During the Klondike Gold Rush, gold was used as currency. It was eliminated from common coinage in 1933, yet gold is well used in today’s world that the average person doesn’t realize.
Gold is a heavy, yellow metallic chemical element. It has the greatest density of any mineral and because of its high density, it collects in streams as placer gold. Miners collected the gold nuggets and gold dust in pans, rockers, and sluice boxes. Pure gold is a soft metal that scratches, bends, and breaks easily. Therefore, gold is often mixed with other metals for use in jewelry.
Gold is reflective and is an excellent conductor of electricity. It can be drawn or molded into wire or threads. It doesn’t tarnish, rust, or dissolve in water and most acids. Due to this nature, gold is now used in many technical fields. Did you know that gold is used in the trigger deployment system of airbags in cars? Auto manufacturers use gold to dry paint on their cars. Gold-plated connectors operate in a car’s engine to withstand high temperatures and corrosive environment under a car’s engine hood.
Many aircraft use gold-coated acrylic windows in cockpits to help the windows stay clear of frost and fogging. The reflectability of gold helps keep the cockpit cool on hot runways. It also maintains the heat of the cabin while in flight at high, cold altitudes. Did you know that Air Force One uses gold reflectors to confuse an incoming missile’s heat-seeking signal? It makes it difficult for the guidance system to focus on its target. Gold protects the onboard computers in the Galileo space probe. It is used in satellites and the space shuttle’s electronic circuitry.
A telephone’s mouthpiece has a transmitter that contains gold in the diaphragm. Telephone jacks and connecting cords also use gold for contacts. Gold is the best material to use in microcircuits of electronic equipment. Did you know that gold is used in medical monitoring equipment?
Wouldn’t those miners of yesterday be surprised how precious gold has become? I found this information interesting.