Gold has always been considered as one of the most precious metals in the world .Gold has a fascinating history and a special place in the world. For thousands of years it was used as an ornament of kings, a currency and standard for global currencies, and more recently, in a wide range of everyday applications,electronic devices and medicine.Gold’s unique properties make it stand apart from the rest of the metals.
Gold’s Chemical and Physical Properties
Gold is a remarkable and rare metal.it has an unparalleled combination of chemical and physical properties..It does not rust or tarnish. In its pure form, gold has a metallic lusture and is sun yellow, but when mixed or alloyed with other metals, it creates various color hues ranging from silver-white to green and orange-red. These colors of gold are mostly used in jewelry.
Gold’s physical properties of high electrical conductivity and chemical inertness make it an excellent and reliable conductor .Gold is an excellent conductor of thermal energy.
Gold and Medicine
Gold has been used in medicine since the year 1927, when it was found to be useful in the treatment of rheumatoid arthritis. It is used in dentistry for tooth-fillings and false teeth.Gold instruments are used by surgeons to clear blocked arteries. In another medical application,gold pellets are injected into the patient’s body to help obstruct the spread of prostate cancer. Gold is also used in lasers.It is used to heal arthritis, epilepsy, spine curvature and many other diseases.Gold is also used for mental treatment. It is said to stimulate brain activity, and benefit creative thinking.
Gold and Spiritual power
Being a sun-color metal, gold is associated with sun power. Gold is assumed to give energy and power to the wearer.Gold when used with gemstones is said to transmit energy to the wearer. For example, ruby in gold setting is said to invigorate your body, while topaz with gold is said to make u look fabulously charming.
Gold in Telecommunications and Scientific Discoveries
Every year approximately 660 tons of gold are used in information technology, telecommunications and various other applications.Gold is a vital component in many electrical devices, including computers. It is used to manufacture approximately 50 million computers each year, and as well as millions of televisions, DVDs, VCRs, mobile phones and video cameras.
- The most detailed and precise images ever of planets Neptune and Uranus were captured by the Keck telescopes, that used gold-coated mirrors.
- Every telephone contains gold in its miniature transmitter in the mouthpiece. Because of its ability to convey superior signals, gold is also used to coat connecting cords and phone jacks.
- Air force One, the airplane that is used by the President of the United States, is protected from heat-seeking missiles by the use of gold-plated reflectors.
- Motor vehicle airbag deployment systems use gold-plated sensors .Gold is the only metal that is resistant and reliable enough to be used in these life-saving devices.
Gold And Religion
Many buildings,statues and religious temples have been covered with thin sheets of gold.In many Asian countries, such as China,India and Thailand, gold is used in religious ceremonies and social occasions, such as the Chinese New Year and Hindu poojas and marriages in India.
Gold and Games/Olympics
- The first Olympic gold medal was in 1908. Before that,winners received silver medals. Today’s gold medal is in fact made of silver guilded with at least six grams of pure gold.
- The World Cup trophy is made of solid 18ct gold and is 32cm high.
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