On April 15, in the Electric Power Laboratory, amidst the admiration of dozens of officials and laboratory researchers, the light bulb placed by Li Zhi turned on.
Li Zhi asked people to close all the curtains, but the room was still very bright. Li Zhi made some estimates and felt that the world's first light bulb had at least 30 watts of power.
Although this brightness is not enough and needs to continue to be improved, it is far beyond the candles and oil lamps of this era.
Li Zhi is an electric light bulb made of tungsten filament.
Tungsten was extracted in 1783. It is an eighteenth-century technology and is not considered high-tech. At that time, the Spaniard de Purya used the carbon oxidation method, which uses carbon and tungsten trioxide to react to obtain tungsten metal.
and carbon dioxide.
Li Zhi also used this method.
But the difficulty of the operation is to obtain pure refined tungsten ore. The first is to find the ore. Li Zhi asked Han Jinxin to search for tungsten ore in Xianglu Mountain, Xiushui County, Jiangxi three years ago. Li Zhi knew that there was a large tungsten ore there because of a light bulb design case before he crossed.
mine.
After knowing the specific address, it is not difficult to find the ore. The trouble is the selection of wolframite ore. After the rough tungsten ore is dug out, it must be crushed, ball milled, and then shaken, re-separated, flotated, and electro-separated. Only then can we obtain
Refined tungsten trioxide is mainly composed of tungsten trioxide. With refined tungsten ore, sodium carbonate must be sintered and decomposed to further remove impurities, so that relatively pure tungsten trioxide can be obtained.
Although Li Zhi had learned some theories about purifying tungsten ore before traveling through time, it was also very difficult to put into practice. Hundreds of researchers from the Electric Power Laboratory spent three years studying this complete set of purification work. Just two machines of various types were built.
There are more than a hundred kinds, costing tens of thousands of taels of silver.
After struggling for three years and summarizing a complete set of chemical theories in practice, Li Zhi obtained relatively pure tungsten trioxide.
After obtaining tungsten trioxide, it is easy to extract tungsten metal, and manufacturing light bulbs is a matter of course.
Seeing the dazzling light emitted by the light bulb, the researchers were all dumbfounded. Although they had been busy in the laboratory for the past three years, they never imagined that following the design of the Tianjin Prince, they could finally produce such a magical light.
.
Some researchers felt that three years of hard work had not been in vain, and they cried with joy and cried in the laboratory.
Everyone looked at the light bulb for a long time, with great joy on their faces.
Cui Changwu, the head of the disciplinary inspection team, took a breath and praised: "Your Highness, this is truly a miracle of poor nature. This is much brighter than an oil lamp!"
Carefully touching the light bulb, Cui Changwu said: "And it's not as hot as a flame, and it won't cause fire disasters like oil lamps."
Cui Changwu even put his nose up to smell it and said with a smile: "Your Majesty Shengming, this light bulb has no smell. It doesn't have a strong smell like the oil lamp. It also emits black smoke and will blacken the walls."
He said: "Nowadays, the factories in Fanjiazhuang and Tianjin Aicheng get off work at night. The roads are dark at night, making it very inconvenient for pedestrians to walk on the roads. The officials on the street are also conscientious and have installed glass-encased tung oil lamps for pedestrians.
But the spark of light from the tung oil lamp illuminates too little."
"This is due to the good public security in Fanjiazhuang and Aicheng, so it only causes inconvenience to workers and female workers, and there is no danger yet. If in other cities, especially in newly merged provinces, it would be very dangerous for female workers to get off work too late."
"But if the light bulb invented by the prince can be installed on the road, the entire road will be brighter. Not only will the workers no longer have to endure the pain of being in the dark, but the safety of female workers will also be greatly improved. They no longer have to worry about encountering robbers.
Even bad guys."
When everyone heard what Cui Changwu said, they all said it was wonderful.
Lu Hu thought for a while and smiled: "General Manager Cui said it very well. But this light bulb uses electricity and needs to be near a generator to shine. How to solve this problem?"
Li Zhi smiled and said: "Although the light bulbs use electricity from the generator, now we can produce insulated wires, so there is no need to put the light bulbs next to the generator."
When everyone heard this, their faces became even more joyful, and they all looked at Li Zhi expectantly.
Li Zhi waved his hand and asked the laboratory's research institute to bring out some pieces of insulated wire.
The insulated wire has a copper core, with a thin copper wire in the middle. The outside of the copper wire is covered with vulcanized rubber.
Rubber has good insulation properties and good thermoplastic properties. It can be easily processed into various shapes after heating, making it an ideal material for wire sheaths.
Li Zhi smiled and said: "With this kind of wire, we can transmit the power generated by the generator to very far away places. I think we only need twenty generators to light up the streets and alleys of Fanjiazhuang."
Twenty generators are driven by twenty steam engines. Just burn some coal or firewood. This cost is much lower than installing all oil lamps in the streets and alleys.
It seems that the electricity cost of this lamp is not high.
Everyone was amazed when they heard Li Zhi's words. They picked up the black vulcanized rubber wire and observed it carefully under the light of the light bulb.
Huan Yihua thought for a while and asked: "Your Majesty, according to your opinion, this light bulb does not use a lot of electricity. Not only can it be used in critical places, but it can also be used in ordinary places?"
As the general manager of the newspaper, Huan Yihua is in great need of lighting tools.
The newspaper office works until very late every day after collecting the news. Then it has to rush to typesetting and printing in the middle of the night, rushing to print the newspaper before dawn. It is very inconvenient to operate flammable newspapers under dim oil lamps. It can be said that the newspaper office
Editors and printers are night owls and are in desperate need of improved lighting tools.
This electric lamp seems to be tailor-made for the newspaper office.
Huan Yihua rubbed his palms and said with a smile: "Can the prince equip newspapers everywhere with these electric lights?"
Li Zhi laughed and said: "Yes, the newspaper office stays up late every day, so of course it needs to be equipped with electric lights."
Huan Yihua's face was filled with joy, and he immediately bowed his arms to the ground and shouted, "Your Majesty, Your Majesty."
Li Zhi smiled and said: "Not only the newspaper offices need to be equipped with electric lights, but our schools also need to be equipped with electric lights. Students read at night until nine o'clock, and relying on oil lamps is too harmful to the eyes. Our school is now nearsighted.
There are more and more eyes, which is not a good thing."
"We need to build large-scale generators everywhere and use wires to transmit power to various key departments. Not only will the roads be lit up, but schools, government offices, newspaper offices, and even the rooms of every household will be lit up."
Putting a light bulb on the table in his hand, Li Zhi said: "With the light bulb, we have conquered the night. From now on, our people will no longer have to live in the dark. From 6 p.m. to 10 p.m.
If you click on these four hours, it will no longer be useless time when you can’t do anything serious.”
All the officials bowed their hands to Li Zhi and shouted: "Your Majesty is a wise man!" 8)
