that rise through it at the edges of the large convection cells that exist within the layer (so called supergranules).
What is a spicule?
How big is the chromosphere?
What is a solar flare?
What is a prominence?
What does a spicule do in a chromosphere?
What kind of layers does the chromosphere have?
How does the flash spectrum relate to the chromosphere?
The most common solar feature within the chromosphere are Spicules, long thin fingers of luminous gas which appear like the blades of a huge field of fiery grass growing upwards from the photosphere below.
In a main sequence star such as the Sun, the lowest level of the atmosphere is the thin chromosphere region, where spicules appear and stellar flares begin.
Granular in appearance, it comprises spicules of gaseous helium at an average temperature of 6,000°C. Each spicule averages 7,000 km in height but lasts for less than 8 minutes. The sunspots are cooler depressions in the photosphere. [A84] ...
The main structural feature of the chromosphere are its spicules. These "spikes" are narrow jets of bright gas which rise up from the photosphere and sink back down on a time scale of roughly 5 to 15 minutes.
Prominent features of the chromosphere include spicules, bright hydrogen alpha emission lines, and calcium H and K emission lines. The emission lines suggest that the chromosphere is thousands of degrees hotter than the photosphere.
A collection of atoms bound together that is the smallest collection that exhibits a certain set of chemical properties, mollusk : Any of an animal phylum (Mollusca) characterized by a large muscular foot and a mantle that secretes spicules or shells, ...
Rather, it forms a kind of nimbus around chromospheric features such as spicules and filaments, and is in constant, chaotic motion.
It is much fainter than the photosphere, so we can see it usually only during a total solar eclipse. Chromosphere is not a smooth sphere. It is composed of small spikes called spicules. These are shown in the following photo.
Within the supergranule boundaries, jets of material shoot into the chromosphere to an altitude of 4000 km (about 2500 mi) in 10 minutes. These so-called spicules are caused by the combination of turbulence and magnetic fields at the edges of the ...
Indeed from the base to the top of the chromosphere the temperature increases to about 100,000 degrees. The chromosphere also features spike-like jets of gas called spicules that can stick up as much as 10,000 km above the photosphere.
Fertile stems are at first tan-to-brown and unbranched, but later become like the sterile stems, which are more highly branched and green. All the stems have 10-18 spiny vertical ridges that contain silica spicules. The leaves ...
 See also: Solar, Field, Atmosphere, Temperature, Sun
  
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