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"Wow, it's getting so thick." Even the most calm Ah Jing couldn't help but scream at this time, because he saw that the thin hair on the glass slide had actually become thicker than his arm, and it was not pure black in the lens, but looked a little brown.

"Brother, let me see, I want to see it too." Ah Wei saw that everyone was shouting one by one, and he had been itching for a long time, and now he heard his brother also exclaiming over there, so he couldn't help it even more.

Ah Jing originally wanted to take a good look at what else was surprising about this hair, but his younger brother kept pulling his arm beside him, so that he couldn't settle down at all, so he had to raise his head, "Okay, Ah Wei, then let it be shown to you." ”

"Uh-huh." As soon as Ah Wei heard his brother say that it was okay, he immediately squeezed him aside, and then put his two eyes in front of the two lens tubes, and stared inside, "Ha Luha, brother, you see that hair has now become a big python, but, but, why didn't you see its head?" ”

In Ah Wei's eyes, this hair does look similar to the big python on the "Animal Atlas" that Mr. Song showed them, with neatly arranged cuticles on it, so amazing, it turns out that the hair really looks like this.

"Ah Wei, Ah Wei, you get out of the way, it's time for me to see it."

"No, no, I haven't seen it clearly." Ah Wei is a domineering child, standing there for a long time just not moving, making the people behind wait for anxiety.

"Chief, look at Ah Wei'......" Mei Zi saw that she had urged several times to no avail, so she complained directly to Huangshi. If this was normal, she would definitely pull Ah Wei's ears and carry him aside, but now that the chief, Mr. Song, and Sister Hong'er are standing next to her, she doesn't dare to do this.

"Ah Wei, your time has come, now you have to let the classmates in the back come to see." Huang Shi saw that Ah Wei was still a little reluctant, so he patted him lightly on the shoulder, and then said, "Didn't we all say it before, everyone can only watch it for half a minute, and then we have other better things to watch." ”

After Ah Wei reluctantly left his seat, Meizi snorted at him, and then happily put her head in front of the two eyepieces, and looked at it intently, she had already seen the hair magnified more than 200 times before, it was like a black pencil lead that had become bigger and thicker, and the chief said that it had been magnified to 500 times now, what would it look like.

"Chief, you just said that only those with cuticles are good-looking and healthy, and if the cuticles are destroyed, it is unhealthy, so what will unhealthy hair look like?" Because it is a woman's nature to love beauty, as soon as Hong'er asked a question, even Meiling wanted to see what Huangshi would say.

"What a look!" It makes Huang Shi feel a little difficult to answer, the lifestyle on Dongluo Island is basically green and natural, and their hair maintenance is generally only shampoo, and the damage is not very bad, they have not dyed the color, nor have they done ion perms, so it is still difficult to find a hair with only core fibers left.

But recalling a post he had seen on a forum, Yellowstone said to them, "Let's put it this way, healthy hair, like we just saw, with neatly arranged cuticles. And unhealthy hair, under the 500x magnification effect, you can see that the cuticle is almost non-existent, and the surface of the hair is full of holes, some of which look like dry yellow earth."

"Oh." The two beauty-loving ladies answered, and each thought about whether to wait for the time to come, and cut a piece of hair and put it under the microscope to observe.

……

After the youngest child finished reading it, Huang Shi clapped his hands, "Okay, everyone has seen what hair looks like under the microscope, so I will now introduce to you the instrument structure of this microscope." ”

For Huang Shi, the education methods of these children are definitely different from those of adults, and the logical thinking patterns of those adults have been set, so he can only use awe, kindness, or discipline to make them abide by their own rules and do what they order.

But children are different, their lives have just begun, like a blank sheet of paper, so he has to nurture their interest in science like his own daughters, not only to know what it is, but also to know why it is.

But to cultivate interest, first of all, you have to make them interested in it, the point is to have a sense of it, to feel it, to feel it, you have to be able to be in it, you have to be able to experience it. Therefore, Huang Shi thinks that no matter what kind of interest they want to cultivate, whether it is science or art, or other skills, or other subjects or any career, in short, the first point is to let them have a sense of personal experience.

