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Some of the multiple uses of gold
The most useful metal
Of all the minerals mined from Earth, nothing is more beneficial than gold. Its usefulness derives from a variety of special features. Gold conducts electricity, does not spoil, is very easy to operate, can spread over the wire, can be hammered into thin sheets, alloys with many other minerals, can melt and pour highly detailed shapes, and has a bright color and sparkly. Gold is an unforgettable mineral that has a special place in the human mind.
A little history of gold
When Spanish explorers first reached the “New World”, they met the people of South America. These two cultures were separated by vast ocean, never touching one another, speaking different languages and living a completely different life. However, they had one thing in common: they kept the gold in mind and used it to make some of their most important things.
Throughout the history of our planet, almost all well-established cultures have used gold to symbolize strength, beauty, purity and success. Today we continue to use gold for our most important things: wedding rings, Olympic medals, Oscar, Grammy, Silver, Cross and Religious Art. No other material of the same scarcity occupies a more visible and important place in our society.
Jewelry: the main use of gold
Gold has been used to make jewelry and jewelry for thousands of years. It is very easy to create gold nuggets on a table, and it may be one of the first minerals that humans use. Today, most of the gold recently extracted or recycled is used in the jewelry industry. About 78% of the gold consumed each year is used in the jewelry industry.
The special properties of gold make it perfect for jewelry making. These include: very high gloss; Yellow color desirable; Resistance to tarnishing the ability to pull wires, throw them into sheets or pour them into shapes. These are all interesting metallic properties that can be used easily for beautiful things. Another very important factor that requires the use of gold as a metal for jewelry is imitation. We expect that important things will be gold.
Pure gold is so soft that it cannot withstand the pressure of many jewels. Craftsmen have learned that mixing gold with other metals such as copper, silver and platinum will increase its lifespan. Since then, most of the gold used in the jewelry industry has been a gold snail with one or more other metals.
Gold bars have a lower value per unit of weight than pure gold. A commercial standard known as “Karate” has been developed to determine the gold content of these alloys. Pure gold is known as 24 carat gold and is always marked with the mark “24 carat”. Alloys that weigh 50% gold are known as 12 carats (12/24) and are marked with a “12K”. The alloys containing 75% gold by weight are 18 carats (18/24 = 75%) and of the brand “18 carats”. In general, high carat jewelry is smoother and more resistant to deformation, while low carat jewelry is stronger and less resistant to deformation, especially in contact with sweat.
Gold bars with other metals change the color of the final products (see figure). 75% gold, 16% silver and 9% copper alloys produce yellow gold. White gold is an alloy of 75% gold, 4% silver, 4% copper and 17% palladium. Other alloys produce pink, green, peach and even black minerals.
The use of gold in electronics
The main industrial use of gold in the electronics industry. Solid-state electronics use very low voltage and currents that can be easily interrupted by wear or fog at contact points. Gold is a very effective conductor that can transport these small currents and remain corrosion-free. The electronic components are very reliable. Gold is used for conductors, relay and switch connectors, welding joints, wire, and conduction strips.
A small amount of gold is used in almost all sophisticated electronic devices. These include mobile phones, calculators, personal digital assistants, GPS devices, and other small electronic devices. Most large electronics like televisions also contain gold.
One of the challenges of using gold in very small quantities in very small appliances is losing the metal from society. Nearly a billion cell phones are manufactured every year, and most of them contain about fifty cents of gold. Their average age is less than two years and very few of them are currently recycled. Although the amount of gold in each device is small, the large number leads to a lot of non-recycled gold.