Chapter 225 Teacher Chen Feng explains the production of gunpowder
Teacher Chen Feng walked into the classroom with steady steps. He stood tall, had sharp eyes, and said in a loud voice: "Students, today we are going to discuss the knowledge of gunpowder and explosives in depth.
In combat, the situation changes rapidly. What should you do if one day you run out of ammunition and food and have nothing when you encounter the enemy?
That’s when knowing how to make crude explosives can be a lifesaver!”
He turned and wrote a series of complex chemical formulas and diagrams on the blackboard, “First, let’s understand the composition of gunpowder.
The most basic ingredients of gunpowder are saltpeter, sulfur and charcoal.
Saltpeter, also known as potassium nitrate, is key to providing oxygen;
Sulfur is flammable;
The charcoal serves as fuel.
Their ratio is crucial. Generally speaking, the classic black powder ratio is 75% saltpeter, 10% sulfur, and 15% charcoal.
But this ratio is not absolute and can be adjusted appropriately according to different needs and conditions.”
"Next, I will introduce several common bombs. For example, TNT is a powerful and stable explosive widely used in military and industrial fields.
Its explosion is so powerful that it can destroy solid buildings and facilities in an instant.
There is also C4 explosive, which is highly plastic, easy to carry and place, and is often used in special operations and blasting missions.
In addition, plastic bombs are also a type of weapon that cannot be underestimated. They are well concealed and difficult to detect.
Next is ammonium nitrate explosive, which is relatively low in cost but also quite powerful.
Finally, there is RDX, which explodes very quickly and is a high-energy explosive. "
Teacher Chen Feng pointed at the contents on the blackboard while explaining, "If you need a stronger explosion power, you can increase the proportion of saltpeter;
If you want it to burn faster, you need to adjust the sulfur and charcoal content.”
"In addition to these conventional bombs, in emergency situations, some common items can also be used to make explosive devices with a certain degree of power.
For example, by tying a small firecracker and a lighter together and connecting them with a wire, you can create the effect of a small explosive.
You can also put gasoline into a glass bottle and add some gunpowder to make a simple Molotov cocktail.
Alternatively, you can collect the gunpowder from firecrackers and put it in a metal tube to create a simple explosive.
In addition, removing the gunpowder from the fireworks and strengthening their sealing can also produce a certain explosive power.
Even mixing some household cleaners can produce flammable and explosive gases that can be used to act like a bomb.
In addition, flour can also be used as a raw material for making explosives under certain conditions. When the flour particles in the air reach a certain concentration, they will explode when they encounter open flames.
Therefore, if the flour is evenly spread in a confined space and the fire source is controlled, an explosion effect with a certain destructive power can be created.
But be aware that this method is very dangerous and should not be attempted unless in extreme circumstances."
Everyone listened attentively, occasionally looking down to take notes.
Su Nian frowned slightly, thinking about every detail of what the teacher said, and quickly recorded the key points with the pen in his hand.
Ye Yao stared at the complicated chemical formulas with wide eyes, and said confidently, "What's so difficult about this? I can definitely remember it easily. It's a piece of cake!"
Zhang Kuang also put away his usual impatience and looked at the blackboard intently.
Zhang Meng raised his hand and asked, "Teacher, if in an emergency, we can't find saltpeter, is there a substitute?"
Teacher Chen Feng nodded approvingly and replied, "That's a good question, Zhang Meng.
Under extreme conditions, similar ingredients can be extracted from certain natural substances, but the effects may be compromised.
For example, it is possible to obtain a certain amount of nitrate from the crystals on the walls of toilets, but the purity and effect cannot be compared with pure saltpeter."
Halfway through the course, Teacher Chen Feng took out some experimental samples to show everyone the characteristics of different types of gunpowder.
"You see, this kind of gunpowder burns fast, but its power is relatively small; while this kind has great power, but is less stable."
Cheng Yi raised his hand and said, "Teacher, how do you judge the stability of gunpowder?"
Teacher Chen Feng patiently explained: "You can judge by observing the color and smell of the gunpowder and performing simple tests. But this requires rich experience and careful operation."
As the course was coming to an end, Teacher Chen Feng assigned homework: "Go back and review today's content carefully. We will conduct practical exercises in the next class."
Everyone left the classroom, discussing today's lessons enthusiastically as they walked.
Su Nian walked leisurely among the crowd, and suddenly stopped, took out a few small bags from her bag, and said, "I made a new aromatherapy, called Southern Dynasty Dream."
Everyone took the small bag curiously, with happy smiles on their faces.
Zhang Kuang couldn't wait to smell it and said excitedly, "This smells really good, Su Nian! The aromatherapy you gave me last time was amazing. After using it, I felt my mental strength became active. I slept very well at night. The next day, I was full of energy and had plenty of energy to do anything!"
Zhang Meng nodded repeatedly and responded: "Yes, I have the same feeling. At first I thought it was my own illusion!"
Cheng Yi smiled and agreed, "No matter what, the aromatherapy made by Su Nian always brings surprises to everyone."
Ye Yao interrupted and said, "Su Nian, you are really amazing. You can always come up with these new and interesting things."
Chu Feng usually has a cool image, but at this moment he was slightly moved and said, "This aromatherapy may help improve learning efficiency."
Su Nian thought secretly in his heart: How could they know that the incense given to them before might have the effect of Horcruxes, which activated their mental power.
But I really don’t feel that there is anything special about what I made this time, it’s just that the craftsmanship is more refined…