"Cough cough! Ink Girl! You're still busy? "
After assuring Sun Simiao that he would deliver the microscope within a month, Li Zexuan left the courtyard. He wanted to go to another courtyard to look for Mo Lingwei, but he was informed by the servants that Mo Lingwei was in the workshop. Li Zexuan had no choice but to leave Yunshan and go to the workshop. He found Mo Lingwei in a small house beside the steel factory.
"Yamachō ~?"
Mo Lingwei raised her head and looked at Li Zexuan in surprise, "Yamachō, you're finally here! In the past month, I've already understood all the principles of the generator! I'm now letting the workshop's craftsmen try to build it! "
"Oh ~?"
Li Zexuan raised his eyebrows in surprise and said happily, "Ink Girl is really talented. You can understand the generator so quickly! Cough cough! But don't worry about the generator. There's something more urgent that needs Ink Girl to do! "
Mo Lingwei frowned in dissatisfaction. She wasn't the kind of person who liked to give up halfway, "Yamachō, what can be more urgent than the generator? According to my estimation, I will be able to build the generator in another half a month. Can you postpone your matter for a while? "
Although this girl was usually fierce and loud in front of Yan Shaoning, she was still quite restrained in front of Li Zexuan. In the end, it was because Li Zexuan was simply too perfect. His knowledge and martial arts were all at the level of a grandmaster. The more she understood Li Zexuan, the more she felt like she was looking up at a mountain! Therefore, she was quite respectful to Li Zexuan, the Yamachō of the academy. After all, the one who was more accomplished was the teacher!
If Yan Shaoning said these words now, Mo Lingwei would definitely explode!
"Half a month! Ink Girl seems to be very confident ~! "
Li Zexuan smiled and said, "But in half a month, the dam won't be built. Even if the generator is built, I'm afraid it won't be useful ~! Also, my matter isn't difficult for Ink Girl. I estimate that it won't take more than half a month ~! "
Mo Lingwei frowned and thought for a while. Finally, she nodded and said, "Alright! Yamachō, what do you want ~? "
Li Zexuan said, "Ink Girl, the academy is about to set up a medical school. I want you to build a microscope for the medical school. The previous telescope was used to see the stars thousands of miles away, but this microscope is used to see the microscopic objects or living things that are invisible to the naked eye!"
Mo Lingwei asked curiously, "Yamachō, isn't this a magnifying glass? I've already made one for Master Liu and the others! Besides, what kind of small things can't be seen with the naked eye? "
Li Zexuan was helpless. The textbooks in the academy included mathematics, physics, chemistry, and geography, but there was no biology. Therefore, not only did Mo Lingwei not know about the concept of microorganisms, none of the teachers and students in the academy knew about it.
The reason why he didn't include biology in the academy's curriculum was because he had his own considerations.
The most basic theory of biology was evolution. If he wrote that humans evolved from monkeys in the book, wouldn't it cause a huge uproar? Would Li Er, who called himself the True Dragon, forgive him? Would the descendants of the Yellow Emperor forgive him?
Darwin proposed the theory of evolution in the 19th century. At that time, the power of the church was greatly weakened. Moreover, the scientific system in the western countries had already been formed. The ideology of tolerance had already been born, and there was a lot of tolerance for a hypothesis. Of course, the most important thing was that Darwin's theory of evolution couldn't be found to attack God. Therefore, the church believed that Darwin didn't oppose God.
In the current Tang Empire, the wisdom of the people hadn't been developed. Everyone still believed that humans were created by Nuwa. It was really not the right time to propose the theory of evolution! Therefore, when Li Zexuan established Yanhuang College, he directly banned the course of biology!
Of course, there were many unreasonable things in doing so, and it wasn't conducive to the development of medicine. Later on, he might release a shortened version of the textbook "Biology", but that was a story for another time!
"Ink Girl! A microscope is not the same as a magnifying glass. Its magnification is higher than a magnifying glass, and it can see things more clearly! As for things that can't be seen with the naked eye, Ink Girl, have you seen rotten meat? "
Li Zexuan pondered for a moment and smiled.
Mo Lingwei was a little confused. She was startled and replied, "Of course I've seen rotten meat. Yamachō, why are you talking about this?"
Li Zexuan smiled and said, "The reason why the meat will rot after a long time is actually because there are very, very small insects in the air that we breathe. Some of these insects eat meat, and they can digest it. Therefore, after a long time, the meat will completely rot!"
When Mo Lingwei heard this, her face suddenly became frightened. She quickly covered her nose and widened her eyes. She said, "Shan … Yamachō, then … then there are many insects that can enter our bodies through our mouths and noses! It's over, it's over, I'm going to become a pile of rotten meat! I'm still young, I don't want to die yet! "
Towards the end, this girl's voice had a hint of sobbing!
Li Zexuan helplessly rolled his eyes and didn't know whether to laugh or cry. He said, "Ahem! Ink Girl, although there are some insects that can enter our bodies through the air, there are many things in our bodies that can kill these insects. Therefore, only dead people's bodies will rot, and living people won't! Ink Girl, don't worry too much! "
Mo Lingwei blinked and put down the slender hand that was covering her nose and mouth. After holding it in for a while, this girl's face was red. She quickly took a few breaths and said angrily, "Phew! You scared me to death! Yamachō, why didn't you finish your sentence? You made me think that I was going to rot! "
Li Zexuan was speechless. He thought to himself, You're the one who was too dramatic. Are you blaming me?
"Okay, Ink Girl, let's get back to the topic. Let me tell you about the structure of a microscope!"
Li Zexuan coughed twice. Then, he saw that there was chalk and a small blackboard in the room. He walked to the blackboard and picked up the chalk. He began to draw as he explained, "The simplest microscope is actually a convex lens. However, this convex lens is a little special. Its curvature is very large, and its focal length is very short. The magnification factor is much larger than a normal convex lens. Of course, this kind of convex lens requires the skills of the lens maker!
What I'm going to tell Ink Girl today is not this kind of single-convex lens magnifier. Instead, it's made up of two convex lenses. One with a long focal length is called the objective lens, and the other with a short focal length is called the eyepiece. The light reflected by the object first passes through the objective lens to form an image. At this time, the object should be between one and two focal lengths of the objective lens, forming an enlarged inverted image. Then, using the first image as the 'object', it passes through the eyepiece to form a second image … "
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