The two people only stayed in the jewelry store for less than 10 minutes before running away. Picking jewelry also requires some skills, and Qin Hai and Ning Jing undoubtedly lacked such skills.
According to Qin Hai's original idea, it was just a diamond ring. At worst, he would only buy expensive ones, not the right ones. As long as he could make a beautiful woman smile, what did spending a little money mean to the wealthy Chairman Qin?
It is a pity that practice and theory are too far apart. When more than a dozen diamond rings of different grades were placed in front of them, Qin Hai deeply understood what it meant to be dazzled. With the high-end diamond rings, those
Low-end goods are obviously unacceptable to people. But when they set their sights on those diamond rings with titles such as "Queen of India" and "Eye of Africa", they found that the prices of these diamond rings are so high that they are suffocating.
.
Qin Hai was ready to spill some blood, but facing the high price of one million US dollars, he still couldn't convince himself to take action. The annual salary of an ordinary worker in China is only more than a thousand yuan.
A diamond ring is equivalent to a worker's salary of 1,000 years. No matter how prodigal Qin Hai is, he will not be willing to spend so much money to buy a piece of jewelry.
As for Ning Jing, when he saw the price of the diamond ring, his face turned pale with fright. How could he dare to accept the clerk's invitation to try it on? In the end, the two of them could only look embarrassed and find an excuse to run away.
"Giggle..." After running dozens of meters away from the jewelry store, and making sure that no clerk was watching them outside the door, Ning Jing slowed down, held Qin Hai's arm, and laughed.
"Why are you laughing?" Qin Hai was a little embarrassed. As a rich and handsome man who vowed to buy a diamond ring to propose, he was so frightened by the price of the jewelry that he ran away. It was really shameful.
"Qin Hai, you said you are already a big boss with a net worth of tens of billions. Why can't you buy a diamond ring worth 1 million US dollars?" Jing Jing said teasingly. She seemed to have forgotten that she just bought a diamond ring from a jewelry store.
When she escaped, she ran faster than Qin Hai, fearing how much it would cost to take another look.
"Isn't the price too deceiving? I don't see any difference between the diamond called 'Princess Rose' and other diamonds. It's just that the color is more transparent than other diamonds, so why is the price so expensive?
More than ten times?" Qin Hai muttered, "Even if I have money, it doesn't mean that I should be taken advantage of."
Jing Jing retorted: "What do you mean by being taken advantage of? I've been a jeweler for hundreds of years, but I still don't understand the price of jewelry? Do you understand the principle that you get what you pay for? Don't you think that 'Princess Rose' is better than others?"
Are the diamonds good-looking? You can tell by comparing them.”
"You don't really like it, do you?" Qin Hai said seriously, "If you really like it, then let's go back and buy it now. You are right. One million US dollars is indeed not much."
"No, no, no, I'm just joking." Ning Jing quickly denied it. From her heart, of course she likes beautiful diamonds, but asking her to spend $1 million to buy one would be beyond her psychological endurance.
Anyway. After all, she grew up in an ordinary working-class family and received frugal education since she was a child. Even though her family is rich now and her boyfriend Qin Hai is a billionaire, she has not developed a habit of spending money.
habit.
"If I spent 1 million to buy you a diamond ring, Lao Ning would scold me to death if I didn't tell anyone else." Qin Hai found an excuse for his stinginess. But this excuse was indeed true. If he bought it
This diamond ring will definitely make Ning Zhongying furious, and both he and Ning Jing will be scolded by Ning Zhongying. Based on his understanding of Ning Zhongying, he knows that this is definitely not alarmist.
"You Qin Hai, how dare you call my father Lao Ning now?" Ning Jing warned with wide eyes.
"I didn't call him that first. It was your fat brother who called him that in private, okay?" Qin Hai decisively sold Ningmo.
Jing Jing smiled and said: "Speaking of my brother, I remembered how you bought the diamond ring when you accompanied my brother to buy it? Why didn't I hear that you escaped that time?"
"That was in Pujiang." Qin Hai explained, "We went to the best jewelry store. As soon as we went there, we asked the clerk to bring out the best diamond ring. Then the fat man took a look at it and said it was very beautiful and the price was not expensive, and then he
I bought it. The best diamond ring in the store cost more than 170,000 yuan, and the total cost was only more than 30,000 US dollars. I had planned this just now, but who knew diamond rings in Paris were so expensive."
"That store just now also had diamond rings worth more than 30,000 US dollars. Why didn't you buy them?" Jing Jing argued.
Qin Hai shook his head: "Here, more than 30,000 US dollars is the lowest price. If I choose the lowest price to buy, wouldn't I make a fuss?"
