Yang Fan arranged all the affairs in the Beijing camp and gave them a holiday. After having a big meal with Zhang Shize and other friends, he also took a carriage back to the new city.
Rich or not, he went home to celebrate the New Year. Naturally, Yang Fan refused to celebrate the New Year in the capital.
There are people taking care of the mansion here in the capital, and there are various stewards to handle all kinds of business. He doesn't need to worry about it.
Xinghe Supermarket was at its peak business period last year, and there were crowds of people every day. There were so many people coming here to buy New Year goods, and they opened the door at nine in the morning and were busy until they closed at eleven in the middle of the night.
The biggest sales volume before the Spring Festival is fat meat, cooking oil, flour, vegetables and corn. It can be seen that although there are almost no unemployed people in Beijing this year and income has generally increased, food expenditure still accounts for a large part of the income.
part.
Before leaving, Yang Fan went to the supermarket for a walk. There were too many people and it was too crowded. He hurried out. Yang Fan considered whether to open a branch in Nancheng to alleviate the flow of people.
After returning to Xincheng, he and Chen Xi took the personnel from the Electric Power Research Institute and began to test their research results. Yang Fan was about to go on an expedition after the holidays. Yang Fan hoped to develop wireless and wired communications.
Because Yaoguang has already said that as long as low-end products are developed and the problem of availability is solved, high-end products can be delivered. These high-end products are completely practical.
The smaller the technology gap, the less gold it costs to teleport.
In front of you is a primary generator set.
There is really nothing difficult about making a generator. The key difficulty is the insulated enameled wire. As long as you have the insulated enameled wire, wind the coil according to the rules, and then cut the magnetic lines driven by the power to generate electricity.
As for power, you can use hydraulic machinery or steam engines. Nowadays, there are small steam engines that burn heavy oil, and they can generate electricity even in the wild.
"Sir, this generator is made according to the design drawings you gave us. We use a fifty-horsepower reciprocating steam engine for automobiles to drive it, and it can successfully generate electricity," Chen Xi introduced.
"How is the performance of enameled wire?" Yang Fan asked worriedly.
After all, although the product has been manufactured, its reliability is still a big problem. If something goes wrong all the time, it cannot be put into production.
"It is difficult to soften copper wires through annealing, but we have completely mastered this technology, please rest assured," said Zhao Youcai, leader of the wire group.
"The natural tree paint we use for the insulation layer is very durable and has good insulation effect, but the price is a bit high," said Chen Jing, a technician at the wire group.
"Is this the radio station you made?" Yang Fan asked, looking at another set of equipment on the table.
The technical difficulty of radio is not very difficult, and as long as the principles are known, it is completely possible to build it in this era. At least it can still solve the problems that exist.
In 1864, Maxwell proposed Maxwell's equations. He unified "electricity" and "magnetism".
He believed that changing electric fields will excite magnetic fields, and changing magnetic fields will in turn excite electric fields. This changing electric field and magnetic field constitute an electromagnetic field, which propagates in space in the form of transverse waves, which is what we now call electromagnetic waves.
In addition, Maxwell also discovered that the speed of light and the speed of electromagnetic waves are almost the same. Therefore, he predicted that light itself is an electromagnetic wave.
Later, Hertz designed an oscillation circuit that could cause electric sparks to periodically emit between two metal balls. According to Maxwell's theory, as long as there are electric sparks, electromagnetic waves should be emitted.
So, in order to test whether there were electromagnetic waves, he designed a metal ring coil with a gap.
As a result, sparks did appear at the gap, which showed that electromagnetic waves were indeed emitted. This proved Maxwell's theory, and Hertz's experiment became one of the most important scientific experiments in the history of physics.
During the years, several inventors created different types of radio devices: Lodge, Tesla, Popov and Marconi.
Among them, Lodge found inspiration from Hertz's experimental circuit and made an electromagnetic wave receiver that can receive electromagnetic wave signals 800 meters away.
