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Topic: Sun (disambiguation)


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  Sun - Facts, Information, and Encyclopedia Reference article
The Sun is classified as a main sequence star, which means it is in a state of "hydrostatic balance", neither contracting nor expanding, and is generating its energy through nuclear fusion of hydrogen nuclei into helium.
The Sun has a spectral class of G2V, with the G2 meaning that its color is yellow and its spectrum contains spectral lines of ionized and neutral metals as well as very weak hydrogen lines [1], and the V signifying that it, like most stars, is a "dwarf" star on the main sequence[2].
The Sun's radius is measured from centre to the edges of the photosphere.
www.startsurfing.com /encyclopedia/s/u/n/Sun.html   (3586 words)

  
  ooBdoo
The Sun's radius is measured from its center to the edge of the photosphere.
The optical surface of the Sun (the photosphere) is known to have a temperature of approximately 6,000 K.
In 1890 Joseph Lockyer, the discoverer of helium in the solar spectrum, proposed a meteoritic hypothesis for the formation and evolution of the sun.
www.oobdoo.com /wikipedia/?title=Sun   (6836 words)

  
 Clinton Goveas :: Wikipedia Reference
The Sun's magnetic field gives rise to many effects that are collectively called solar activity, including sunspots on the surface of the Sun, solar flares, and variations in the solar wind that carry material through the solar system.
The Sun's radius is measured from its center to the edge of the photosphere.
The optical surface of the Sun (the photosphere) is known to have a temperature of approximately 6,000 K.
www.clintongoveas.com /wikipedia/?title=Sun   (6865 words)

  
 Sun   (Site not responding. Last check: 2007-10-08)
The Sun's magnetic field gives rise to many effects that are collectively called solar activity, including sunspots on the surface of the Sun, solar flares, and variations in the solar wind that carry material through the solar system.
When observing the Sun with appropriate filtration, the most immediately visible features are usually its sunspots, which are well-defined surface areas that appear darker than their surroundings because of lower temperatures.
In many prehistoric and ancient cultures, the Sun was thought to be a solar deity or other supernatural phenomenon, and worship of the Sun was central to civilizations such as the Inca of South America and the Aztecs of what is now Mexico.
www.wikipedia-mirror.co.za /s/u/n/Sun.html   (6780 words)

  
 sun
Tidal effects from the planets do not significantly affect the shape of the Sun, although the Sun itself orbits the center of mass of the solar system, which is located nearly a solar radius away from the center of the Sun mostly because of the large mass of Jupiter.
The optical surface of the Sun (the photosphere) is known to have a temperature of approximately 6,000 K. Above it lies the solar corona at a temperature of 1,000,000 K. The high temperature of the corona shows that it is heated by something other than the photosphere.
Among the proposals were that the Sun extracted its energy from friction of its gas masses, or that its energy was derived from gravitational potential energy released as it continuously contracted.
hometown.aol.de /muckezak/wo-17295.html   (6181 words)

  
 Sun - Encyclopedia, History, Geography and Biography
The solar constant is equal to approximately 1,370 watts per square meter of area at a distance of one AU from the Sun (that is, on or near Earth).
When observing the Sun with appropriate filtration, the most immediately visible features are usually its sunspots, which are well-defined surface areas that appear darker than their surroundings due to lower temperatures.
The concept of heliocentrism, which locates the Sun at the centre of the solar system, was first recorded in ancient India by Yajnavalkya (circa 9th century BC) in his work Shatapatha Brahmana, which referred to the Earth as a sphere and to the Sun as the "centre of spheres".
www.arikah.net /encyclopedia/Sun   (5969 words)

  
 Sun information - Search.com
When observing the Sun with appropriate filtration, the most immediately visible features are usually its sunspots, which are well-defined surface areas that appear darker than their surroundings due to lower temperatures.
The concept of heliocentrism, which locates the Sun at the centre of the solar system, was first recorded in ancient India by Yajnavalkya (circa 9th century BC) in his work Shatapatha Brahmana, which referred to the Earth as a sphere and to the Sun as the "centre of spheres".
In the 1800s, spectroscopic studies of the Sun increased in sophistication, and Joseph von Fraunhofer made the first observations of absorption lines in the spectrum, the strongest of which are still often referred to as Fraunhofer lines.
www.search.com /reference/Sun   (6710 words)

  
 Bambooweb: Sun
The Sun is a main sequence star, with a spectral class of G2, meaning that it is somewhat more massive and hotter than the average star but far smaller than a blue giant star.
The Sun is a near-perfect sphere, with an oblateness estimated at about 9 millionths, which means the polar diameter differs from the equatorial by 10 km at most.
All matter in the Sun is in the form of plasma due to its extreme temperature.
www.bambooweb.com /articles/s/u/Sun.html   (682 words)

  
 CalendarHome.com - - Calendar Encyclopedia   (Site not responding. Last check: 2007-10-08)
About 74% of the Sun's mass is hydrogen, 25% is helium, and the rest is made up of trace quantities of heavier elements.
The title Sol Invictus ("the undefeated Sun") was applied to several solar deities, and depicted on several types of Roman coins during the 3rd and 4th centuries.
The birth of "the undefeated Sun" was celebrated on the 25th of December from at least as early as 354.
encyclopedia.calendarhome.com /cgi-bin/encyclopedia.pl?p=Sun   (6819 words)

