Sky

The sky (or celestial dome) is everything that lies above the surface of the Earth, including the atmosphere and outer space.

In the field of astronomy, the sky is also called the celestial sphere. This is viewed from Earth's surface as an imaginary dome where the sun, stars, planets, and the moon are seen to be traveling. The celestial sphere is conventionally divided into regions called constellations. Usually, the term sky is used informally as the point of view from the Earth's surface; however, the meaning and usage can vary. In some cases, such as in discussing the weather, the sky refers to only the lower, more dense portions of the atmosphere.

During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface or region scattered with stars. During the day, the Sun can be seen in the sky unless obscured by clouds. In the night sky (and to some extent during the day) the moon, planets and stars are visible in the sky. Some of the natural phenomena seen in the sky are clouds, rainbows, and aurorae. Lightning and precipitation can also be seen in the sky during storms. Birds, insects, aircraft, and kites are often considered to fly in the sky. Due to human activities, smog during the day and light pollution during the night are often seen above large cities.

Sky blue

Sky blue is the name of a color that resembles the color of the sky at noon. The entry for "sky-blue" in Murray's New English Dictionary (1919) reports a first sighting of the term in the article on "silver" in Ephraim Chambers's Cyclopaedia of 1728. However, many writers had used the term "sky blue" to name a color before Chambers. For example, we find "sky blue" in A Collection of Voyages and Travels (London: Awnsham and John Churchill, 1704), vol. 2, p. 322, where John Nieuhoff describes certain flowers: "they are of a lovely sky blue colour, and yellow in the middle". The sense of this color may have been first used in 1585 in a book by Nicolas De Nicolay where he stated "the tulbant of the merchant must be skie coloured".

Displayed at right is the web colour sky blue.

Variations of sky blue

Celeste

Celeste (pronounced che-les-te in Italian se-lest in English) is the colloquial name for the pale turquoise blue colour associated with Italian bicycle manufacturer Bianchi S.p.A and sometimes known as Bianchi Green. In Italian, as the name indicates (Celestial), it is an attempt to reproduce the colour of clear skies. In English, this colour may also be referred to as Italian sky blue.

Sky (song)

"Sky" is a song co-written and recorded by British singer and DJ Sonique. It was released in September 2000 as the third single from the album, Hear My Cry.

Track listing

Official versions

Chart positions

Peak positions

References

SAN

San or SAN may refer to:

Places

People

Arts

San (letter)

]........ΑΝΤΑΣ:ΧΑ.[
]....ΚΕΑΣ:ΑΝΓΑΡΙΟΣ[
]...ΑΥϜΙΟΣ:ΣΟΚΛΕΣ:[
].ΤΙΔΑΣ:ΑΜΥΝΤΑΣ[
]ΤΟΙ ΜΑΛΕϘΟ:ΚΑΙ.[

San (Ϻ) was an archaic letter of the Greek alphabet. Its shape was similar to modern M, or to a modern Greek Sigma (Σ) turned sideways, and it was used as an alternative to Sigma to denote the sound /s/. Unlike Sigma, whose position in the alphabet is between Rho and Tau, San appeared between Pi and Qoppa in alphabetic order. In addition to denoting this separate archaic character, the name "San" was also used as an alternative name to denote the standard letter Sigma.

Historical use

Sigma and San

The existence of the two competing letters Sigma and San is traditionally believed to have been due to confusion during the adoption of the Greek alphabet from the Phoenician script, because Phoenician had more sibilant (s-like) sounds than Greek had. According to one theory, the distribution of the sibilant letters in Greek is due to pair-wise confusion between the sounds and alphabet positions of the four Phoenician sibilant signs: Greek Sigma got its shape and alphabetic position from Phoenician Šin (), but its name and sound value from Phoenician Samekh. Conversely, Greek Xi (Ξ) got its shape and position from Samekh (), but its name and sound value from Šin. The same kind of pair-wise exchange happened between Phoenician Zayin and Tsade: Greek Zeta has the shape and position of Zayin () but the name and sound value of Tsade, and conversely Greek San has the approximate shape and position of Tsade () but may originally have had the sound value of Zayin, i.e. voiced [z]. However, since voiced [z] and voiceless [s] were not distinct phonemes in Greek, Sigma and San came to be used in essentially the same function.

Sun

The Sun (in Greek: Helios, in Latin: Sol) is the star at the center of the Solar System and is by far the most important source of energy for life on Earth. It is a nearly perfect spherical ball of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. Its diameter is about 109 times that of Earth, and it has a mass about 330,000 times that of Earth, accounting for about 99.86% of the total mass of the Solar System.About three quarters of the Sun's mass consists of hydrogen; the rest is mostly helium, with much smaller quantities of heavier elements, including oxygen, carbon, neon and iron.

The Sun is a G-type main-sequence star (G2V) based on spectral class and it is informally referred to as a yellow dwarf. It formed approximately 4.567 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became increasingly hot and dense, eventually initiating nuclear fusion in its core. It is thought that almost all stars form by this process.

Sun (Thomas Bergersen album)

Sun is the second stand-alone production album created by Thomas J. Bergersen from Two Steps from Hell, released on September 30, 2014. The release contains 16 tracks, featuring vocal performances by Merethe Soltvedt, Molly Conole and other vocalists. The album cover and artwork are designed by Bergersen himself. The album was announced for pre-order on September 9 across iTunes, Amazon, and CD Baby, with the tracks "Empire of Angels," "Final Frontier," and "Starchild" made available on iTunes prior to the full release. In addition, a signed limited deluxe edition CD version has been scheduled for somewhere in 2015, set to include additional music, notes on each track written by Thomas, and a large-size poster featuring his artwork.

Track listing

Use in media

The tracks from Two Steps from Hell are frequently used in film trailers and other promotional materials.