The device in front of me is a replica of Rocky's equipment. However, it is more sophisticated and has a communication distance of more than one thousand meters.
At this time, Yang Fan was looking at this device in his mansion in Xincheng, while there was another device in the government office a thousand meters away.
Next to the simple microphone over there, some researchers were talking. On Yang Fan's side, a tingling electromagnetic noise came from the receiver, mixed with unclear voices.
Chen Xi was a little ashamed. She didn't put much effort into this equipment. Some time ago, she devoted herself to the reciprocating steam engine.
I am in this acousto-optical electromagnetic project team. Although I am officially the team leader, I really don’t contribute much.
"Master, I will solve this noise problem later," Chen Xi said.
Now the reciprocating steam engine can be put down. Just leave it to others to improve, while you focus on the electrical equipment.
"It doesn't matter, you can perfect it slowly, don't be too anxious." Yang Fan comforted.
This thing is obviously very poor in practicality now. However, now that it is built, even if the existing problems are solved, you can go to Yaoguang and send some modern communication equipment over.
No advanced digital equipment is required, old-fashioned analog signal equipment will suffice.
There are many old-fashioned electronic equipment enthusiasts at home and abroad, and there are many who specialize in playing with vacuum tubes. Many manufacturers have been producing various low-end vacuum tubes due to the needs of these large numbers of radio enthusiasts.
Moreover, after the fall of the Soviet Union, a large number of old-fashioned electronic tubes flowed into the society. It is not difficult to assemble some radio stations and communication equipment. These old equipment that have been eliminated for 60 or 70 years will not cost too much gold.
Many things can even be obtained by transporting scrapped equipment, then dismantling the pipes and assembling new equipment here.
This chapter is not finished yet, please click on the next page to continue reading the exciting content! These old-fashioned scrapped electronic equipment are everywhere. There are abandoned underground bases everywhere, and people often find a large number of electronic tubes.
In this era, there is no electromagnetic interference, and a very low-power radio station can achieve nationwide communications.
Now that we have generators, enameled wires, and some scrapped old-fashioned radio stations, we can basically assemble our own communication radio station.
In this way, even if Yang Fan is away on an expedition, he can still contact his subordinates at any time and firmly control his territory.
Although the imperial court is planning to send ten general troops out of the fortress, move to Liaohetao, and form a line with the Chahar people. It starts from Chifeng in the west and ends at the Daling River in Jinzhou in the east to block Jiannu.
But Yang Fan was not confident about their abilities.
People like Dong Lin are all people with high ambitions but low power. Few of them really understand military affairs. According to the original history, in the second year of Chongzhen's reign, the slaves launched a large-scale attack and detoured to Mongolia and invaded the vicinity of Gyeonggi. It was not until the third year of Chongzhen that they were driven out.
Another major event in the second year of Chongzhen was that the emperor launched the Qing army movement.
Chongzhen first went to Jizhen to determine the actual number of soldiers, inventory the army's warehouses and supplies, inventory granaries, and investigate officers' occupation of fields, enslavement of soldiers, etc.
It was in full swing. As a result, there was first a mutiny in Jizhou, then a mutiny in Zunhua Guards. Finally, the Jiannu invaded the pass and the Qing army was forced to stop.
Yang Fan knew that the soldiers of the three governors were quite capable of fighting.
However, Yang Fan didn't dare to count on them. If they conflicted with Jiannu next year and were completely defeated, and Jiannu entered the border as in history, it would be no joke.
Yang Fan's territory is now stuck on the choke point from Zunhua to Jizhou in the west. It must be the focus of Jiannu's attack. His own foundation cannot be ruined.
Therefore, although Yang Fan is far away in the northwest, he must have the ability to command the operations of his lair at any time. He must also be prepared in advance.
Otherwise, if Jiannu really calls, how to deal with it?
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Please remember the domain name of this book: .Novel about Strange People of the Republic of China