  
 The Sun (newspaper) at AllExperts
The Sun is a tabloid daily newspaper published in the United Kingdom and the Republic of Ireland with the highest circulation of any daily English-language newspaper in the world, standing at 3,154,881 copies daily in early 2006 [1], (compared to USA Today, the best-selling US newspaper at 2,281,831 [2]).
Politically, The Sun in the early Murdoch years remained nominally Labour, although in the two 1974 elections, the paper's attitude to Labour was "agnostic", according to Roy Greenslade in Press Gang (2003).
The Suns ultra-patriotism has, however, outgrown the racism some claim it came close to embracing in the 1970s and 1980s â€" the nadir was its coverage of the Broadwater Farm riot of 1985 â€" perhaps because Murdoch and his editors have realised that it needs to appeal to ethnic minority readers to sell its paper.
en.allexperts.com /e/t/th/the_sun_(newspaper).htm   (3025 words)

  
 sun | English | Dictionary & Translation by Babylon
Sun worship, in the occult sense, was once the universal foundation of religion, but it has mostly given place to what is really lunar worship.
The sun is often found contrasted with the moon as spiritual is with material; and solar magic means white magic as contrasted with the dark lunar magic.
Our visible sun, though the center of its system, is not the father of the planets but their "co-uterine brother," one of the "eight sons of Aditi." It is not the creator of the fohatic forces, but their radiating focus.
www.babylon.com /definition/sun/English   (558 words)

  
 Sun -   (Site not responding. Last check: 2007-10-08)
The Sun is about 4.6 billion years old and is about halfway through its main-sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium.
The Sun orbits the center of the Milky Way galaxy at a distance of about 25,000 to 28,000 light-years from the galactic center, completing one revolution in about 225–250 million years.
One way to view the Sun safely is by projecting an image onto a screen using binoculars or a small telescope.
en.wikipedia.christams-ornament.com /wiki/Sun   (4215 words)

  
 Sun (disambiguation) - Wikipedia, the free encyclopedia
Sun Wukong, often referred to as the Monkey King, central character of the Journey to the West
Sun Jian (155 – 191), military general loyal to the emperor of the Han Dynasty
Sun Ce (175 – 200), son of Sun Jian and a rising warlord in southeastern China
en.wikipedia.org /wiki/Sun_(disambiguation)   (521 words)

  
 Sun
Theories proposed to resolve the problem either tried to reduce the temperature of the Sun's interior to explain the lower neutrino flux, or posited that electron neutrinos could oscillate, that is, change into undetectable tauon and muon neutrinos as they traveled between the Sun and the Earth.
In the early 17th century, Galileo pioneered telescopic observations of the Sun, making some of the first known observations of sunspots and positing that they were on the surface of the Sun (rather than small objects passing between the Earth and the Sun as had previously been supposed).
In the 1800s, spectroscopic studies of the Sun increased in sophistication, and Joseph von Fraunhofer made the first observations of absorption lines in the spectrum, the strongest of which are still often referred to as Fraunhofer lines.
savage-comedy.com /_Sun   (6588 words)

  
 Sun Microsystems   (Site not responding. Last check: 2007-10-08)
Sun Microsystems is headquartered on the west campus of Agnews Developmental Area in Santa Clara, California, which was formerly an asylum.
Sun has had a difficult time keeping up with its competitors' processors' clock speed and computing power, but its customer base has been fairly loyal due to the popularity, and legendary stability, of its SunOS (and later Solaris) versions of Unix.
In the late-1990s, as Sun's workstations were lagging in performance when compared to that of their competitors and especially to Wintel Personal Computers, the company successfully transformed itself to a vendor of large-scale Symmetric multiprocessing servers.
www.punweb.com /article/Sun_Microsystems   (2165 words)

  
 Sun
The Sun is a main sequence star, with a spectral class of G2, meaning that it is somewhat bigger and hotter than the average star but far smaller than a red giant star.
This releases energy which escapes from the surface of the Sun as light.
The astronomical symbol for the sun is the circumpunct.
www.guajara.com /wiki/en/wikipedia/s/su/sun.html   (449 words)

  
 sun - OneLook Dictionary Search
Sun, sun : The American Heritage® Dictionary of the English Language [home, info]
Phrases that include sun: sun star, sun bathing, sun bittern, sun struck, sun worship, more...
Words similar to sun: sunbathe, sunday, sunlight, sunned, sunning, sunshine, bask, lord's day, sol, more...
www.onelook.com /?loc=pub&w=sun   (494 words)

  
 Sun Sol The sun ...
At the center of the Sun, where its density is 1.5 × 105 kg m-3, thermonuclear reactions (nuclear fusion) convert hydrogen into helium.
The solar activity cycle includes old magnetic fields being stripped off the Sun's surface starting from one pole The corona has 1011 atoms/m3, and the photosphere has 1023 atoms/m3.
Coronal mass ejection "Caution: looking directly at the sun can damage the retina and one's eyesight." The astronomical symbol for the sun is a circle with a point at its centre.
www.geodatabase.de /Sun   (509 words)

  
 Sun City - Wikitravel
Sun City (South Africa) - a city in South Africa.
Sun City (Arizona) - A town in Arizona.
Sun City (California) - A town in California.
wikitravel.org /en/Sun_City   (99 words)

  
 Sun information - Search.com   (Site not responding. Last check: 2007-10-08)
Health > Beauty > Skin Care > Sun Care">Shopping >...
North America > United States > Wisconsin > Localities > S > Sun Prairie">Regional >...
Health > Beauty > Skin Care > Sun Care > Tanning Beds">Shopping >...
domainhelp.search.com /reference/Sun   (6709 words)

  
 Sun Clock
The Sun (occasionally referred to as Sol) is the star at the centre of our solar system.
Planet Earth orbits the Sun, as do innumerable other bodies including other planets, asteroids, meteoroids, comets and dust.
A clock (from the Latin cloca, " bell ") is an instrument for measuring time.
www.altvetmed.com /face/101-sun-clock.html   (493 words)

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