Guy

Guy may refer to:

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Dawn

Dawn (from an Old English verb dagian "to become day") is the time that marks, depending on the specific usage, the beginning of the twilight before sunrise, the period of the pre-sunrise twilight or the time of sunrise. When identified as the beginning of or the period of twilight, it is recognized by the presence of weak sunlight, while the Sun itself is still below the horizon.

Types of dawn

Different definitions exist for the start of dawn. The difference between these definitions is the amount of sunlight that must be present. This can be correlated with the angular distance of the centre of the Sun (degrees) below the horizon, in the morning:

Dawn of astronomical twilight

Astronomical twilight begins at the moment after which the sky is no longer completely dark. This occurs when the Sun is 18 degrees below the horizon in the morning. Though it is possible to localize the direction of the Sun during astronomical dawn and dusk, people in general experience astronomical dawn and dusk as night, even without clouds. The zenith is dark and more than just the brightest stars can be seen (except low above the horizon in the direction of the sun).

Turquoise

Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula CuAl₆(PO
4)₄(OH)₈·4H
2O. It is rare and valuable in finer grades and has been prized as a gem and ornamental stone for thousands of years owing to its unique hue. In recent times, turquoise, like most other opaque gems, has been devalued by the introduction of treatments, imitations, and synthetics onto the market.

The substance has been known by many names, but the word turquoise, which dates to the 17th century, is derived from the French turques for "Turks", because the mineral was first brought to Europe from Turkey, from mines in the historical Khorasan Province of Persia.Pliny the Elder referred to the mineral as callais and the Aztecs knew it as chalchihuitl.

Properties of turquoise

The finest of turquoise reaches a maximum hardness of just under 6, or slightly more than window glass. Characteristically a cryptocrystalline mineral, turquoise almost never forms single crystals and all of its properties are highly variable. Its crystal system is proven to be triclinic via X-ray diffraction testing. With lower hardness comes lower specific gravity (2.60–2.90) and greater porosity: These properties are dependent on grain size. The lustre of turquoise is typically waxy to subvitreous, and transparency is usually opaque, but may be semitranslucent in thin sections. Colour is as variable as the mineral's other properties, ranging from white to a powder blue to a sky blue, and from a blue-green to a yellowish green. The blue is attributed to idiochromatic copper while the green may be the result of either iron impurities (replacing aluminium) or dehydration.

Remix

A remix is a piece of media which has been altered from its original state by adding, removing, and/or changing pieces of the item. A song, piece of artwork, book, video, or photograph can all be remixes. The only characteristic of a remix is that it appropriates and changes other materials to create something new.

Most commonly, remixes are associated with music and songs. Songs are remixed for a variety of reasons:

Hernán Cattáneo

Hernán Cattáneo (Spanish pronunciation: [eɾˈnaŋ kaˈtane.o]) is an Argentinian house DJ.

Career

Cattáneo began his professional career playing in the early 1990s for the FM Z95, a local radio station largely responsible for the diffusion of electronic dance music in Argentina.

In 1996, he won the residency at Clubland Pacha in Buenos Aires.

As a DJ with an ever increasing fanbase, he rose to No. 22 and then to No. 6 on the DJ Mag poll of the Top 100 DJs.

In May 2007 he released Sequential Volume 2, which was once again followed by another worldwide tour to promote the compilation.

Discography

Compilations