Even if it is a waste product, it is a waste product made according to the design drawing. Zvorikin took out the design drawings and had an in-depth exchange with Li Kangping.

Electronic TV is advanced technology in the current era, but its basic principle is based on the theoretical system that people know.

The photographic object is imaged on the photoelectric target through an optical lens, and the brightness of each part of the photoelectric image is different, so that the resistance value of each part of the photoelectric target is different. The resistance of the target pixel corresponding to the brighter part of the light image is smaller, and the resistance of the target pixel corresponding to the darker part of the light image is larger, so the light image can be converted into an electrical image. This is how photoelectric camera tubes work.

The image signal of the photoelectric camera tube is transmitted to the receiving end to ensure that the transmitter and receiver are completely synchronized, and the same light image as the photographed object can be restored through the electrical/optical conversion of the picture tube.

Based on the above principles, the Zvorikin team spent more than half a year to make the design drawings of the first version of the photoelectric camera tube and picture tube, and manufactured some experimental products according to the drawings. Unfortunately, the test samples were all scrapped.

"So these things—your first version of the photocamera—can't do optical/electrical conversion." Li Kangping carefully examines the design drawings.

"The principle is easy to understand, and mechanical TVs have a similar principle, optical/electrical conversion, and then electrical/optical conversion. However, it is indeed very difficult to design and manufacture photoelectric camera tubes and picture tubes for electronic televisions. I mean, the principle is simple, but it's too hard to implement in engineering. Zvorikin looked frustrated.

"Dr. Zvorikin, don't tell me you were defeated by it so easily."

Li Kangping picked up a pencil and wrote and drew on Zvorykin's blueprints.

"When the cathode is heated to 2000K by the filament, it emits a lot of electrons, and I suggest you add a control gate, you see, it can be designed as a metal cylinder that is sleeved outside the cathode, and we make a small hole in the center of the top of the cylinder, and we make the electrons emitted by the cathode only shoot out of this small hole." Li Kangping drew two L's on the diagram to represent the control gate set outside the cathode.

Dr. Zvorikin is a smart man, he quickly understood what Li Kangping meant, he thought for a while, and asked, "Do you have any suggestions for specific technical parameters?" ”

Li Kangping held a pen and wrote a few numbers on the design drawing: "Actually, I have been concerned about the research and development progress of the electronic TV project, although I only come once or twice a month, but I am very concerned about you." I've done the calculations, and I think that a negative voltage of about 50V can be applied to the control gate, and a positive voltage of about 300V should be applied to the accelerator so that the electrons flying out of the gate hole are accelerated. We make a limiting hole at the top of the acceleration pole, which makes the electron beam flying out of the hole very thin. In order for the electron beam to converge again when it reaches the target surface, we have to focus the electron beam, so we add two more focusing poles 1 and 2 after the acceleration pole. ”

Li Kangping's newly written numbers and newly drawn symbols are combined with the old design drawings, which looks a bit messy.

Zvorikin found a new clue in the seemingly cluttered language of technology? He asked, "What if we made such improvements?" And add an adjustable voltage to it so that the electron beam is just focused on the target surface? So that the purpose of making the image clear? ”

"I don't know if the image is clear? Do we first have to get the image and do these technical improvements? I think I should be able to get the image. In addition, because the voltage applied to the target surface conductive electrode is much lower than that applied to the net electrode? Forming a super-strong uniform deceleration electric field between the target and the grid? The electron beam passes through the grid electrode and decelerates until it reaches the target vertically at a speed close to 0. Let's try, let's try it this way, and see if we can improve it with these techniques? Make an effective photoelectric camera tube. One of the difficulties is the material? The outer side of the photoelectric target is a photoconductive layer, which requires a special material team to research and develop. Dr. Zvorikin, you have over $20,000 left in your budget this year, so use that money to form your materials team. Of course? The budget for the electronic TV project will increase next year, how much? It depends on the phased results you have achieved. ”

"Dr. Li, will we use this version of the new technical solution? to carry out the subsequent research and development work. ”

"Good luck to you."

Li Kangping spent a whole day in Zeus's laboratory, and he didn't just talk to Zvorikin about technical issues? He also communicated with the engineers under Zvorikin one by one.

Li Kangping has been thinking and groping? The most valuable asset of a high-tech enterprise is a high-tech talent? So what's the point of attracting and retaining high-tech talent?

It has been almost two years since the establishment of Zeus Laboratory, and Li Kangping's feeling is that the two most important points to attract American high-tech talents are fame and fortune.

These technical personnel in the United States are relatively self-conscious, and they do not have the concept of "strengthening the United States with science and technology and repaying the United States with science and technology," and they are engaged in scientific and technological work mainly for their own fame and fortune.

Especially in peacetime, with higher salaries and technology projects that could go down in history, you can attract some American tech talent to work for you.

With the exception of Li Kangping and the current nineteen technicians at Zeus Labs, others do not seem to believe that the project can succeed.

The huge success of mechanical television sensation in the United States has not brought enough attention and investment to electronic television, Li Kangping went to Zeus Laboratory for research this time, on the one hand, to provide technical guidance, on the other hand, to stabilize the morale of the military, to inspire confidence.

Moreover, Ah Bing has begun to learn English, his English teacher is a Chinese born in the United States, this Chinese teacher is equivalent to Ah Bing's English tutor, and the teacher comes to Ah Bing's home every day to teach Ah Bing English.

On this day, Li Kangping came to visit Ah Bing.

Although Ah Ping was only eight years old, he knew many Chinese characters and was proficient in reciting parts of the Three Character Sutra, the Hundred Family Names, and the Four Books and Five Classics.

Ah Bing's enlightenment education took place in a private school in China, and the old gentleman in the private school was very strict, and once Ah Bing wrote a wrong word or memorized the wrong scriptures, he would suffer from the old man's board education.

Guangzhou No. 1 Primary School is a new-style school with courses in Chinese language, arithmetic, art, physical education and so on. Ah Bing studied in a primary school in Guangzhou for two years, and developed morally, intellectually, physically, aesthetically, and laborly in an all-round way.

China's new-style schools refer to the Western model, and the American primary school curriculum is almost also English, mathematics, art, physical education, and other subjects.

Li Kangping asked Ah Bing: "When you were studying in a primary school in Guangzhou, which course did you like the most?" ”

Ah Bing replied without thinking: "Arithmetic! ”

"Why?"

"I have the highest score in arithmetic, and I like arithmetic the most."

It seems that the little nephew is a master of mathematics. Li Kangping asked a question: "How much do you get by adding eight and multiplying by seven?" ”

Ah Bing added a little mental arithmetic, and then replied: "Ninety-one!" ”

After some testing, Li Kangping found that Ah Bing did have a good talent for mathematics.

Children with good math scores are smart children, and Li Kangping suggested that Ah Ping hire another math tutor for Ah Bing to consolidate and improve Ah Bing's math level.