Now it is clear that this first step has been successfully realized, and seeing these children cheering, they also want to use a microscope to observe the more subtle world of the world, indicating that they have developed a certain interest in science. In fact, these experiences not only aroused the interest of children, but also Hong'er and Ling'er.

Because before noon, Huang Shi was trying to let Meiling take a look at his cold hair, but Hong'er's voice came from outside the door, Hong'er, who had not appeared for two days, made a special trip to come over today, Huang Shi thought to himself that it was good that the two of them did not have any affectionate behavior, otherwise it is estimated that Hong'er would be vinegar again.

When the three of them came back from eating, they found that the microscope in the classroom was already full of children, but although they were very tightly surrounded, none of them rushed forward to move the instrument, only talking about the new magic weapon.

When Huang Shi squeezed in to take a look, the cold hair he had just placed on the stage was already gone, and he didn't know if it flew away on its own, or if it was blown away by the air currents set off by the children around him, so he had to pull out another hair and put it on the slide for them to observe.

Now the children who have finished observing, their faces are full of laughter and happiness, and they are listening to the chief explain to them the structure of this scientific instrument, only to see the chief pointing to the microscope and saying, "The structure of our ordinary optical microscope is mainly divided into three parts, the mechanical part, the illumination part and the optical part. ”

"As for the mechanical part, it is divided into seven items: mirror holder, mirror column, mirror arm, lens tube, objective converter, lens table, and adjuster." Huang Shi said as he pointed to various parts of the microscope.

"This stocky base is the mirror base, and it's used to support the entire microscope."

"This is the mirror column, which is the upright part of the mirror base, which is used to connect the mirror base and the mirror arm. Wow, this curved one, one end is connected to the mirror pillar, and the other end is connected to the lens barrel is the mirror arm, and we can hold it here with our hands when we usually want to hold it. After saying that, Huang Shi also held the mirror arm and lifted the microscope.

Then Huang Shi pointed to the top two black cylinders and said, "This is the lens tube, which is one of the most critical parts of the microscope, and the upper two of it are equipped with eyepieces, which are the places where you just looked with your eyes." ”

"Under the lens barrel is called the objective converter, we can call it the rotator, you also saw earlier, when I convert the multiple, is it just turning it?"

Watching the chief turn the objective several times, the children cried out, "Yes." ”

"Hey, then let's see how many holes there are in it?" After speaking, Huang Shi carefully unscrewed down the two objective lenses above, handed them to Hong'er and asked her to put them away, and then held the base with one hand and the mirror arm with the other, showing a circle to the children around.

The little ones chirped, "Chief, it has four round holes." ”

"By the way, there are four round holes, which can be fitted with 250x, 500x, 1000x, and 2000x objectives, and what we were looking at just now is 250x, and there are 500x, and if we want to look at something smaller than hair, we have to put these two objective lenses on it." After speaking, Huang Shi pointed to the high-powered objective lens in the box.

"This is the mirror table, we generally call it the stage, we use it to put the slide specimen, you see that there is a light hole in the middle, and then there is a propeller for the slide specimen, it has a spring clip on the left side of the propeller, which is used to clamp the slide specimen, and there is a propeller adjustment wheel under the mirror table, which can make the slide specimen move left and right, front and back."

Huang Shi was lazy in front of him, he directly put the cold hair on the light hole, and after waiting for the child to come, he went to the box to find a piece of glass, and sandwiched his newly plucked hair between the slides for observation.

Then he explained to the people present how to use the adjuster, saying that there are two kinds of large and small spirals installed on the mirror column, a large spiral is called the coarse adjuster, which can make the mirror table rise and fall quickly and significantly when moving. The other small spiral weighs the fine adjuster, which can make the mirror table slowly raise and lower when moving.

"Chief, chief, I have a question."

"Chief, I have a question for you." Before Huang Shi could finish speaking, several children raised their hands.

Seeing that they were so interested in new things, Huang Shi was also very happy, he looked at it, chose the most honest child and said, "Okay, Erniu, you talk first." ”

Erniu saw that the chief actually remembered his name, and he was so excited that he couldn't even speak clearly, "Chief, I'...... I...... I ......"

"It's okay, you speak slowly." Seeing that the child's face was swollen and red, Huang Shi hurriedly comforted him.