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.

Expo

Expo may refer to:

See also

Gold Coast

Gold Coast may refer to:

Places

Africa

McGraw Hill Financial

McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in New York City. Its primary areas of business are financial information and analytics. It is the parent company of Standard & Poor's Ratings Services, S&P Capital IQ, Platts, J.D. Power and Associates, and is the majority owner of the S&P Dow Jones Indices joint venture.

Corporate history

The predecessor companies of McGraw Hill Financial have history dating to 1888, when James H. McGraw purchased the American Journal of Railway Appliances. He continued to add further publications, eventually establishing The McGraw Publishing Company in 1899. John A. Hill had also produced several technical and trade publications and in 1902 formed his own business, The Hill Publishing Company. In 1909 both men, having known each other's interests, agreed upon an alliance and combined the book departments of their publishing companies into The McGraw-Hill Book Company. John Hill served as President, with James McGraw as Vice-President. In 1917, the remaining parts of each business were merged into The McGraw-Hill Publishing Company, Inc. In 1986, McGraw-Hill bought out competitor The Economy Company, then the United States' largest publisher of educational material. The buyout made McGraw-Hill the largest educational publisher in the United States.

EB Games Expo

EB Games Expo, commonly known as EB Expo or EBX, is a video game trade fair / convention held annually in Australia. It is organised by EB Games Australia. It is used by many video game developers to show off their upcoming games and game-related hardware. Unlike E3, EB Expo allows members of the general public to attend. EB Expo is Australia's largest games event with over 38,000 attending the show in 2013. The most recent show was held in 2014 from 3 to 5 October.

EB Games Expo 2011

EB Games Expo 2011 was held at the Gold Coast Convention and Exhibition Centre from 15-16 October it was the first time the event was open to the public. The expo was attended by 14,278 people and 26 exhibitors.

Exhibitors

EB Games Expo 2012

EB Games Expo 2012 was held at the Sydney Showground from 5-7 October, and was the first time it was held at the venue. It was announced during the Friday and Saturday 'Twilight Spectacular' shows that the Expo will be held at the same location in 2013 and 2014, as part of a 3-year contract for the event organiser. The expo was attended by 30,745 people and 32 exhibitors.