Photosphere
Related Category: Astronomy: General
luminous, apparently opaque layer of gases that forms the visible surface of the sun or any other star.
Photosphere
The photosphere of an astronomical object is the region at which the optical depth becomes one for a photon of wavelength equal to 5000 angstroms.
Photosphere
The photosphere is typically regarded as the surface of our Sun.
photosphere
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Photosphere
Although we refer to the photosphere as a layer of the Sun, in actuality it is a part of the Sun's atmosphere.
Photosphere
This entry contributed by Dana Romero
The photosphere is the lowest layer of the Sun's three main atmospheric layers. It is the layer from which the Sun's visible light emanates. Just above the photosphere lies the chromosphere.
The photosphere (coming from "photo" the Greek word for light) sits between the chromosphere and the convection level within the Suns structure.
Definition: photosphere: The visible surface of the Sun; sunspots and faculae are observed in the photosphere.
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Photosphere
Wikipedia, the free encyclopedia - Cite This Source
The photosphere of an astronomical object is the region from which externally received light comes.
PHOTOSPHERE
Although there are no fires on the surface of the Sun, the photosphere seethes and roils, displaying the effects of the underlying convection. Photons flowing from below, trapped by the underlying layers, finally escape.
photosphere The visible surface of the Sun, lying just above the uppermost layer of the Sun's interior, and just below the chromosphere.
pixel One of many tiny picture elements, organized into an array, making up a digital image.
photosphere: the outer envelope of the sun which produces the visible light by which it is seen.
pinnules: sighting pinholes (usually in pairs) in an alignment device, e.g. an alidade.
PHOTOSPHERE - Point where a star's atmosphere appears to become completely opaque. Thus, the photosphere may be thought of as the imaginary surface from which the starlight that we see appears to be emitted.
Photosphere. The lowest layer of the solar atmosphere; corresponds to the solar surface viewed in white light. Sunspots and faculae are observed in the photosphere.
Photosphere- the visible surface of the sun or a star
Plage- bright regions seen in the solar chromosphere
Planetary nebula- a shell of gas puffed off by a star late in its life; their often round appearance led to the name ...
Photosphere
The effective temperature, or black body temperature, of the Sun (5777 K) is the temperature a black body of the same size must have to yield the same total emissive power.
Photosphere
(a) The region of a star which gives rise to the continuum radiation emitted by the star. The visible surface of the Sun (temperature about 6000K), just below the chromosphere and just above the convective zone.
Photosphere--The layer of the Sun from which all visible light reaches us. The Sun is too hot to have a solid surface and the photosphere consists of a plasma at about 6000 degrees centigrade.
photosphere
The surface of the Sun.
Pioneer
Pioneer 10 and 11 were the first probes to explore the outer planets in the 1970's.
Photosphere
The bright disk of the sun that is covered completely by a total Solar eclipse.
Planet Motion ...
Photosphere
The visible surface of the Sun; the upper surface of a convecting layer of gases in the outer portion of the sun whose temperature causes it to radiate light at visible wavelengths; ...
Photosphere. The bright visible surface of the Sun.
Planetary nebula. A shell of gas that surrounds a small, dense, hot star. The name is misleading because planetary nebulae have no connection with planets.
photosphere: The bright visible surface of the sun.
planet: A nonluminous object, larger than a comet or asteroid, that orbits a star.
Photosphere - The visible region of the atmosphere of the Sun or another star
Pixel - A "picture element," consisting of an individual detector in an array of detectors used to capture an image ...
Photosphere
The main layer of the Sun that we see is the photosphere. Even though the Sun is pretty much a big gas ball and has no solid surface, the photosphere is defined as the surface, mainly because you can't see what's underneath it.
The photosphere, chromosphere and corona
This composite image presents the three most visible elements of space weather: a storm from the Sun, aurora as seen from space, and aurora as seen from the Earth.
The Photosphere
Click on image for larger version.
The photosphere is the visible surface of the Sun that we are most familiar with.
Photosphere
The extremely thin, visible surface layer of the Sun or a star. The average temperature of the Sun's photosphere is about 5800 Kelvin (about 10,000° F).
Photosphere (`surface') : where light comes from
Granulation : results from sub-surface convection
Chromosphere : low density, pink, hotter, He discovery
Corona : large, very low density, very hot
Solar wind : aurora, comet tails pushed back ...
Photosphere The visible surface of the Sun. Above it are the chromosphere, then the corona.
Physics The science dealing with matter and energy and their interaction.
PHOTOSPHERE
The photosphere is the layer of the which is visible to us. It consists of a and has a temperature of about 10,800°F (6,000°C).
photosphere - (n.)
The visible surface layer of the sun and stars; the layer from which continuous radiation escapes and where absorption lines form.
photovoltaic cell - (n.) ...
Photosphere
The bright visible surface of the Sun.
Planemo
A large planet or planetary body that does not orbit a star. Planemos instead wander cold and alone through the cosmos.
[A] photosphere
[B] chromosphere
[C] corona
[D] All of the above
Studying X-ray emissions from stars help scientists learn about ...
Below the photosphere, the solar gas is sufficiently dense, and interactions among photons, electrons, and ions sufficiently common, that radiation cannot escape directly into space.
Above the photosphere is another layer of gas, about 2,000km thick, called the chromosphere. Its temperature is higher, with a typical value of 105K.
Above the photosphere lies a region called the chromosphere. It has this name because this layer of the Sun's atmosphere can be seen during the last moments before totality in a solar eclipse as a pinkish layer (hence color, or chromo).
photosphere (NASA Thesaurus / NASA SP-7, 1965) The intensely bright portion of the sun visible to the unaided eye.
photosphere the thin layer of the Sun where the gas just becomes thin enough for the photons from the interior can escape to space. It is the ``surface'' of the Sun.
discoverer of Pluto's moon Charon (331k jpg (Jim is the seated figure at left)) chromosphere the lower level of the solar atmosphere between the photosphere and the corona colles small hills or knobs.
The layer of the solar atmosphere above the PHOTOSPHERE and beneath the transition region and the CORONA. CHROMOSPHERIC EVENTS. Some flares are just Chromospheric Events without Centimetric Bursts or Ionospheric Effects.
In effect it represents the temeprature of the photosphere ('surface') of a star. Expressed in Kelvin, K. electron A fundamental particle of matter. A lepton, it has a rest mass, me of 9.109 x 10-31 kg and a charge, e of -1.602 x 10-19 C.
Chromosphere The layer of the solar atmosphere that is located above the photosphere and beneath the transition region and the corona. The chromosphere is hotter than the photosphere but not as hot as the corona.
In the Sun, a convection zone extends from just below the photosphere to about seventy percent of the solar radius.
In the instants when a sharp image of the photosphere is seen or photographed, it shows a granulated appearance like white flakes strewed fairly evenly upon a dark ground. The figs.
At the surface (the photosphere), rising magnetic fields locally cool the solar gases to make sunspots. Surrounding the whole affair is the magnetically heated solar corona, which is confined by great magnetic loops.
The inner layer of the Sun's tenuous atmosphere, the photosphere, is both the coolest and the brightest. As more and more of this "surface" is hidden by the Moon, the sky dims as Earth spins toward an unnatural twilight.
(a) Comparatively dark spot on the Sun's photosphere, commonly one of a (not always obvious) group of two.
The Sun has several layers: the core, the radiation zone, the convection zone, and the photosphere (which is the surface of the Sun). In addition, there are two layers of gas above the photosphere called the chromosphere and the corona.
It is a photosphere, much like the Sun's photosphere, radiating energy towards us, acting as a surface that completely surrounds us.
The sun is a typical star, with a visible surface called a photosphere, an overlying atmosphere of hot gases, and above them a more diffuse corona and an outflowing stream of particles called the solar (stellar) wind.
Spots look dark only by contrast with the surrounding photosphere, which is several thousand degrees hotter. The dark centre of a spot is called the umbra; the outer, lighter ring, the penumbra.
Sunspots are regions on the Sun's visible surface, or "photosphere," where gases have been trapped by magnetic fields.
The AIA watched as small flares generated by magnetic fields emerging onto the photosphere (the Sun's ‘surface') created magnetic Alfven waves in which solar plasma becomes ‘ ...
Sunspots are somewhat cooler places seen on the photosphere (the Sun's bright surface) where very intense magnetic lines of force break through.
Looking at the Sun is dangerous at any time when any part of the brilliant visible disk of the Sun (its photosphere) is visible; to do so can cause permanent eye damage.
Since the outer gas envelopes of the stars are in contact (overflowing their Roche lobes), they essentially share a common photosphere despite having two distinct nuclear-burning cores. Indeed, Stars B and C are separated by only some 0.
It will be used to explore the three-dimensional magnetic structures that emerge through the photosphere, the visible surface of the Sun, through the upper solar atmosphere -- the Transition Region and Corona.
Another way to look at the corona is to artificially block the bright light of the photosphere, to create the same effect as an eclipse.
A star Gaseous January At its core (the center) At the surface (or the photosphere) (or at sunspots on the surface or photosphere) Hydrogen Helium Fusion, also called atomic fusion or nuclear fusion About 4.5 billion years old Colder ...
 See also: Sun, Solar, Light, Temperature, Earth
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