"Are you still afraid of losing the conversation?" Ning Jing said with a smile. In her heart, she actually felt a little uncomfortable buying the cheapest diamond ring in a store. After all, a diamond ring is an accessory with special meaning and cannot be left alone.
Talking point.
"Actually, it's not a question of losing the topic, but I think this thing is not worth so much money." Qin Haidao, "In the eyes of a materials expert, isn't the so-called diamond an allotrope of graphite? 1 million US dollars
, how much graphite can I buy? Why don’t we make a graphite ring ourselves?”
The so-called allotropes are substances with different physical properties made of the same element. The chemical composition of diamond and graphite is exactly the same, both are composed of carbon. It is just because of the different arrangement of carbon atoms that one becomes the king of hardness.
Diamond, and the other becomes soft graphite. Qin Hai said that diamond and graphite are the same thing, which is a little cleverness of a materials scientist.
Ning Jing laughed angrily at Qin Hai's idea. She pointed at Qin Hai and said: "You can imagine it, are you planning to cut graphite into thin slices and make it into a ring? People who know it say I wear it.
It’s an allotrope of diamond. People who don’t know it think I’m wearing a thimble.”
The purpose of Qin Hai's nonsense was just to cover up his previous embarrassment. Seeing that Jing Jing's attention had been successfully diverted, he breathed a sigh of relief and said, "Actually, it's not impossible to cut graphite into thin slices. If
If you cut it thin enough..."
At this point, he suddenly stopped and stared at Ning Jing blankly, his eyes widening.
"What's wrong? Is there something on my face?" Ning Jing was confused by Qin Hai's actions. She subconsciously reached out and wiped her face, but there was no dirt on her hands.
"It's not the face, I mean...how did you think of cutting graphite into thin slices?" Qin Hai asked blankly.
"Is there anything wrong with cutting graphite into thin slices?" Jing Jing said strangely, "If you want to make a ring, don't you need thin slices?...Qin Hai, you don't really want to make a graphite ring, do you?"
"Why not?" A strange smile appeared on Qin Hai's face, "If I can cut the graphite very thin, so thin that it is only as thick as one atom, the ring made will be very beautiful and very strong."
"Qin Hai, are you okay?" Ning Jing didn't know what was going on. He pushed Qin Hai and said, "How is it possible to cut graphite that is only one atom thick? You are not talking about carbon nanotubes, are you?"
The so-called carbon nanotube refers to a slender tubular material made of single or multi-layer graphite sheets. Its inner diameter is generally less than 3 nanometers and its length is about 1 micron. This material was used by Japanese scholars in 1991.
It was discovered when observing the graphite electrode product of arc vacuum evaporation with a resolution electron microscope. Subsequently, many scholars invented several preparation methods, making it an important new nanomaterial.
Depending on the diameter and helix angle, carbon nanotubes can exhibit conductive, semiconductive and insulating characteristics respectively, and can be made into molecular-level electronic components. They also have high strength and elasticity, and are very light in weight.
, so it may be used to make lightweight high-strength fibers. Science fiction writers once imagined building an elevator between the earth and the moon to facilitate travel. Some people pointed out that if you want to make such an elevator, the most ideal material is carbon nanotube fiber.
.
There is another very interesting fact about carbon nanotubes, that is, its light absorption ability is extremely strong. Some scientists have used carbon nanotubes to make a material that is said to be able to completely absorb light. In other words, when light shines on this material
There is no reflection at all, so it can be called the darkest material in the world.
Ning Jing was doing superconducting research and had been concerned about new materials such as carbon nanotubes, but she couldn't figure out why Qin Hai would think of such a material inexplicably. Could it be because she said, "Cut graphite into
"Flake"?
Qin Hai gave a negative answer to Ning Jing's guess: "nonono is not a carbon nanotube, but a two-dimensional material. It is a thin film formed by carbon atoms connected to each other. It is as thin as only one carbon atom.
Thick. Think about the performance of such a thin material."
"A thin film material as thick as 1 atom?" Jingjing frowned and thought for a while, then said, "I can't imagine such a material. If it is only 1 atom thick, will this material be very fragile? I doubt it.
Can it exist in reality?"
"A carbon nanotube is 1 atom thick, but it is rolled into a tube. If the carbon nanotube is cut and flattened, wouldn't it be a 1 atom thick sheet? What do you think of the strength of the carbon nanotube?
How?"
Qin Hai smiled and revealed to Jing Jing. In fact, he did not need Jing Jing to give any answer, because he knew the characteristics of the material he described very well. This material was produced in the first dozen or so years of the 21st century.
In recent years, a new type of material has caused a stir in the material science community and even in the economic field:
Graphene! (To be continued, please search Piaotian Literature, the novel will be better and updated faster!
ps: Graphene is here. Did you know that the cover of this book is the atomic structure diagram of graphene? This is a very magical material.