Release that Witch Chapter 19: Teaching
The first rain after the winter finally fell, and it took two days.
Roland leaned at his desk and looked at the dim small town outside the window. The rain was whizzed up by the wind, and it was shot on the glass one after another, causing ripples. Under the refraction of the ripple, the small town contour becomes distorted. The extension of the house and the street is bent and deformed, no longer as usual. Due to the lack of effective drainage measures, the stone slab road staggered with water flows across the canine teeth, looking far away, like many rippled creeks.
The mountains and forests in the distance are obscured by water mist, looming like a world on earth.
If such a landscape is put into modern times, it must be a tourist attraction, but nowadays, Roland wants to see the steel-cement jungle. The construction of the city wall had to stop when it rained, which made him a little bit less pleased with the success of stronghold envoy the day before.
"You just said that the air around us is composed of many kinds of gases, is it true?"
The clear voice interrupted the thoughts of Roland, and Anna blinked her beautiful blue eyes and asked.
"cough cough, Miss Anna, you should use honorifics when calling your Highness," Chief Knight reminded.
"Don't be so particular," Roland turned around, "she is my student now." While it was raining, he called two witch and Carter to listen to his class --, and he decided to open Popular science courses. Stonemason Karl did school and inspired him. Even Stonemason can open schools, not to mention his own engineering mechanical dogs. Why is there discrimination? Isn't it because of ignorance? Universal education is the most effective way to promote the development of civilization in any era.
He originally wanted to be called Assistant Minister. However, the other party has been busy with government affairs recently, but declined politely. Somehow, Roland felt that Barov was particularly motivated after the winter, and almost one person provoked Border Town's's daily management.
When I heard new knowledge to learn, Anna immediately became energetic, and my eyes seemed to glow. Nana is very happy to see that she does not need to treat various experimental animals. Carter is holding a pair of idle and idle, so I will come and watch you with a good look.
But not long after the class started, Knight's eyes flickered. Nana is also ignorant, staring at the words nature and science in a daze. Although Anna seemed half-understandable, he still tried to write down everything he heard. Roland had to pause to allow the three to digest for a moment.
For the question of Anna, he nodded with a smile, "Of course, although they look the same."
"My Highness, I don't understand. Since they all look the same, how do you know that they are different gases?" Carter questions this.
"I can show it to you."
Roland knows that if only light is used to tell, most people will be confused by these mysterious and mysterious theories. He decided to use a simple experiment to arouse everyone's interest.
A candle, a glass, a tub, a bowl of clarified lime water --. This is something he prepared in advance. Although the glass at this time is light brown, it is far less transparent than future generations. Still enough. After all, this simple experiment does not require observation of the course of change.
Roland has been done once before. The test results prove that although magic power exists in this world, the rest of the natural rules are still the same as the earth. He let Anna ignite candle, and then stood it in a tub.
"Combustion requires a gas, which is also closely related to all life. If we stop breathing, it will be like this candle. Note," Roland snaps the glass on candle, the flame shakes twice, It soon went out.
"It runs out of air, Your Highness, this is not strange," Chief Knight disapproved, "Of course we will die without air, such as falling into water."
Nana nodded again and again.
"So, do you think there is nothing left in the cup?" Roland asked as he poured lime water into the tub, the waterline quickly flooded the mouth of the cup, and finally stopped at one-half of the cup.
This experiment is so classic that most elementary school teachers like to use it as an initiation experiment for natural interest lessons. Roland still remembers the shock that the teacher's presentation and instructions at the desk brought to him at that time, and he has embarked on a path of no return to science and engineering.
He lifted the cup slightly, only to see a few bubbles burst out of the mouth of the cup and emerge from the water.
Next, the clarified lime water became slightly cloudy, and a little white suspended matter slowly diffused from the mouth of the cup.
"If there is nothing in the cup, we will not see bubbles and water surface changes. This means that the air contains at least two different gases. In fact, candle burns only one part of the air, and the other part , It is impossible to participate in the burning. Although it is as colorless and tasteless as the former, its nature is completely opposite. "
"It seems ... this seems to be the case," Carter thought for a long time before he figured out the relationship between the two, "but what's the use of knowing these?"
"If we can get the former gas, we can make the flame burn longer. Similarly, if we get the latter gas, we can quickly extinguish the flame!" Anna said suddenly.
It is a genius. Roland admires in bottom of heart. Although there is a small error, it can immediately associate with the purification and use of different gas properties. This idea is definitely genius. You must know that she has not received any systematic modern education. The fact that she can quickly think of it is enough to show that her logic ability is beyond ordinary people -- at least far better than her Chief Knight.
"That's right, since humans have learned to use fire, they have been separated from animals, and the origin is only an accident. Perhaps a lightning ignited a tree, or a stone hit a bursting Mars and caused a flame. But if not People have noticed this, and no one has tried to use it. We are still the same as wild animals, "he said." This experiment is to tell you that curiosity and thinking are the driving force of human progress. There are many such potentials in nature. Power, just wait for us to discover and use. "
After saying a few words, Carter is still a dubious look, Nana belongs to that type of unconsciousness, eyes staring straight at Roland. Only Anna lowered his head as if thinking about something.
Well, Roland sighed. Indeed, the idea that is too advanced will not bring shock, it will only make people feel confused. The height of their minds determines the power of their understanding of impossible. Only when the real thing is in front of them will they know how amazing the power hidden in nature is.
At this time, the kettle hanging on the mantel sounded, it was the sound of steam hitting the lid.
"Ah, the water is boiling, "Knight walked over to take out the kettle with a fork, and the sound stopped quickly. He wrapped the handle with a rag, and filled the water in the people's glasses with a pot.
For example, Roland reached out and held the cup, feeling the temperature from the cup wall. From the first day the fire was used, its principles have matured. "Boil water" has been witnessed and practiced by countless people, but it has never been expected that this softly rising water vapor can also contain amazing energy.
This motive force, which will not be grasped by humans until hundreds of years, has changed human history in a very short time. Although the principle is simple, it is limited to technical issues and is not the first choice for most people to farm. But he is different, he thought, there are witch in this world. Using magic power to kill and fight is just the idea of a barbarian ... It is the correct way to use magic power to create and replace some of the key processes that curb the civilization process.
After chatting about the sun setting, and having dinner with everyone, Roland returned to his bedroom.
There is no nightlife at all in this era. Without making people, everyone would sleep earlier. He also considered whether to use the prince's privileges to recruit a maid to exercise, but in the end he was too thin-skinned to say.
As soon as the room candle was lit, he heard several claps of hands behind him, and then someone said, "It's a special lecture. I didn't expect that the four His Highness the Princes were scholars." >
It's a strange woman's voice. The cold sweat of Roland came out instantly, and strangers who could appear in their room without being aware of the ghosts, besides assassins! ? He pulled his leg and rushed towards the door. Before he could put his hand on the doorknob, a cold wind passed through his ears instantly. When he returned to God, a dagger with a silver handle was firmly inserted into the door panel, and the dagger was only one finger wide from his cheek.