Gold is a great electricity and heat provider. However, by non-viability, it is practically unusable for these purposes.
Besides the charm and ostentation that carries, gold (the isotope form Au 198) is used in cancer treatment, in the processes of photography (such as chloroauric acid) or like coating satellites, for being excellent reflector of infrared radiation.
Since antiquity there is evidence of the existence and need of gold. There are traces of its passage in the holy bible and in hieroglyphs written in Egypt approximately 2.600 B.C, therefore there is no unanimous responsibility for its discoveries.
In the starting of the 1800s the world adopted gold as the standard coin so called “Standard Gold’. The end of gold was in the first half of the 20th century, with the outbreak of World War I, when the price was no longer able to meet the demands of war.