Chapter 781

Hearing this, Wu Ke felt a little strange, so he asked: "last time I saw a magazine, it said that oil painting was identified by carbon 14, and the result has high reference value. Why don't you do an identification, boss?"

Carbon 14, a radioactive isotope of carbon, was first discovered in 1940. It is produced by cosmic rays impacting nitrogen atoms in the air. Its half-life is about 5730 years. The decay mode is beta decay, and the carbon-14 atoms are transformed into nitrogen atoms.

Because the proportion of carbon in various isotopes of nature has always been very stable, and carbon is one of the elements of organic matter, with a half-life of 5730 years, people can estimate the approximate age of an ancient object by inclining to measure its carbon 14 content. This method is called carbon dating. Carbon 141 identification is widely used in Archaeology and identification.

Nan Nan just said with a smile: "it's not that I don't want to do it, but carbon 14 is not in any case. The results are very authoritative. In fact, I found this painting in the dustbin. In this case, even if I use carbon 14 for identification, the results given are of no reference value at all. "

The identification of carbon 14 is limited, because the large amount of carbon produced by artificial nuclear explosion has a great impact on the atmosphere, and since the industrial revolution in the 18th century, the common carbon element C in the atmosphere has greatly increased, which has a great impact on the ratio of carbon. It is internationally recognized that the BP starting point of carbon 14 dating is 1950.

Generally speaking, the identified samples must not be contaminated. If early or late carbon is accidentally mixed in, the measured results will be far from what we want.

Therefore, it is not credible to draw a conclusion without strictly explaining the sampling process. In archaeological excavation, the results of carbon 14 determination are still reference status, not decisive status.

If archaeology is still like this, let's look at calligraphy and painting. Can it meet the requirements of carbon 14 detection?

First of all, what kind of creatures are used in painting and calligraphy? How many years has the finished product been on display? In what way? Is there air convection in the condition of display? Do painters and calligraphers introduce pollution into their use? What kind of biomaterials are used for pigment ink and the above problems?

How to preserve the works after creation? How does mounting affect the work? Are materials of different ages introduced into the mounting process? Is liquid such as water used in mounting process? How to collect and display works? How about the air convection in the collection and exhibition? And so on.

This also makes, even if painting and calligraphy works can use carbon 14 identification, generally can only serve as a dispensable reference value.

In fact, any detection should be based on substances. To detect the age of samples, we must find a substance that is completely linear with the age change. In the field of calligraphy and painting, such markers are difficult to find.

All the substances in calligraphy and painting works are from different starting points and have gone through different spreading pollution to the present. It is difficult to bypass the scientific explanation of the sampling process for the determination of any substance content, not just the determination of carbon 14.

Now that this portrait of a young girl is found in the dustbin, the oil paint on it will be polluted more or less. In this case, carbon 14 will not be able to do it.

After listening to nannancai's explanation, Chu Chen and Wu Kedao understand why nannancai didn't do the identification. But they are even more surprised that the painting was picked up from the dustbin. Is that too much?

Seeing their surprise, Nannan is very proud of his good luck.

He said with a smile: "it's also a coincidence. Last year, when a friend of mine was discharged from hospital, I went to his home to see him. When I left, I was eager to get close, so I walked from an alley to the parking lot and saw this painting in the garbage can in the alley. "

"At that time, I thought it was just a copy. When I went to see it, I found that it was a real oil painting. Besides some dirt on the frame, the effect on the canvas was not great, so I took it back."

After listening to Nan Nan Cai's narration, Chu Chen and Wu Ke finally understand why the frame looks so shabby. But even so, they still think it's incredible who is rich enough to put a thing that may have hundreds of thousands of euros in the dustbin.

Chu Chen has some doubts, this may be Nan Nan just deliberately given the words, the reality is not the case.

"Difficult boss, why don't you change the frame?" Wu Ke frowned and said that she had a little habit of cleanliness. As soon as she heard that the painting came out of the dustbin, she felt a little tired. If it was her, she would not want such a thing.

When Nan Nan heard the words, he understood Wu Ke's idea. He said with a smile, "although the picture frame is old, it's also the original frame of the 19th century. Moreover, I've asked someone to clean it completely. There won't be any problem."

