The sound of the explosion startled the surrounding craftsmen, and the ten craftsmen fell to the ground one by one, for fear of being injured by the flames of the explosion. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

The explosion raised the temperature of the compound inside the open cup, and highly toxic gases came out.

Fortunately, the amount of mercury thunderate in the open cup was limited, and the explosion was not large, just splashing glass shards more than a meter away. Even the craftsman who reacted to the operation was not injured.

The toxic gases didn't permeate the lab either. A steam engine-driven exhaust fan is installed above the walls of the laboratory, which continuously pumps the air from the laboratory out of the laboratory. So the poison gas only stayed in the laboratory for a few seconds before it was pumped out of the house by the exhaust fan.

Although there was an explosion, no one was injured.

Li Zhi smiled bitterly, secretly saying that the technology of this bottom fire is not easy to master.

In fact, Li Zhi estimated that the preparation of this thing should not be complicated, after all, mercury thunderate had been made by J. Koonkel in the late 16th and early 17th centuries. In the twenty-first year of Chongzhen, the preparation of mercury thunderate in the West has been basically mature, which shows that the technical difficulty is not great.

But there are clearly some tricks to the preparation of this compound. Li Zhi also wanted to know some methods of preparing mercury thunderate before the crossing, but the relevant information was strictly controlled by the government and was not allowed to be consulted by the private sector at all. So even if Li Zhi is an experienced industrial designer, he doesn't know the specific process.

It was not practical to learn the specific process from Westerners, and at this time, mercury thunderate had not yet been used in the primer of firearms, and the production process was only in the hands of a few naturalists. Li Zhi didn't know where to look for these naturalists, and it was estimated that it would take several years to find them in Europe.

So I can only figure it out on my own.

Although I have long been prepared to take risks, the feeling is still different when I am actually facing danger. The ten craftsmen were frightened by the exploding glass, and their faces were a little frightened, and they looked at Li Zhi in a panic.

Li Zhi said: "Well, everyone has seen the instability of mercury thunderate. This substance is especially easy to explode when heating, so everyone should pay attention to the operation. ”

"In the future, it is not allowed to use hands to operate the glass, and all must be operated remotely with tweezers. The test must also be operated under the exhaust fan to avoid inhaling toxic gases. ”

"But the experiment still has to go on. Everyone used their brains to study why mercury thunderate explodes during the preparation process, and test the safe preparation method. ”

"If the final research is found, everyone will be rewarded with fifty taels of silver."

When the crowd heard the bonus figure of fifty taels of silver, their eyes lit up. This number is enough to buy most of the small villas in Fanjiazhuang. This is enough to make the craftsmen take some risks. They got excited again and began to sweep the floor of glass shards in preparation for the next experiment.

Seeing that the craftsmen were full of energy, Li Zhi nodded and left the laboratory.

####

On the first day of March, Li Zhi instructed construction workers to start building a water system in the palace, which was formerly the Guogong Mansion.

Li Zhi wanted to build the first tap water system of this era.

For Daming, who relies on buckets for water, tap water is too convenient. In the first few months of Li Zhi's travel, the last thing he was used to was that there was no running water. You can endure it without electricity, but you can't bear it without running water. Wash your hands and scoop water in the water tank in the yard. To take a bath, you have to carry a few buckets of water to the bathhouse.

Even now, the people of Fanjiazhuang have several large water tanks, a kitchen, a sink, and a sewer in the yard in the villa, occupying a lot of space in the house.

Even if Li Zhi invented the flush toilet, he improved the hygiene level of the people in the territory. However, the flush toilet still relies on the user to carry the bucket to fill the pool, which is very inconvenient.

The tap water system is in urgent need of introduction.

Later generations of older water systems used galvanized pipes. As an industrial designer, Li Zhi knows that the galvanized layer of this water pipe is actually a kind of decoration. After ten years of use, the galvanized layer inside the steel pipe will definitely fall off. In those houses that are more than 20 years old, the water pipes are cut open and the inside is full of rust.

If the faucet has not been used for a long time, you will find that the tap water is yellow when you unscrew it, and this is because the tap water has dissolved rust.

But in fact, this rust is harmless. For long-term high-frequency use of tap water pipes, the amount of rust contaminated per unit of tap water is very small, and it simply cannot reach the level of health hazards. Therefore, even if the water pipes in later generations were badly rusted, it was never said that they had to be replaced with new ones.

In fact, tap water contains a small amount of ferric oxide, which can also be supplemented with iron.

If the water pipe is not used for a long time, the yellowed rust water is discharged when it is used for the first time, and the water behind it is still drinkable.

Li Zhi can't produce galvanized pipes now, but since rust does not affect the quality of drinking water, Li Zhi directly uses ordinary iron pipes as tap pipes.

The joints of the water pipes would leak, and later they were sealed with raw tape. There was no raw tape in this era, but Li Zhi sealed it with natural resin, and the effect was just as good. The tap water faucet does not require high precision, and Li Zhi can produce it in large quantities in the current machine tool factory.

According to Li Zhi's design, the construction workers dug a large well in the palace and rammed a dragon-tailed car diagonally into the well. After the dragon tail car lifted the well water into the pool on the ground, another dragon tail car set up in this pool and lifted the water to the 15-meter-high water tower.

The water tower is equipped with water pipes, which are buried under the ground and go to bring water from high places to various water sources in the palace. Kitchens, toilets, baths and sinks are equipped with faucets.

The installation of water pipes in the entire palace took a long time, and none of them were not installed well. But it only took one day for the main courtyard of the harem where Li Zhi and Cui He lived to install the water pipes. After a little commissioning, Li Zhi happily used tap water.

As soon as the tap was turned on, the tap water that flowed out scared Cui Yiyi.

Cui He was six months pregnant at this time, and her belly was bulging. Still, she was attracted by the running water coming out of the sink and stood by the sink for a long time.

"Lord, where did this water come from? How does it look like a mountain spring? ”

Li Zhi tightened the faucet, turned off the tap water, then turned on the water again, and said with a smile: "This is not a mountain spring, this is tap water." The water was pressed from the water tower outside. In the future, with this water, we can always get a convenient water source in the room. ”

Cui He stood by the pool and looked at it for a long time, and suddenly said, "This must be using the principle of physical siphoning!" ”

Cui He had nothing to do at home every day, and asked Li Zhi to go to the physics and chemistry textbooks in the Institute of Science and Technology to read, but he immediately guessed the principle of the tap water system.

Li Zhi was stunned, pinched Cui He's face, and said, "The princess is really smart!" ”