Gold – one of the most expensive metals that exist on our planet. And another one of the rarest.
It was used as a means of payment, for accumulations and the manufacture of jewelry and was considered a sign of prosperity and well-being.
Therefore, interest in his search and the prey grew over many hundreds of years.
Just imagine: for the entire history of mankind it was acquired about 161 thousand tons of gold!
Gold – one of the most expensive metals that exist on our planet. And another one of the rarest.
It was used as a means of payment, for accumulations and the manufacture of jewelry and was considered a sign of prosperity and well-being.
Therefore, interest in his search and the prey grew over many hundreds of years.
Just imagine: for the entire history of mankind it was acquired about 161 thousand tons of gold!
1. The pure gold is elastic
The pure gold is so plastic that only one golden ounce – about 30 úÓἫó@ – can spread over 80 kilometers without breaking (but it will be far too fine to see). If they do this trick with all the gold existing in the world, they can wrap the earth 11 million times.
2. You don't have to bite the gold
Despite popular belief, gold on the tooth is not the safest way to try to determine its authenticity: other metals are also quite soft so that the trace of the teeth remained on them. And although many masters "chew" the prizes, the Olympic gold medals were not made of this metal from the time of the 1912 Summer Games in Stockholm. Modern gold medals consist mainly of silver: in the medals at the 2016 Games in Rio it contained only 1.2% of gold.
3. The Nobel Prize is made of gold
The Nobel Prize medal is still made from gold, although in 1980 its sample was reduced by 23 carats to 18.
Now the weight of the medal is 175 grams.
4. The gold can change color
Being a yellow element by nature, gold can change color when mixed with other metals, which gives it additional durability. White gold contains nickel or palladium, pink acquires a shade from copper.
There is even green gold, in which there are admixtures of silver, and sometimes zinc or cadmium. To determine how much gold is contained in any piece, divide the karate by 24 and multiply by 100. The obtained percent will also mean the number of gold.
5. Gold has been used in medicine for thousands of years
The ancient Romans made dental bridges from it - they learned it from Etruskov. During the greater part of the 20th century In the 19th century, with the help of intramuscular injections from compounds of gold, which have anti-inflammatory properties, doctors reduced pain and edema in patients with rheumatoid arthritis. Today some oncologists use gold compounds to reduce cancer tumors.
6. In order to remove the gold from the admixture, the metal should be very hot
The term "bullion", which is used to describe gold bars or coins ready for sale, comes from the Latin word "boiling" – bullitus. That's why the impurities can be removed from the gold "only" at 2856 degrees Celsius.
7. Currently, the US Treasury holds 147.3 million ounces of gold in bars
About half are kept in Fort Nokse – a hiding place worth more than 130 billion dollars. In Fort-nokse the level of security was so high that only one president appeared in the storage facility. He was Franklin Delano Roosevelt - the president who stopped the gold standard in the USA in 1933: so he was about to put an end to the Great Depression. Only in 1971 did the free exchange of dollars for gold in the USA finally renounced.
8. The majority of the world's gold is now acquired in China
In 2017, the Asian country overtook South Africa in terms of the overall historical volume of precious metal production. But the largest single crystal in the world - an extremely rare geometric formation that can be found in the form of gold - weighed 217.78 grams and was found in Venezuela some decades ago.
9. Some gold comes from the sewage
Among the most strange and unpleasant sources of gold – the purified sewage. In 2015, after analyzing sewer deposits from local purification structures, researchers from the University of Arizona came to the conclusion that the wastewater produced annually in the city with a population of one million people contains 2.6 million dollars of gold and silver included on average.
10. Currently, people have acquired 80% of the world's gold
We have already acquired about 80% of 244 thousand tons of world gold reserves. Oceanic water and the seabed still contain about 20 million tons, but this treasure remains untouched mainly because of the excessively high costs of its acquisition. The largest find is in space: one asteroid "Psycheya 16" costs about a hundred quintillion dollars.
11. But until people brought the gold into the cosmos and did not seize it
The cosmic diving suits and ships are covered in the gold to reflect the Sun's harmful infrared radiation. Any device that NASA wants to keep in the cold will also be covered with gold, as radiation – an excellent source of heat. This is where the James Uebba telescope goes - the most powerful cosmic telescope in the world, which is scheduled to launch at the end of this year.
12. Pyrite - the mineral known as fools' gold
The pyrite, or the gold of fools, has fooled many researchers, including Kristofera Newports, one of the founders
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