Why don't you bite medals in this Tokyo Olympic Games? The truth is made up of electronic waste.

In all kinds of sports competitions, there is a classic picture: the medal winner stands on the podium, biting his newly won medal with his teeth and greeting the audience with a happy smile.

This action has almost become a popular style for athletes all over the world.

Why can't this Olympic Games suddenly bite medals?

BOCOG also explained that our medals are made from the extracts of electronic equipment donated by the Japanese, so there is no need to bite them.

What? Those medals that sound tall and seemingly glamorous are actually made of e-waste!

According to the Tokyo Olympic Organizing Committee, during the preparation for this Olympic Games, Japan began to collect waste electronic products all over the country from 20 17.

As a result, about 78,985 tons of small household appliances and 6,265,438+10,000 mobile phones were collected nationwide in two years, totaling nearly 65,438+10,000 tons of discarded electronic products.

Subsequently, about 32 kilograms of gold, about 3,500 kilograms of silver and about 2,200 kilograms of copper were extracted from it.

Then, they are used to make medals for this Olympic Games, that is, gold, silver and bronze.

Does this operation conform to the Olympic norms?

As we all know, the Olympic Games is a grand and important sports competition in the world, attracting worldwide attention.

The International Olympic Committee has strict regulations on the material, identifiability, weight and size of Olympic medals, and the production process standards and requirements are very strict, so it is necessary to ensure the consistency of each medal.

In fact, however, Olympic gold medals are not made of pure gold.

There is a reason for this.

Pure gold is rare in nature, and often contains many associated elements such as silver, copper and iron. The grade of gold in gold mines with general industrial value is 2-3g/ton, and the industrial mining value is above 0.5g/ton.

From a scientific point of view, it is impossible to make 100% pure gold products. Even the 24k gold product with high gold content has an actual gold content of 99.99%.

This is exactly what China said: "No one is perfect without gold".

In addition, due to its softness and high ductility, gold is soft, fragile and easily deformed. Therefore, it is easy to be scratched and scratched, which affects the appearance.

That is, gold jewelry and other products often add metals such as copper and silver to improve their hardness and quality.

Therefore, according to the requirements of the International Olympic Committee, the gold medal is made of pure silver, but it must be plated with not less than 6 grams of pure gold. In other words, the gold medal is made of gold and silver, and the layer wrapped outside is the real gold.

Silver and bronze medals must be made of pure silver and pure copper, respectively.

It is an open secret that electronic products contain precious metals such as gold, silver and copper.

This is to ensure the performance of electronic products.

For example, gold, the chemical symbol is Au.

Very malleable, very malleable. Moreover, gold has high stability and strong corrosion resistance. Therefore, it is an important material used in jewelry, electronics, communications, aerospace and other fields.

Except silver, the chemical symbol is Ag.

Its physical and chemical properties are relatively stable, soft and malleable. Its thermal conductivity and electrical conductivity are the highest among all metals. Therefore, silver is often used to make highly sensitive physical instruments and electronic components. Many contacts in these devices are made of silver, which is reliable and wear-resistant.

Moreover, silver is also widely used in photosensitive materials, such as photographic film, photographic paper, X-ray film, fluorescent information recording film, electron microscope photographic film, printing film and so on.

Copper (Cuprum), the chemical symbol is Cu.

It has soft texture, good ductility and high thermal conductivity.

It can also be composed of a variety of alloys, with excellent mechanical properties and low resistivity.

Low melting point, easy remelting, high durability and long service life. Therefore, the recycling is more convenient and the cost is lower.

Therefore, copper is mostly used in cable, electric power, electronic components, light industry, machinery manufacturing, building materials and other fields.

Therefore, our electronic products and parts of household appliances, such as watches, televisions, washing machines, air conditioners, refrigerators, mobile phones, computers, automobiles and other objects, all contain precious metals such as gold, silver and copper.

With the rapid development of modern science and technology, there are many kinds of electronic products, and more and more electronic waste is produced by human beings.

