Yang Fan arranged all the affairs of 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, go home to celebrate the New Year. Yang Fan naturally 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 have to worry about it.
Xinghe Supermarket was at its peak business year ago, with crowds of people surging every day. There are so many people coming here to buy New Year's goods. Every day they open the door at nine in the morning and are busy until they close at eleven in the middle of the night.
The biggest sales before the Spring Festival are fat meat, cooking oil, flour, vegetables and corn. It can be seen that although there have been almost no unemployed people in Beijing over the past year, and incomes have generally increased, food expenditures still account for a large part of income.
Before Yang Fan left, he went to the supermarket for a walk. There were too many people and it was extremely crowded. He came out quickly. Yang Fan considered whether to open a branch in Nancheng. Ease 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 will go on an expedition after the festival. Yang Fan hopes to develop wireless and wired communications.
Because Yaoguang has already said that as long as low-end products are produced, the problem of whether or not they have to be solved. You can deliver higher-end products. 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 rudimentary generator set.
There is really nothing difficult about the generator. The key difficulty is the insulated enameled wire. As long as there is insulated enameled wire. Wind the coil according to rules, and then cut the magnetic lines driven by power to generate electricity.
As for power, it can be hydraulic machinery or steam engine. Nowadays, there are small steam engines that burn heavy oil, and they can generate electricity even in the wild.
"Master, this generator is made according to the design drawings you gave us. We use a 50-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, the reliability remains unclear. This is a big problem. There were always problems, but we couldn't put it 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 be done to 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 is an electric spark, 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, indicating 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.
Between 1890 and 1900, several inventors made 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, the production is more sophisticated, and the communication distance can exceed 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.
There are some researchers talking next to the simple microphone over there. On Yang Fan's side, a tingling electromagnetic noise came from the receiver, mixed with unclear voices.
Chen Xi was a little embarrassed because she didn't put much effort into this equipment. Some time ago, she devoted herself to reciprocating steam engines.
I am in this sound, light and 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 first. Just leave it to others to improve it, and focus on the electrical equipment yourself.
"It doesn't matter, you can perfect it slowly, don't be too anxious." Yang Fan comforted.
This thing is obviously of poor practicality now. However, now that it is built, the problem of whether or not is 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 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 society. It is not difficult to assemble some radio stations and communication equipment. These old equipment that have been eliminated for sixty or seventy years will not cost much gold.
Many things can even be obtained in the name of transporting scrapped equipment, then dismantling the pipes and assembling new equipment here.
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 we have generators, enameled wires, and some scrapped old-fashioned radio stations. You can basically assemble your 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. Take firm control of your own territory.
Although the imperial court was 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 Daling River in Jinzhou in the east. Block the establishment of slaves.
But Yang Fan was not confident about their abilities.
People like Dong Lin are all people with high ambitions and low abilities. Not many people 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 through Mongolia to invade the vicinity of Gyeonggi. It was not until the third year of Chongzhen that he was driven out.
Another major event in the second year of Chongzhen was that the emperor launched the Qing army movement.
Chongzhen first took action on Jizhen to determine the actual number of soldiers. Inventory the army's warehouses and supplies. Inventory of granaries, encroachment of fields by officers, enslaving of soldiers, etc.
It was in full swing. As a result, there was first a mutiny in Jizhou and then a mutiny in Zunhuawei. Finally, Jiannu broke into the pass. The Qing army was also 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 next year they conflict with Jiannu and then suffer a total defeat, and Jiannu enters the border as in history, that is no joke.
Yang Fan's territory is now stuck on the choke point from Zunhua west to Jizhou. It must be the focus of the Jiannu attack. You can't ruin your own foundation.
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. And make preparations in advance.
Otherwise, if Jiannu really calls. how to respond.
