"Don't worry, the teachers from the academy are teaching." Guan Suo reassured, "Actually, it won't take much time, if we let us do it ourselves, we don't know how long it will take to break such a large iron cable." But let these teachers and students do it, maybe it can be broken in a few breaths. So, even with the addition of their lecture time, it is still much faster than if we did it ourselves. ”

"Hmph, what's the use of those nerds~? Can they break this bucket-thick chain? Or a few breaths in between? General, you're not kidding, are you? ”

The general asked.

"Nerd~ may be useless, but you know the ability of the left chief. They are the disciples of the Zuo Dao Chief, and their skills are all learned from the Zuo Dao Chief. Don't forget, the fire~gunfire~cannons you use are all related to Zuo Daochang, do you dare to say that those firearms are useless? ”

Sekiropeway.

"Of course, this Zuo Dao Chang's ability is very powerful, I don't know how many percent of these guys have learned from Zuo Dao Chang's ability."

Zuo Ci has now become a golden signboard of the Han Dynasty, and he is the ancestor of many disciplines, as long as he is mentioned, no one dares to have any disrespect.

"Hmph, let's wait and see."

Guan Suo didn't say much to him, and quietly formed a circle of teachers and students after saying this.

The group of teachers and students lectured for a quarter of an hour before they began to work on their on-site chemistry practice.

At the teacher's command, four students brought over two buckets, which were sealed and did not know what they contained, and one student brought an empty wooden basin.

The two barrels were quickly opened, one containing some silver powder and the other containing some rust-colored powder.

The teacher asked the students to pour both buckets of powder into the large wooden basin and then asked them to find a way to mix the two powders.

The students giggled around and stirred the two powders.

There were only two wooden spoons at the scene, which were grabbed by two classmates, who vigorously stirred the powder in the wooden basin with the wooden spoons.

There were also two or three students who didn't have tools, so they simply rolled up their sleeves and stirred with their hands.

Although this wooden basin is large, there is no place for five or six students around, and other students can't intervene if they want to help.

Soon, the two or three students who were stirring with their hands cried out bitterly because their hands were rubbed painfully.

The grinding equipment of this era is not strong enough, and it is not easy to grind these two metals into powder, so the powder has a lot of metal particles left, and these fine particles grind their hands to redness and pain.

When the other students saw that they had stopped, they pulled them up, and two or three people squatted down and continued to mix the two powders with their hands.

The reason why they are not even afraid of their hands being ground is because that silver powder is a very rare metal, and they all want to feel this rare metal with their own hands~

That's right, that shiny silver metal is aluminum powder, and that rust-colored powder is really rust, that is, iron oxide.

The mixture of these two things is thermite, and the preferred solution offered by the Institute of Chemistry is the thermite solution.

The addition of thermite to the warheads of armor-piercing bullets in later generations can instantly melt even the armor of Tan~g, not to mention a mere iron cable.

No matter how thick the iron cable is, as long as the dose of thermite is sufficient, it will definitely burn off.

Liu Hou had accidentally obtained a small amount of aluminum before, and demonstrated it to Zuo Cici as a thermite agent, and he was very fascinated by this magical thing that could instantly melt metal, so he spent a long time studying this thing.

Rust is easy to find, but the key to thermite is aluminum.

With the technical conditions of the Three Kingdoms period, the refining of aluminum was very difficult.

After a long period of research, he finally refined some aluminum, and it happened to be the matter of iron cables, so he sent one of his disciples, that is, the teacher, to rush to Guan Suojun with some students to test the effect of thermite on the spot.

Of course, in order to avoid failure, they also prepared another backup plan, which is the aqua regia plan.

Once the thermite test failed, they corroded the iron rope with aqua regia, a mixture of concentrated hydrochloric acid and concentrated nitric acid.

Aqua regia was also an experiment carried out under Liu Hou's Jianyì, which was to use different acids mixed together in different proportions to dissolve gold and silver.

Liu Hou remembered that aqua regia was a mixture of hydrochloric acid and nitric acid, but he did not remember the ratio of the two.

So I had to tell Sù Zuoci the concept, and asked him to find someone to mix the two acids in different proportions by permutations and combinations, and then test the effect of the mixture in different proportions.

Now the experiment has achieved very good results, the mixed aqua regia can easily dissolve gold, silver and mercury, and there is no suspense in dealing with this iron cable.

Several students took turns to fight, and soon mixed the two powders, and then, under the command of the teacher, four able-bodied students lifted the large wooden basin and poured the powder on the iron cable, which was large enough to bury a small section of the iron cable under the powder.

Next, the teacher took out a small porcelain bottle and poured some white powder, which is potassium chlorate, which acts as an oxidizing agent, on top of the pile of thermite powder, which releases oxygen at high temperatures to help burn.

Before that was done, he took out another small porcelain vase, and poured some black powder on top of the white powder.

The generals of the 10th Division who surrounded them only felt that what they were doing was very mysterious, silver, brown, white, black, and powder of various colors took turns to play, as if by magic.

The so-called layman, insider, the soldiers of the 10th Division do not have such advanced knowledge of chemistry, they don't know what kind of miraculous chemical agents these are, they just think that the colorful evil is good/br>In fact, there are not many people in the world who know the principle of chemistry this time, only Zuo Ci Liu Hou and the teachers and students of a chemical research institute, this thing can be regarded as the most cutting-edge technology of this era.

Those students have just been explained by the teacher, and they are very clear about the chemical principle of this real yàn, and they can recognize it at a glance, and those black powders are fire~medicine.

When these pyro~ornates burn, high temperatures are generated, which ignite the thermite.

Finally, the teacher inserted a fuse, then stood up and said, "Who's going to light the fire?" ”

"Me!"

"I'm coming!"

"Let's do it!"

Almost all of the students raised their hands and volunteered.

Aluminum and potassium chlorate as an oxidizing agent cannot be refined by traditional methods for the time being, and with the deepening of the research of electricity in recent years, a sub-discipline, or interdish, has gradually developed into a sub-discipline, or interdisciplinary, called electrochemistry.

Aluminum and potassium chlorate are obtained by electrolysis, this method is indeed a sophisticated technology in this era, and in the eyes of ordinary people, it is estimated that it is no different from the fairy magic method.

These two substances are also extremely rare, and it can be said that except for the few samples left in the Institute of Chemistry, there is no trace in the world.

Now that such a rare substance can be used to make a reality, every student feels very honored and excited, and it is reasonable for everyone to rush to light the fire.

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