Datang: God-level Choice

"You old man, you are the most sinister person right?"

Fang Xuanling glared at Cheng Yaojing angrily and said, "This thing is very useful."

"Indeed, the efficiency of the major projects of our Ministry of Industry is much slower at night or when opening a mountain tunnel. The reason is that the candle is too dim to see clearly. How can we show our strength? If there are such bright lights, the construction speed can be improved a lot.”

Minister of Industry Gao Shilian shook his beard with excitement

Today's major projects in the Tang Dynasty are all hundreds of thousands of migrant workers and more than [-] coolies. It requires people and cannon fodder. Once there is such a new type of light that can be like daytime at night, it can be fully promoted in three classes. With the inverted rotation system, it is difficult to improve the efficiency.

Moreover, major factories, with such bright lights, can also operate night shifts and overtime production when the supply is in short supply, which can increase the production capacity a lot.

And these are all means of rolling wealth.

Today's Minister of Industry Gao Shilian, like Tang Jian, Minister of Household, has become a complete financial fan.

A group of little loli are also happy

For those who love to play, there are not many entertainment activities except listening to Qin Huaidao telling stories at night. If the night can be made like day, then they can play as happy as day and play badminton and table tennis to their heart’s content.

When reading a book and doing homework, I am not afraid to see clearly and hurt my eyes

It's just that everyone gathered together to study for a long time, and tears fell from the eyes, but they still didn't see any mystery, and immediately turned their inquiring eyes to Qin Huaidao.

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Chapter [-]: The unscrupulous old father-in-law is really unreliable

"The new invention this time is called the Eternal Light, also known as the Gas Lamp"

Qin Huaidao smiled and explained to Li Er and others

The invention of the gas lamp was actually an accident

At present, the lanterns used in the Tang Dynasty are mainly placed in the middle of the candle, but the candle is inconvenient to use and the price is relatively expensive, and ordinary people are still reluctant to bear it

Therefore, Qin Huaidao ordered the research institute to develop a night lighting tool that could be used by ordinary people.

In the beginning, under the guidance of Qin Huaidao, the research institute studied kerosene lamps, which are the kerosene lamps used by many people in Qin Huaidao's hometown and rural areas in later generations.

That is to say, it is common in later TV and movies, with a hand-held handle, the upper end of which is like a glass lampshade in the shape of a large gourd. Inside the glass lampshade is a cotton wick like a toad's mouth. can burn bright

A little more refined, there will also be a small knob, you can control the burning speed by adjusting the wick in and out, so as to adjust the brightness of the kerosene lamp, the overall structure is not complicated

Due to the maturity of glass technology, kerosene lamps with this structure are not too difficult for scientific research institutes, and they were quickly produced.

However, in the actual test process, the defects of the kerosene lamp were quickly discovered.

That is, the brightness is not very sufficient, it is inferior to a better candle, and the smell is relatively strong, which is easy to smoke.

The most important thing is that due to the relatively rough refining process of Datang Oil, the current cost of kerosene is still relatively high. Taken together, it may be better to use candles directly.

It is not feasible to directly burn unpurified oil, which contains various harmful impurities.

After receiving the test report submitted by the research institute, Qin Huaidao was also slightly surprised.

But what really made him discover the solution was submitted by another project team of the scientific research institute, about the solution of coal mine gas treatment.

At the same time of large-scale coal mining, gas, a flammable gas, soon entered the research subjects of Datang Research Institute

Compared with kerosene, the extraction of gas is much simpler for today's Datang. Whether it is in natural coal mines or by cooking coal, gas can be easily obtained.

In the Jinyang area not far from Chang'an City, there are coal mines with very rich reserves. The new prairie also has rich coal mine resources, which can be easily transported to the refining plant in Chang'an City for processing by railway.

After trying to recall for a long time, Qin Huaidao also became fragrant. The calcium carbide lamps often used in exploration work in later generations seem to be a kind of gas lamps.

Therefore, Qin Huaidao directly ordered the scientific research institute to replace kerosene with gas and started the research on gas lamps

And this change has brought great joy directly.

That is the brightness of gas lamps, which are much brighter than candles and kerosene lamps.

The brightness of gas lamps can reach the level of 80-watt incandescent lamps. It can be said that the brightness is quite high. Even in the early 20th century, the street lamps on the street were all electric lamps and gas lamps in parallel.

Moreover, due to the lighter gas, the tiles are made smaller, and there are fewer impurities after combustion, and the wind resistance is very strong, which can be very convenient to carry and use when going out.

And the price is still within the acceptable range, so after the initial test was successful, the researchers immediately entered further public relations, and strived to reduce the comprehensive cost again.

This time, what Li Er and others saw was the finished gas lamp of the street lamp version.

It can be said that before the advent of electric lights, this is definitely the brightest and most practical lighting tool.

As for electricity, although Qin Huaidao knew some general principles, he still has a long way to go if he wants to invent and popularize it throughout the Tang Dynasty.

Therefore, in Qin Huaidao's view, gas lamps are currently the most suitable for the actual situation of the Tang Dynasty.

"Eternal light, it really is bright and bright!"

"My son-in-law, look, this palace is a little dark at night. I can't see clearly even if I want to play chess with Guanyin Maid Garden, do you think?"

A smug smile appeared on Li Er's face.

Qin Huaidao shrugged, this unscrupulous old father-in-law, in order to use the gas lamp as soon as possible, did not hesitate to pull out the eldest grandson and pull the flag.

When he went to the palace a few times before, he was still bragging about how exquisite and beautiful the palace lanterns were.

Now when I see this gas light, I instantly become a big pig's hoof. It is really unreliable.

At the beginning of Li Er, the rest of the important officials couldn't sit still.