Paper

Paper is a thin material produced by pressing together moist fibres of cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets. It is a versatile material with many uses, including writing, printing, packaging, cleaning, and a number of industrial and construction processes.

The pulp papermaking process is said to have been developed in China during the early 2nd century AD, possibly as early as the year 105 A.D., by the Han court eunuch Cai Lun, although the earliest archaeological fragments of paper derive from the 2nd century BC in China. The modern pulp and paper industry is global, with China leading its production and the United States right behind it.

History

The oldest known archaeological fragments of the immediate precursor to modern paper, date to the 2nd century BC in China. The pulp papermaking process is ascribed to Cai Lun, a 2nd-century AD Han court eunuch. With paper as an effective substitute for silk in many applications, China could export silk in greater quantity, contributing to a Golden Age.

Exchange

Exchange may refer to:

Places

Business and economy

Paper Money

Paper Money (1974) is the second album by the California-based hard rock band Montrose. It was produced by Ted Templeman and is the band's final recording with original vocalist Sammy Hagar. It marks the arrival of new bass player Alan Fitzgerald, replacing original bassist Bill Church.

History

Already disenchanted with what he perceived to be the one dimensionality and commercially-waning popularity of his band's hard rock/proto-metal sound, Ronnie Montrose insisted on changing the formula for the group's sophomore release by broadening the stylistic, compositional, rhythmic, and sonic range of the band, and generally toning down the high-energy intensity and metallic crunch that defined the group's 1973 debut.

Musical diversity is the driving force behind Paper Money, which opens with the pop-flavored and radio-friendly "Underground", an unlikely cover of a song released the previous year by eccentric Warner Bros. labelmates Chunky, Novi & Ernie. Featuring an organ-like guitar sound created by using a Leslie speaker cabinet instead of a conventional guitar amplifier and given a major musical makeover that obscures the song's dark, death-obsessed lyrics ("Take me now or let me die... change me into a maggot pie"), "Underground" sets the tone for an album that is unpredictable at every turn and covers a broad musical spectrum which includes an acoustic ballad cover - the piano-laced "Connection" by the Rolling Stones) - and an upbeat 1960s-influenced instrumental, "Starliner". Ronnie Montrose heightens and expands his own presence by contributing lead vocals on the sparse and pensive ballad "We're Going Home", which features mellotron provided by guest keyboardist Nick DeCaro who would later join Ronnie Montrose's post-Montrose 'Open Fire' band.

Gold

Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable and ductile metal. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements, and is solid under standard conditions. The metal therefore occurs often in free elemental (native) form, as nuggets or grains, in rocks, in veins and in alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum) and also naturally alloyed with copper and palladium. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides).

Gold's atomic number of 79 makes it one of the higher atomic number elements that occur naturally in the universe. It is thought to have been produced in supernova nucleosynthesis from the collision of two neutron stars and to have been present in the dust from which the Solar System formed. Because the Earth was molten when it was just formed, almost all of the gold present in the early Earth probably sank into the planetary core. Therefore, most of the gold that is present today in the Earth's crust and mantle is thought to have been delivered to Earth later, by asteroid impacts during the late heavy bombardment, about 4 billion years ago.

One red paperclip

The website One red paperclip was created by Canadian blogger Kyle MacDonald, who bartered his way from a single red paperclip to a house in a series of fourteen online trades over the course of a year. MacDonald was inspired by the childhood game Bigger, Better, and the site received a considerable amount of notice for tracking the transactions. "A lot of people have been asking how I've stirred up so much publicity around the project, and my simple answer is: 'I have no idea'", he told the BBC.

Trading timeline

MacDonald made his first trade, a red paper clip for a fish-shaped pen, on July 14, 2005. He reached his goal of trading up to a house with the fourteenth transaction, trading a movie role for a house. This is the list of all transactions MacDonald made: