Three months later, it's June!

In April, the first phase of the Latitude Blockchain Research Institute of Zhonghu University was completed, and half a month later, all the equipment was installed in it.

At the beginning of May, all researchers settled in the Latitude Blockchain Research Institute.

Since the beginning of May, Ye Fei has spent a week at Zhonghu University and the University of Electronic Science and Technology of China, flying back and forth between the two universities every weekend evening.

Ye Fei sighed in his heart: "There is not enough time, I can't wait to have a doppelganger, one in the University of Electronic Science and Technology of China, and the other in Zhonghu University." ”

"So you can take care of both sides."

"It won't be like now, running around on both sides!"

Of course, with such a busy life, the research progress of the two universities is also progressing to a gratifying degree.

Ye Fei is a manager, and he only needs to provide research directions for his researchers.

Most of the work is done by the researchers.

By June, five or six ultra-wideband pulses had been discovered through the Gaussian derivative function.

However, in terms of performance, there is still a big gap with the world's advanced ultra-wideband pulse, which cannot make the network speed reach 100GHz, and is not suitable for Li-Fi.

The application of asymmetric encryption algorithms is very gratifying, half of the research has been completed in just two months, and in another two months, the entire research can be completed.

When the time comes, the asymmetric encryption algorithm will be packaged and a blockchain system with the asymmetric encryption algorithm as the core will be developed.

This part is very simple and can be completed in a month.

By September, the new blockchain system will be ready for global release and trial operation.

University of Electronic Science and Technology of China, in a laboratory!

Ye Feizheng quickly wrote the formula on the paper.

"No, it's still not right!"

Ye Fei had a lot of inspiration in his mind, trying to find the best pulse combination through mathematical methods.

Ye Feixin said: "Use the Gaussian derivative function to obtain the waveform that approximates the radiation masking standard in the whole channel. ”

"The method is right, but the science is like finding a needle in a haystack, and it is very difficult to find the best pulse combination."

Ye Fei's research method is like this, some people are led by Ye Fei to calculate a reasonable formula for Gaussian derivative function.

Some people, through the pulse machine, enter the formula into it and look for the pulse.

Another lab!

Yue Hongqing is a researcher who does research with Ye Fei.

When Ye Fei said that he was completely engaged in domestic independence, Yue Hongqing was the first to stand up and support Ye Fei, and he was also the first person to report to Ye Fei to do research.

Yue Hongqing's image collapsed at the moment, unkempt, pale, with heavy dark circles under his eyes.

He was sitting in front of the pulse machine, and through experiments again and again, he hoped to find the best pulse from many bands.

He's been sitting here for three months, and he's eating in front of the pulse.

Next to the pulse machine, there was an iron single bed, Yue Hongqing would go to bed when he was sleepy, and continue his research after waking up.

In Yue Hongqing's view, only in continuous experiments can the best pulse be found.

Therefore, he used the Gaussian derivative function and the pulse machine to try to find a new ultra-wideband pulse through experiments over and over again.

Yue Hongqing was already very sleepy at the moment, but he still kept his eyes open and didn't let them close.

After a long time, with the sound of "Peng", Yue Hongqing's head smashed on the pulse machine, and just the last number was input into the pulse machine.

He was so sleepy that he couldn't hold on physically.

At this time, an abnormal pulse waveform was suddenly displayed on the pulse machine, which was instantly captured by the supercomputer in the background.

More than four hours later, Yue Hongqing woke up in a daze.

When he looked up at the pulse, he was stunned for a moment, then his eyes widened in surprise.

"New ultra-wideband pulses?"

He excitedly and quickly tapped the keyboard.

Then, he said excitedly: "I see, I said that I haven't found it for so long!" ”

"Through the Gaussian derivative function, we can really find new ultra-wideband pulses, and Professor Ye's method is right."

"It's just that we have all entered a misunderstanding before, we all think that since the Gaussian derivative function is used, the energy density of the pulse must be affected by the pulse length and pulse integration."

"It's not, it's affected by pulse width and pulse differentiation."

"In many cases, it is difficult to meet the radiation masking requirements outside the range of 5.1~20.3GHz with only a single pulse, and it is necessary to use a single pulse waveform with the radiation masking formulated by the FCC to meet them."

"I'm going to tell Professor Ye and everyone else the good news."

After speaking, Yue Hongqing ran out quickly.

Soon, it became noisy outside.

"Prof. Ye, someone has discovered a new ultra-wideband pulse for Li-Fi."

"What?" Ye Fei, who was doing mathematical calculations, raised his head in surprise and looked at the person who spoke: "What you said is true?" ”

"It's true!"

Ye Fei quickly stood up and said, "Let's go, let's take a look." ”

After speaking, Ye Fei walked outside.

Moments later, a crowd gathered around a pulse machine.

A researcher is sitting in front of a pulse, tapping quickly on the keyboard.

For a long time, a set of data is displayed on the computer screen.

The researcher turned his head to look at Ye Fei and said in surprise: "Professor Ye, this set of pulses is very good, and it fully meets the requirements of Li-Fi. ”

"Hmm!" Ye Fei nodded, looked at Yue Hongqing beside him, and said with a smile: "What's your name?" ”

There are thousands of researchers in the research institute, and Ye Fei has only been here for a few months, and it is impossible for him to know the name of everyone.

Yue Hongqing was very excited at the moment, and he said excitedly: "Professor Ye, my name is Yue Hongqing. ”

Ye Fei smiled: "Very good, very good, I will report your affairs to the top." ”

The rest of the people looked at Yue Hongqing with envy, with the strategic significance of the Li-Fi experimental project in Xia Kingdom, as long as this matter was reported, Yue Hongqing would definitely be rewarded from above.

Many people muttered in their hearts: "How come I don't have such luck, how did this Yue Hongqing find a new ultra-wideband pulse for Li-Fi?" ”

Academician Ning's office!

Academician Ning looked at Ye Fei who walked in, and laughed: "Professor Ye, congratulations, I didn't expect to be really found by you to find a new ultra-wideband pulse suitable for Li-Fi." ”

Ye Fei smiled: "Luck, luck, I didn't expect to really find it." ”

"I started by trying to find ultra-wideband pulses using mathematical Gaussian derivatives."

"It was true that we used the Gaussian derivative function to find the UWB pulse, but a researcher mistyped the number and then unexpectedly found a new UWB pulse for Li-Fi."

"Haha......" Academician Ning laughed and said: "Science is like this, sometimes you deliberately look for it, you may not find it, but you don't deliberately look for it, but you find it." ”

"Hmm!" Ye Fei nodded: "That's right, science is really an interesting thing, full of mystery, making people have the desire to explore, and no one knows what will happen in the next second." ”

"Maybe you can discover the technology that will change the world."

"Yes!" Academician Ning nodded: "This is also the reason why many people like to do research, doing research can make people addictive, and its happiness is no less than that of film and television dramas." ”

"Yes!" Ye Fei said with a smile.

Academician Ning said: "Now that you have found a new ultra-wideband pulse suitable for Li-Fi, let's start the next step of research. ”

"Hmm!" Ye Fei nodded and said, "You say!" ”

Academician Ning said: "The next research is how to make Li-Fi popular, and the shortcomings of Li-Fi are very obvious. ”

"1. There must be light!"

"Second, you can't go through the wall!"

"And the light of Li-Fi is visible light, which is also a disadvantage."

"Some people like to turn off the lights and surf the Internet, when there is no visible light."

"Therefore, we need to solve two shortcomings of Li-Fi, one is that there is no visible light, and the other is to let Li-Fi's wireless network penetrate the wall."

"We thought about it before, it can't be visible light, then it's only infrared and ultraviolet."

"But they can't go through walls."

"And there are radio waves, microwaves, X-rays and gamma rays that go through the walls."

"Radio waves and microwaves are invisible light."

"It is not visible light, but it can also pass through walls."

"But their internet speed is too low for Li-Fi, only for Wi-Fi."

"Professor Ye, do you have any good ideas?"

Ye Fei frowned and said: "I don't have a good idea for a while, from the perspective of all electromagnetic waves, only radio waves and microwaves are the most suitable, but only the network speed is too low." ”

Whether it is visible light or invisible light, it is an electromagnetic wave, but the wavelength is different.

"The network speed is high, but it is visible light, and it can't penetrate the wall."

"Two of the ones that can pass through the wall are invisible and have low internet speeds, and two are visible light, but they can't be used to study internet speed."

What cannot be studied for internet speed are X-rays and gamma rays.

X-rays on a person will destroy the body's white blood cells, cause hair loss, abnormal blood circulation, and tissue necrosis.

Gamma rays, also known as Y-rays, are rays released when the energy level of the atomic nucleus jumps and retreats, which has a strong penetrating power and can kill cells, and is medically used to treat tumors.

It also can't shine on the body, otherwise it will kill the cells and cause damage to the body.

If it is a gamma-ray burst, it is the most terrifying thing in the universe, and the energy released in one second is far more than the sum of the energy released by the sun in a lifetime.

Any planet in the universe is swept away and disappears in an instant, and there is not even scum left.

To get back to the point, from all the current electromagnetic waves, only radio waves and microwaves can be transmitted as networks.

But they're too slow.

Ye Feidao: "The invisible light and visible light of electromagnetic waves have their own serious shortcomings. ”

"Yes!" Academician Ning said: "Therefore, we have to find a kind of electromagnetic wave that is fast, invisible light, can also penetrate walls, and is not harmful to the human body." ”

Ye Fei nodded and said, "Yes." ”

Academician Ye Fei and Ning were also very confused and did not know whether this electromagnetic wave existed.

Of course, intellectually speaking, this electromagnetic wave must exist, but it has not yet been discovered.

After all, everything is possible with science.

But intellectually, maybe they can't detect this electromagnetic wave.

