Filament
Related Category: Astronomy: General
in astronomy: see chromosphere.
More on Filament
Chromosphere - (kr´msfr´´) [Gr.
Definition: filament: A strand of cool gas suspended over the photosphere by magnetic fields, which appears dark as seen against the disk of the Sun; a filament on the limb of the Sun seen in emission against the dark sky is called a prominence.
Galaxy filament
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Galactic Filaments
A distribution of galaxies simulated using the Swinburne supercomputer. Each individual dot represents a single galaxy, and long filaments made up of thousands of galaxies are clearly visible.
Filaments and Plage
Filaments are dark, thread-like features seen in the red light of hydrogen (H-alpha). These are dense, somewhat cooler, clouds of material that are suspended above the solar surface by loops of magnetic field.
Filament is a structure in the Sun's corona consisting of cool plasma supported by magnetic fields. Filaments are dark structures when seen against the bright solar disk, but appear bright when seen over the solar limb (edge of the Sun).
filament--A mass of gas that appears as dark lines suspended over the photosphere by magnetic fields
fusion--The process by which two atoms unite to form a heavier atom in which energy is released ...
Filament. A mass of gas suspended over the photosphere by magnetic fields and seen as dark lines threaded over the solar disk. A filament on the limb of the Sun seen in emission against the dark sky is called a prominence.
FILAMENT - Dark, thread-like feature seen on the Sun in the red light of hydrogen (H-alpha). Filaments are dense, omewhat cooler, clouds of material suspended above the solar surface by loops of magnetic field.
Filament
a strand of cool gas suspended over the photosphere by magnetic fields, which appears dark as seen against the disk of the Sun.
Filament
A prominence seen in projection on the Solar disk.
Filar Micrometer ...
filament: On the sun, a prominence seen silhouetted against the solar surface.
filtergram: An image (usually of the sun) taken in the light of a specific region of the spectrum - e.g., an H-alpha filtergram.
Filament - A dark line on the Sun's surface when a prominence is seen projected against the solar disk ...
The sliding filament theory describes a process used by muscles to muscle contraction....
required for muscle contraction
Muscle contraction ...
Filaments of gas and dust stream across the center of the Milky Way galaxy in this new image from the European Southern Observatory. The center of the galaxy, which contains a supermassive black hole, is at center.
filament - (n.)
(a) A feature of the solar surface seen in Ha as a thin, dark wavy line. A filament is a prominence projected on the solar disk.
A filamentary loop nebula about 1 kpc distant, the remnant of a supernova that occurred about 300,000 years ago. [H76]
R Monocerotis ...
The filaments surrounding the edges of the nebula are what is left of the original outer layers of the star. The red color comes from emission of hydrogen.
Such filaments act to pinch matter together in turn leads (for large enough filaments) to gravitational instabilities that cause clumps to form along the filaments like beads on a string.
Huge filaments of dark matter have been detected in a survey of thousands of distant galaxies.
Plasma filament that extends from the solar corona.
A prominence is made up of relatively cold, dense plasma supported by the local magnetic field from falling back into the sun. They can survive like this for 200 days.
filamentary structure (NASA SP-7, 1965) A shell or membrane structure constructed of woven or layered filaments embedded in a suitable matrix.
farrum pancake-like structure filament a strand of cool gas suspended over the photosphere by magnetic fields, which appears dark as seen against the disk of the Sun; ...
Mysterious X-ray filaments are also seen in the image, and may mark the locations where huge magnetic structures are interacting with streams of energetic electrons produced by rapidly spinning neutron stars - features known as pulsar wind nebulas.
This meandering filament of dark nebulosity extends from the Northern tip of Pipe Nebula. It is located 1°15' NNE of q Ophiuchi (see finder chart below).
A fine network of filaments covering the sky detected in the far infrared by the IRAS satellite; believed associated with dust in the interstellar medium.
Infrared Outburst
A sudden brightening of an object at infrared wavelengths ...
Magnetically heated filamentary regions which appear near the limb of the .
The notion that the filaments are just the intersection of the survey slice with much larger structures (the bubble surfaces) was confirmed when the next three slices of the survey, lying above and below the first, were completed.
Pirani gage A thermal conductivity vacuum gage in which an increase of pressure from the zero point causes a decrease in the temperature of a heated filament of material having a large temperature coefficient of resistance, ...
Solar activity levels with at least one geophysical event or several larger radio events (10cm) per day (Class M Flares) ACTIVE DARK FILAMENT (ADF). An ACTIVE PROMINENCE seen on the DISK. ACTIVE LONGITUDE.
penumbra The outer filamentary region of a sunspot. periapsis The point in the orbit closest to the planet. perigee The point in the orbit closest to the Earth. perihelion The point in its orbit where a planet is closest to the Sun.
Often to denote a black body, a light bulb is used - remember, a black body is sort of a hot solid object like the filament in a light bulb.
