It is said that it is a small power plant, because the power generation equipment is too small compared to the real power plant, but the scene in front of us is enough to shock us for a while.

The equipment for power generation is divided into two groups, and one of these two groups is no longer working at all. The other group was still functioning normally, making a booming sound.

I don't know where to start, because I don't know anything about this set of devices.

The most eye-catching thing is the boiler with two large bells, just like the bell struck in the temple, upside down on the ground, of course, one of which has completely cooled down.

The bell is more than ten meters high, and a large chimney with a diameter of two meters is attached to it, which rises upwards and cannot see the top.

On one side of the bell-like boiler, there are intricate structures, including two cisterns side by side, and the water is left in the cistern through the guò pit wall, which extends over the back wall, and is probably the final destination of the sink we have walked through.

Each cistern is encased in a U-shaped pipe, which is vertical, with two heads extending from the top and low end of the side wall of the cistern, and the two U-shaped pipes are combined together and finally connected to the bell.

Since this U-shaped pipe generates heat, the water in the reservoir produces steam, and there is a thick metal rod above the reservoir, and a thick rod is installed above each reservoir, like a windmill, and the water vapor rises, which can drive this metal rod to rotate.

The metal rod extended outward, through a large brass ring with two legs attached to the ground, and the brass ring had several copper wires on it, leading into the darkness above.

After the copper ring, there are two large copper hands, the arms of the two big hands stretch out from the ground, the wrists of the two hands are close to each other, the palms are sprouting, and the fingertips are stretched upward. In the palm of his hand, he holds a cube block wrapped in copper wire.

Judging from the gap in the copper wire, the block is black, and it should be a large magnet, which is connected to the metal rod in the center and rotates in the palms of two large hands.

Next, the metal rod passed through a copper ring, and there were two big hands, exactly the same structure as before, a total of seven or eight groups.

Eventually, the long metal rod passed through a copper ring and no longer extended.

I probably understood the principle of power generation, that is, the water vapor drives the metal rod to rotate, and then the metal rod is connected to several rotating generators, and the copper wires on the copper ring that are connected to the sky above Yecheng should be to collect electricity. In the darkness above this Yecheng, there must be a complex power grid that supplies power to each puppet separately, as well as to the previous stone elevator, horizontal Ferris wheel, and sarcophagus subway.

The most surprised must be Yan Qiu, she said: "Judging from the production of these metal structures, these things are all manufacturing processes in the Eastern Han Dynasty, can it be said that the people of the Eastern Han Dynasty have mastered this power generation technology?" ”

We didn't think it was strange, I said, "What's impossible, the working people are wise, don't they just generate electricity, what's so strange?" ”

Yan Qiu Zhengse said: "This is different from what you imagined, if as early as the Eastern Han Dynasty, our ancestors would have generated electricity, then this world would be completely different." So Yan Qiu began to talk about the history of the discovery of electricity.

The earliest electrical phenomenon discovered by mankind is the triboelectric phenomenon.

Around 600 B.C., ancient Greece was at the height of its culture, and noble women liked to wear soft silk clothes and amber jewelry when they went out. Amber is a fossilized resin, and when it is pointed at light, it will show a bright yellow or red color, and it was a relatively valuable ornament at that time.

When people go out, they always wipe their amber jewelry clean. However, no matter how clean it is, it will quickly suck up the upper layer of dust. Although many people have noticed this phenomenon, they have not been able to explain it for a while.

There was a Greek named Thales who studied this strange phenomenon. After a long period of observation and reflection, he noticed that the amber pendant hanging around his neck was constantly shaking as the person walked, and frequently rubbing the silk clothes on his body, so he was inspired. After many practices, Thales discovered that amber rubbed with silk did have the ability to attract small and light objects such as dust. So, he called this incomprehensible force "electricity".

In 1660, Curic built the world's first rotating triboelectric generator, but it produced static electricity and had no practical use.

In 1780 the Italian physician Gaffani, through guò began to study the chemical action rather than the electric current produced by static electricity from the reaction of animal tissues to electric currents. He claimed that animal tissues could produce electricity. Although his theories were proven wrong, his practical yàn facilitated the study of electricity.

In 1799, the Italian physicist Volt showed that the current of Gaphani does not come from animals, and that any moist object placed between two different metals will produce an electric current. This discovery helped Volt invent the world's first battery the following year.

In 1821, Faraday, an English physicist, invented the world's first electric motor. Although the installation is rudimentary, it is the ancestor of all the electric motors used in the world today. Although it was a major breakthrough, its practical use was very limited, as there was no other way to power his electric motor than with a rudimentary battery.

In 1831, Faraday discovered that when a magnet passes through a closed line, an electric current is generated in the line, an effect called electromagnetic induction. This was one of Faraday's greatest contributions, as he invented the world's first generator capable of generating a continuous current. Later generators were made according to the same principle of electromagnetic induction.

Since then, mankind has entered the era of electrical application, and various practical electrical appliances have begun to emerge.

In 1879, Edison invented the world's first practical incandescent light bulb. Since Edison's invention of the electric light, power plants have developed rapidly everywhere.

Commissioned in 1882 in the Manhattan area of New York, the Pearl Street Power Plant is known as the world's first power plant, with six 120-kilowatt steam engine generator sets.

The earliest power plant in China, also built in 1882, was set up by the British in the Shanghai Concession, the Shanghai Dianguang Company. At that time, the power plant was designed to supply electricity for electric lighting. That's probably why old Shanghainese call power plants electric light companies.

According to Yanqiu, the first generator was invented in 1831, and the first power plant was built in 1882. That is to say, Cao Cao's generator was a thousand or hundreds of years earlier than other countries in the world. And when people in many other countries were still cave people, we could already enter the age of electrical appliances.

It's a sci-fi blockbuster, and if it goes on like this, we're probably all driving Transformers now, while other countries are still buying private cars.

This news is truly astonishing, but it is a pity that the strange people who have mastered this technology have only used it as a service for the king's tomb.

But how exactly is the heat generated by this boiler? With questions, we approached the hot bell, which was one person tall and had a small window, probably to facilitate the observation of the interior.

Looking through the window, the bell looks like a small crater, in which magma is tumbling and heat is constantly flowing.

Now I completely understood that thermal energy comes from geothermal resources. Cao Cao dug his tomb so deeply, probably in order to find this geothermal heat, so that his power plant could run forever. The power generation unit that has been shut down is estimated to have stopped because the geothermal resources are gone.

I was still puzzled, so I asked Yanqiu: "You say, can this small generator set supply electricity for so many devices?" ”

Sister Hua interjected: "Zhanxiao, this has been a circle, is it stupid for you to go without seeing the sun for a long time?" Who told you that there is such a set of generators here? If you think about it, the construction of this small power plant is conditional, that is, it must be built where there is magma, and where there is magma, it can be built, and maybe there are countless such generators elsewhere. ”

I really didn't think that there might be many such small power plants on this floor, this huge underground park.

After visiting the magical Donghan Power Plant, the problem we faced was still how to get out of here.

It is impossible to get the right way from Accountant Liu's mouth. I said to the people, "Let's find an exit quickly, and the rest will go out and discuss it." ”

Zhao Tiesuo, who doesn't like to talk, actually joined the discussion this time, he came over and patted me on the shoulder and said, "No need to look for it." Then he pointed to the top of the bell and said, "This is the exit." ”