Science is all possible, science can be addictive, but science can also make people desperate.

It's like doing a math problem, and you can't do anything about it, and the sense of despair is maddening.

Zhonghu University, Latitude Blockchain Research Institute!

Ye Fei walked into his office and sat down, and then called Shi Yao, the chief scientist of the research institute.

Shi Yao, Chinese New Year's Eve, is a Ph.D. in computer science and mathematics from Kyoto University, mainly researching blockchain.

Just after the graduate school was built, Kyoto University recommended Shi Yao to come over.

After Ye Fei personally tested Shi Yao's ability, he made him the chief scientist of the research institute.

After Shi Yao came in and sat down, Ye Fei asked, "How is the research?" ”

Shi Yao said with a smile: "In one more week, the research on the asymmetric encryption algorithm will be completed, and in a month, the blockchain system with the asymmetric encryption algorithm as the core can be created, and then it can be tested globally." ”

"Hmm!" Ye Fei nodded with satisfaction and said: "It's not a big problem here, you help me keep an eye on it more, I won't be here in the next month, I'll come when the development conference starts." ”

Shi Yao asked, "What?" Have you encountered difficulties in your research at the University of Electronic Science and Technology of China? ”

"Hey......" Ye Fei shook his head and sighed: "I have indeed encountered difficulties, this is the first time I have encountered such a difficult research." ”

Ye Fei's previous research can be solved through mathematics.

But Li-Fi's research cannot be solved by mathematics alone.

Because Li-Fi's research is not 100% related to science, brain holes are more important.

Shi Yao said with interest: "If it's convenient, can you talk to me, I'm a computer student, maybe I can provide you with some help." ”

Ye Fei said: "Okay, talk to you!" ”

"We are now looking for a kind of electromagnetic wave with high network speed, invisible light, and can also penetrate walls, which is harmless to the human body."

"Radio waves and microwaves can pass through walls, and they are invisible light, and they are harmless to the human body, but the Internet speed is too low."

"Infrared, visible and ultraviolet rays, high network speed, harmless to the human body, but not through walls."

"X-rays and gamma rays, which can pass through walls, but are visible light, which is harmful to the human body."

"So, all electromagnetic waves have their own drawbacks."

Shi Yao pondered for a moment and said, "In our computer field, a lot of code also has its own advantages and disadvantages, but we can graft them together, just like different varieties of plants, take out the advantages and remove the disadvantages. ”

"Do you think you can use this method to synthesize multiple electromagnetic waves together?"

Ye Fei frowned and nodded: "This is a good method, but I don't know if it can be successful." ”

"After all, electromagnetic waves are a type of light that cannot be touched, but it is ubiquitous in nature."

"It's not a physical object, if you want to synthesize light together, no one should do it!"

"You'd be wrong." Shi Yao shook his head and said, "Light synthesis was done more than twenty years ago. ”

"Not only light synthesis, but also light conversion."

"The Dalian Institute of Physics used to convert infrared light into sunlight."

Ye Fei said in surprise: "There is such a thing, but I am lonely and unheard, it seems that I need to consult with people in the physics world." ”

Shi Yao smiled: "You usually only focus on mathematics and computer research, and you should also look at the research of physics." ”

"After all, there is no division of mathematical physics, and many mathematicians study physics and can easily get started."

"If you try to study physics, I'm sure you'll be able to pick it up easily."

"I will." Ye Fei said with a smile.

After returning to the University of Electronic Science and Technology of China, Ye Fei found Academician Ning and said, "Academician Ning, I have thought of a way to synthesize a variety of electromagnetic waves. ”

"Photosynthesis?" Academician Ning said: "Yes, we can synthesize electromagnetic waves. ”

"Since every electromagnetic wave has disadvantages, we can take the advantages of multiple electromagnetic waves and synthesize a completely new electromagnetic wave."

"Such electromagnetic waves must have high network speed, invisible light, and can also penetrate walls, which is harmless to the human body."

"Yes!" Ye Fei said: "We are not good at this, I suggest consulting physicists, they are good at this." ”

"Yes!" Academician Ning said: "I know many physicists, and I immediately called to consult them. ”

After speaking, Academician Ning took out his mobile phone and called out.

In the next month, Academician Ning found a number of physicists and consulted them about the synthesis of light.

Ye Fei also benefited a lot, and at the same time developed a strong interest in physics.

"So physics is so interesting!" Ye Feixin said: "If you have the opportunity, you must study physics." ”

Ye Fei discovered that physics is different from mathematics.

Although mathematics is the foundation of physics, physics can make all kinds of technologies.

Almost 90% of everything around modern humans is made physically.

From screws, to airplanes, to satellites.

Ye Feixin said: "Although it is very cool to solve mathematical problems, it is also very cool to create science and technology for the benefit of the world." ”

At this time, in September, the blockchain system created by the Latitude Blockchain Research Institute of Zhonghu University will be released to the world.

(End of chapter)