The filament of a lightbulb has some large brightness (it has a very small surface area). When you look at the filament, its image is focused onto your retina in your eye and that image contains the full painful brightness of the filament.
Sources that depend on thermal emission from a solid filament, such as incandescent light bulbs, tend to have low overall efficacy compared to an ideal blackbody source because, as explained by Donald L.
Arches Cluster (inset) at X-ray wavelengths, with radio filaments
A cluster of about 150 hot, young stars concentrated within a radius of about one light-year, making it the most compact cluster of stars in our Galaxy.
Huge dark matter clumps the size of superclusters gather together under the action of gravity into a network of filaments. Where the dark matter filaments intersect, regular matter concentrates into galaxies and galaxy clusters.
It can be found: northeast of Delta and Gamma Sagittae, and southeast of Albireo (Beta1 Cygni); east of the Dumbbell Nebula; southwest of the Veil or Witch's Broom, Lace-work, Cirrus, Network, and Filamentary nebulae, ...
A solar prominence (also known as a filament) is an arc of gas that erupts from the surface of the Sun. Prominences can loop hundreds of thousands of miles into space.
These views, from a mosaic of ground- based (from the National Optical Astronomy Observatories) and Hubble images, show that the apparently smooth ring is actually made of myriad dense "comet-like" filaments that point away from the central star.
An incandescent or filament light bulb is an everyday example. As it gets hotter it gets brighter and emits more energy from its surface. The relationship between power and temperature is not a simple linear one though.
Such motions, and the pronounced wrapped filamentary structure seen in nearby jets such as M87 and Centaurus A, suggest an important role for motion in helical patterns.
Instead, superclusters of tens of thousands of galaxies are arranged in long, stringy, lacelike filaments, arranged around large voids.
These bands Julius calls dispersion bands, and then, assuming that a species of tubular structure prevails within a large part of the sun (such as the filaments of the corona suggest for that region), he applies the weakening of the light to explain, ...
This theory is a version of Jeans's theory in which the Sun interacts with a nearby protostar dragging a filament of material from the protostar.
These tend to be shaped as flattened disks, sheets, or filaments. These superclusters then form surfaces like the surfaces of bubbles, with virtual voids in between ( , 1986).
In a rarefied hot gas, emitted light no longer follows a simple pattern dictated by the temperature, like red-hot iron or a lightbulb filament (both of which are solid matter).
The Veil Nebula West (NGC 6960) and The Veil Nebula East (NGC 6992/95) are fine filaments seemingly suspended in the cosmos. It takes quite a large scope, perfect conditions, and plenty of patience to appreciate their delicate lines.
197. Infrared Cirrus
A fine network of filaments covering the sky detected in the far infrared by the IRAS satellite; believed associated with dust in the interstellar medium.
Stable filaments often become unstable and erupt, but they may also just fade away. The prominences never fall downward; they always erupt upward, because all unattached magnetic fields have a tremendous buoyancy and attempt to leave the Sun.
Increase the current through the bulb using the dimmer switch. Watch the color change as the temperature of the filament increases. This works best if you take off the lamp shade and use a clear bulb, rather than a frosted one.
The tungsten filament of a light bulb is T = 2,500 K hot and emits bright light, yet the peak of its spectrum is still in the infrared according to Wien's law.
The Hubble Space Telescope's high resolution has allowed astronomers to see dense star clusters, dust lanes with tiny regions of dense gas, and filaments of glowing gas in the core of a starburst galaxy.
The Largest structures discovered in the Universe are systems of voids and clusters. At this scale the Universe takes on a foamy look. The voids appear as great bubbles and galaxies lie along them in great filaments that connect Superclusters.
The Vela supernova remnant, a large wispy filamentous nebula is all that remains of a star that blew itself into rather spectacular pieces about 12,000 years ago. It is as wide as ten full moons.
it is known as the Keyhole Nebula, named by English mathematician and astronomer John Herschel in the 19th century. The Keyhole Nebula is about seven light-years in diameter and appears as a small, dark cloud of dust with contrasting bright filaments ...
It covers a region in the sky six times the diameter of the full Moon. The supernova exploded about 15,000-20,000 years ago and is still expanding. The nebula is almost spherical with some bright filaments.
Temperature also controls the type and quantity of thermal radiation emitted from a surface. One application of this effect is the incandescent light bulb, in which a tungsten filament is electrically heated to a temperature at which significant ...
colorful (usually red); shaped like a carrot, turnip, or jellyfish; enormous (reaching up to 98 kilometers / 58 miles above the cloudtops and about 16 kilometers / 10 miles in diameter); and often had delicate structures, being made up of filaments ...
The appearance of an SNR is basically spherical but there are random filamentary structures throughout. Recall that these shock waves and swept up bubbles are possible mechanisms for initiating star formation.
 See also: Light, Earth, Solar, Field, Energy
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