Instead of letting them be abandoned and polluting the environment, it is better to find ways to turn waste into treasure.

Therefore, recycling electronic waste has gradually become an industry.

This time, BOCOG found another way to extract them and use them as materials for medals. This is unprecedented in the history of the Olympic Games and an innovative move.

So let's take a look at the medals in Tokyo Olympic Games.

The total number of medals in Tokyo Olympic Games and Paralympic Games is about 5,000, a record high in previous Olympic Games. Moreover, the weight of gold and silver medals also set a record for the number of Olympic medals.

Gold, silver and copper have the same diameter, all of which are 85 mm, and their net weights are 556 g, 550 g and 450 g respectively.

The ribbon of the medal is made of recycled textile fiber materials. This also makes them produce less carbon dioxide in the production process, which is conducive to air environmental protection.

In addition, the surface of the ribbon is designed with raised silica gel lines. Touch these pieces of cloth and you will know the categories of gold, silver and bronze medals.

It can be seen that the medals of this Tokyo Olympic Games have made a new breakthrough in materials and are full of environmental protection concepts and elements.

Earlier, yuriko koike, the governor of Kyoto, Japan, said in his speech at the Tokyo Metropolitan Government Building that "in order to make the Tokyo Olympic Games an Olympic Games for all, please cooperate more in the future. Not only that, but also show the world the environmentally developed cities of Tokyo and Japan. "

In other words, the Japanese government is deliberately trying to show the world the image of environmental protection.

Olympic medals are a special and lofty honor, and the material content of medals cannot be low.

For example, the medals of the 2008 Beijing Olympic Games are made of gold and jade, symbolizing dignity and virtue.

Gold medal with white jade, silver medal with sapphire, bronze medal with sapphire, commonly known as gold (silver, copper) inlaid with jade brand, with noble and elegant artistic style.

Then, the medals of this Tokyo Olympic Games are all made of e-waste, will it affect their value?

As I said before, the International Olympic Committee has strict rules in this respect, and we can't cut corners casually.

For example, the gold medal of the Tokyo Olympic Games, the main body is 550 grams of silver, and the outer layer is plated with 6 grams of gold, which meets the standards of the International Olympic Committee.

According to the American Consumer News and Business Channel TV station, its value is about 694.84 euros. At present, it is about RMB 5330.

Considering the cost, the gold medals in recent Olympic Games have adopted the minimum standard of gold plating-6 grams. However, the specifications of the gold medals in this Tokyo Olympic Games are a bit too large, which can be said to be the highest in value.

Of course, the price of gold and silver has been fluctuating, which will also affect the content and value of Olympic medals.

On the other hand, the value of Olympic medals should be priceless, after all, it embodies the sweat and life achievements of athletes.

And Olympic medal winners will get more rewards, such as government rewards and business income.

In addition to medal materials, the environmental protection concept of this Tokyo Olympic Games is also reflected in many aspects.

For example, the bed boards used by athletes to sleep are all made of cardboard and have been spit out.

The Tokyo Olympic Organizing Committee explained: Apart from considering environmental factors, the cardboard bedstead is easy to transport and assemble, and it is not easy for people to get hurt even if they hit it.

These mattresses are made of recyclable polyethylene. After the Olympics, it will be recycled.

Many people may think that using e-waste to make medals and cardboard to make mattresses is a lack of attention to Olympic athletes, which also shows that the Japanese government is stingy and unpretentious.

However, from another perspective, for the host country, an Olympic Games is a short-term activity after all, and it doesn't need to invest too much. Some materials can be recycled after the games, which is an ideal choice.

What's more, protecting the natural environment and ecology has gradually become the consensus of mankind, and waste recycling and environmental protection innovation are also technologies that many countries are vigorously developing.

Therefore, aside from other factors, this environmental protection measure in Japan is an inspiration to us.

# Tokyo Olympics # # Tokyo Olympics medals #