After Shen Guifen became the Minister of Industry, the industry of the empire really underwent some changes, just like he said when dealing with Feng Yunshan, he began to vigorously develop industry and commerce, especially advantageous industries.

At this time, the Royal Academy of Sciences also came with good news again, and Academician Graham led a group of people to push out the drum electric drive DC generator and the high-frequency alternator he invented himself. At the same time, Graham and Academician Otto, vice president of the Royal Academy of Sciences and an expert on internal combustion engines, worked together to build a small power plant using the internal combustion engine to drive the rotor of a DC generator to generate electricity in the corner of the Royal Academy.

In fact, this is the world's first small thermal power plant, except that this power is not used to produce steam from coal-fired boilers, but directly by burning gasoline in an internal combustion machine.

And Feng Yunshan was overjoyed when he learned the whole news. He didn't expect that in such a short period of time, these academicians of the Royal Academy of Sciences, who did not need to remind themselves, would link the two major inventions of the internal combustion engine and the generator together, although the match was not particularly reasonable, in fact, if Feng Yunshan came to suggest, he would naturally ask for a steam engine as the power to generate electricity, which was the most cost-effective. But in this day and age, it's already a great thing to be able to do this!

He directly ordered that on the basis of the original Imperial Forest Army in the palace, a secret special force was added, which was directly stationed outside the walls of the Royal Academy of Sciences, and was stationed day and night to defend the Royal Academy of Sciences, so as to prevent all spies from destroying or decrypting the secrets of the Royal Academy of Sciences.

At the same time, in the corner of the Royal Academy of Sciences, a steam engine building and boiler room were set up, and coal was burned to generate electricity by using a steam engine to drive the rotation of a drum-type electric DC generator. Although the efficiency of steam engine power generation is very low, it cannot support the steam engine technology to be more mature, and the power of the DC generator driven by it reaches 37 kilowatts, and the power of the other alternator is also 16.5 kilowatts, which is not low in this era.

However, because the transformer and the voltmeter for the test voltage were still in the research stage, the voltage of this alternator was still elusive, so it was not used for the time being, and a DC generator was used to generate electricity.

Moreover, half a month ago, Academician Graham had developed an incandescent light bulb according to the prompt of Emperor Feng Yunshan.

These bulbs, although they have undergone some experiments, but that is Feng Yunshan deliberately asked Gramm to do this, he does not want people to know what material he uses as the filament for the incandescent lamp from the beginning, from the carbonized bamboo wire, steel wire to tantalum wire, to the final tungsten wire, and finally, the tantalum wire was selected as the luminous filament in the bulb, according to the prediction, it can be used directly for more than 5000 hours.

In fact, Feng Yunshan wanted to use tungsten filament directly as a filament at first, but he didn't expect that in this era, although tungsten had been discovered, and a British chemist invented the production method of sodium tungstate, tungstic acid and tungsten metal and applied for a British patent, but in fact it was a mixture of tungsten, and the melting point of tungsten metal was too high and too hard, and it could not be drawn into tungsten wire at all, so he had no choice but to give up and settle for the next best thing, using tantalum wire as a bulb filament.

These tantalum wires are not pure tantalum, and according to the current level of the Royal Academy of Sciences, there is no way to develop pure tantalum. It is only processed with the fusion of niobium-tantalum ore and steel, and becomes a mixture that actually contains less than one-third of tantalum, but because tantalum has good tensile properties, it is easy to manufacture into filament, and although this mixed metal has many impurities, it is rare, so the Royal Academy of Sciences directly uses this material as the final filament.

Of course, these studies are carried out in secret. Feng Yunshan ordered strict secrecy, and all produced light bulbs were numbered with unique numbers to prevent them from being stolen or lost. In fact, even if such a rare material is stolen and analyzed for filament, it will be difficult to steal the trick of making filament for a while.

However, Feng Yunshan knew that tungsten filament was ultimately the best filament material for incandescent bulbs, and he used his identity as the emperor to order to study the method of melting or drawing tungsten metal into filament at any cost, and after all, Feng Yunshan came from later generations, and he directly provided a method to reduce the difficulty of melting, that is, the idea of grinding tungsten metal into powder and then melting it, so that the chemists of the Royal Academy of Sciences could study it.

Now that there is a continuous supply of electricity, these electric lights have also come in handy, and they have been officially put into use, and more than 30 electric lights have been installed in a small building of the entire Royal Academy of Sciences, driven by generators, the electric lights are very bright, and the whole small building is brightly lit, and for a time it has become a heavenly place, and it seems that even the shrill roar of the steam engine, which is a little disgusting, has become moving.

Looking at the light bulbs in the night sky like bright stars, Feng Yunshan laughed loudly. What a familiar light bulb, he seemed to go back to the old days.

And in the past few months, the steel output that Feng Yunshan has been paying attention to has continued to soar on a large scale!

Other small and medium-sized steel mills aside, the output of the few large steel mills that have been put into operation alone has shocked Feng Yunshan.

Krupp Steel Co., Ltd. has a monthly output of 1,500 tons of refined steel, and 1,000 tons of other types of pig iron and wrought iron, and the output has increased a lot compared with before, but because of the restrictions of the Shaozhou iron ore mine next to it, the output has reached a bottleneck.

The empire's largest Maanshan Iron and Steel Company has a monthly output of 3,000 tons of steel and 28,000 tons of pig iron. And that's not all, with the discovery and mining of several large iron ore mines in the Ma'anshan iron ore area, the supply of high-grade iron ore is increasing, and the Ma'anshan Iron and Steel Company will further expand and renovate, and in a few months, the output will more than double.

The first phase of the other Hanyang Iron and Steel Company has also begun to be completed and is ready to be put into production. Although this output is not as large as that of Ma'anshan Iron and Steel Company, it is much larger than that of Krupp Iron and Steel Company's Shaozhou iron mine. In addition, the Wuyang Iron and Steel Plant in Henan, the Zhili Iron and Steel Plant in Luanzhou, etc., these series of extra-large iron and steel smelting plants have also been built and put into operation, the steel output of the Chinese Empire, coupled with the large number of small blast furnaces in the early stage of large-scale steel smelting, although the quality of pig iron smelted is not very good, and there are many impurities, but at least it is much higher than the rich iron ore, and it really makes a batch of pig iron with a lot of output. In succession sent to medium and large steel mills to re-furnace refining, these two months have increased the steel output of the entire empire a lot, the total steel parameters of the Chinese empire soared to 23,000 tons of steel output last month, pig iron output of 300,000 tons, and this month is 26,000 tons of steel output, pig iron output of 320,000 tons. According to this growth rate, the entire steel output of the empire this year can reach 250,000 tons of steel and 3.9 million tons of pig iron! It is directly more than 2 times more than what was expected this year!

In addition, coal mining has also doubled compared with last year, and other cable laying and railway construction, not to mention, are also vigorous and very gratifying.