Listen to him say so, Wu can some disapproval, for people who have a habit of cleanliness, this kind of pimple is certainly not easy to eliminate.

Chu Chen doesn't care about it. He is most concerned about one problem. If someone else threw the painting into the dustbin by mistake, what about the ownership? So, he asked, "Mr. Nan, can you guarantee that the original owner didn't throw it away carelessly?"Nan Nan just said with a smile: "in this respect, you can rest assured that I also have contacts in the local police station. If it is lost by mistake, then the original owner can not say that he has never called the police? It has been nearly a year now, and no one has reported the case at all. Moreover, if you agree to the exchange, we can sign a contract. If there is any problem in the future, I will bear all your losses. "

As a matter of fact, Nan Nan likes oil painting better, and he appreciates this painting better. Originally, he didn't want to take out this painting, but he liked Chu Chen's arhat string too much, and Chu Chen's eyesight was very high. He felt that if he didn't take out a heavyweight work, it would be impossible to move Chu Chen's heart.

As Chu Chen said just now, since you can't have both fish and bear's paw, he can only choose what he wants in his heart.

After listening to Nan Nan Cai's words, Chu Chen pondered for a while. In fact, he was not interested in such an imitation if he didn't find it by accident after using his powers while Nan Nan Nan CAI was talking just now. But now he found it by accident, even if there might be disputes in the future, he would take down the painting.

Of course, since Nan Nan said so, the possibility of disputes is very small, and if there is a dispute, he can at most return the painting to others.

"Unexpectedly, I still can't resist the temptation in my heart!"

Chuchen laughed at himself, then said with a smile: "since you are so sincere, boss Nan, what else do I have to object to this matter?"

Nannan just heard the answer she wanted. She couldn't help but laugh like a flower.

However, Chu Chen immediately said, "Mr. Nan, I don't know much about the market value of oil painting. I can't judge the value of your imitative work very well."

Chu Chen's remarks are true. He was not very interested in oil painting. The price of oil painting started from the Athenian School. But in this way, he only had a brief understanding. As for the imitation painting market of famous artists, he did not know much about it.

But Chu Chen has the power to give the price as a reference, Nan Nan just if you want to deceive Chu Chen, it's a big mistake.

Nan Nan just heard Chu Chen say so. He didn't want to deceive Chu Chen. He also called Chu Chen "little fox" because he thought Chu Chen might be using this thing to test him. If he was not satisfied with the price, the business would be yellow.

He said with a smile: "Mr. Chu, you can rest assured that I have been doing business for so many years. I still know the four words of honesty. Besides, if the price is not satisfactory, we can discuss it! Well, the reference price given to me by the appraiser was 450000 euro. Since I got it for nothing, I'll give you some profit. How about 400000 euro

Chu Chen just said that, in fact, it is also a way of bargaining. Between the false and the real, Nan Nan did not dare to offer too much. Of course, things did meet certain expectations. But when he heard the price Nan Nan just offered, he turned away and scolded "unscrupulous businessman".

If the painting is genuine, Nan Nan will add two zeros, which is less. But if the painting is replaced by an imitation, it will be a real jump price. In fact, the price given by the ability is only 300000 euros. If the price given by the ability is exchanged, Nan Nan has to pay Chu Chen.

Of course, the price given by the ability is actually relatively low. In the market transaction, some people's subjective factors must be added. But even if the price increase is added, Chu Chen thinks that the price of the painting in front of him is equal to the value of his three things. What's more, Nan Nan is still the one who asks for people.

As a result, the next two people had a fight without gunpowder. In the end, Nan Nan was defeated. In addition to the painting in front of him, he also gave Chu Chen some discount, which was used on the two porcelains he had just brought and the nine Eye Bead Chu Chen had seen before.

After the completion of the transaction, Nan Nan also breathed a sigh of relief. He was quite satisfied with the result. He did not say what he was satisfied with, but also made a lot of money. What he paid was just an imitation of Leonardo da Vinci.

But Nannan didn't know that it was his seemingly cheap decision that made him lose a chance to make a fortune. If he knew the truth, he would regret even his intestines.