Xia Sun nodded, expressing his deep agreement with his husband's analysis, and immediately asked: "Husband, how can you have so many ghost ideas in your young mind, and they are all good things for the benefit of the country and fame.

In the past, the concubine also felt that the son's "Yebo Jialing" was copied, but now it seems that the concubine doesn't think so, that son really has such family and country feelings in his heart, and he really has such a ability, which is much stronger than when you were young. ”

"Huh! Why did Madame pull me on my head again? ”

"Am I wrong? What would you do when you were young but good at poetry? Is it able to cure diseases and save people, so that the carbuncle is no longer a terminal disease with no cure, or can it open up fertile fields on the high mountains to save the people from fire and water? ”

"This ...... In fact, in addition to my poetry, this is also good, don't you forget? ”

Xia Sun said angrily: "Arithmetic? How do you know that it won't? Maybe it's better than you. ”

Xia Yun smiled proudly: "Hehe, madam, your words are a bit heartfelt!" Although these old men have always been called Wenzong, some people should still remember that the old man's attainments in arithmetic are actually a generation of grandmasters, how can Wu Zheng's hair be compared with his husband......"

In the afternoon of the second day, the master and his old man came back with a wooden box, and saw Wu Zheng sitting in the lobby to treat people, but his old man interrupted Wu Zheng's diagnosis and treatment and let Chai Hu go to the top, and then mysteriously called Wu Zheng to the backyard.

Huang Lao opened the wooden box in his room in the backyard, and Wu Zheng stretched out his head to take a look and found that it was full of straw.

"Master, you old man is ......"

Huang Lao smiled slightly, then reached out and took out a copper pipe from the straw, and there was a guide rail on one side of the copper pipe. And it doesn't look like this craft was made in a hurry at all, where did you always find a master like Master? ”

Huang Lao put all kinds of parts outside in the same way, and said angrily: "What do you care about so much?" For the teacher to ask you, these things can be done? ”

Wu Zheng smiled slightly, and assembled the parts on the table, that Rao's craftsmanship is really good, in this era without calipers, it can actually shrink the error range of all parts to within one millimeter, this kind of craftsmanship Wu Zheng admires from the bottom of his heart.

Talent! But it's a pity that the master doesn't, otherwise it must not be difficult to make a pendulum clock out with this skill, and in that case, wouldn't he be able to make a fortune?

After a while, a microscope with a single objective lens was assembled in Wu Zheng's hands, except that there was no lens, and the others were no different from the microscopes of later generations.

Huang Lao took the assembled microscope in his hand and looked at it again, and then asked, "This is the thing that you can see the worms?" ”

Wu Zheng nodded and said, "That's right, but it's not finished yet." ”

"That's not okay?"

"That's right! The lenses are still missing, and you can try them when you put them on after you have polished them. ”

When Huang Lao heard this, he hurriedly put down the microscope and took it out in his arms, took out a cloth bag, and opened it to see that there were three large convex lenses and two rectangular crystal pieces.

Huang Lao said: "The mirror that has to be ground according to the shape you drew can indeed magnify the things in front of you, but although I don't see the insects you are in. ”

Wu Zheng said with a smile: "As long as these three lenses are installed on this in order." ”

After installing the lenses, Wu Zheng couldn't wait to pick up a crystal piece and drip a drop of water on it, and put it on the light transmission hole to see if the microscope was suitable.

In fact, the power of this lens and the focal length have been calculated before Wu Zheng, but the problem is that although the person who made this microscope is a master, it is inevitable that there will be some errors at the level of this era, and now it depends on whether these errors can be within the adjustable range.

When the objective lens was aimed at the drop of water, Wu Zheng began to rotate the eyepiece to adjust the focal length, because at this time, the lens was still white, and he couldn't see anything except the shadow of his eyelashes.

Finally, with Wu Zheng's unremitting efforts, something in the blister finally appeared in the lens, Wu Zheng knew that this was the microorganism in the water, only because the power error of the lens was too large to make the scene clearer, so it looked like some blisters and black spots and the like.

Huang Lao, who was already waiting for a quick chat, urged impatiently: "Can you do it, you haven't done it for so long?" ”

"There's no way that the power error of the lens is too big, and you can see it faintly, but it's not very clear."

"Really?"

Huang Lao snatched the microscope, looked at it and said, "You are playing with me, I can't see anything in the black and slimy book." ”

Wu Zheng smiled slightly and did not argue, but re-aligned the bronze mirror used for reflection below at the light transmission hole and said, "Try again." ”

Huang Lao Xin looked up again suspiciously, but this time his old body suddenly shook, and then he quickly looked at the drop of water on the crystal piece, the water was very clean and it was the well water he used to grind ink, but looking through this microscope, he could vaguely see that there seemed to be something moving in the water.

"How so? There are really insects in this water, so ...... the water we usually drink."

Wu Zheng said with a smile: "So disciples have always drunk boiled water. Buddhism has a sand and a world, a leaf and a Bodhi, and there are thousands of lives in a drop of water, but no one has ever seen this for hundreds of years, and now congratulations to Master, you have finally proved that this sentence is not the Buddha bragging. ”

Huang Lao suddenly sighed: "One sand and one world, one leaf and one Bodhi." Oh, yes! This sentence has been going on for hundreds of years, and no one has ever thought of researching it, if this thing could have been made earlier, wouldn't the epidemic have been cured long ago. How did you come up with the idea? ”

Wu Zheng smiled: "If I am the old believer of the Buddha and me in my dream?" ”

In fact, Wu Zheng also thought that even if he had a microscope to cure the epidemic, it would be a difficult and long process, and he would not be able to see it in his lifetime.

Huang Lao shook his head, this time he didn't scold Wu Zheng for prevaricating him with lies, he just picked up the microscope and walked out.

"Master, it's going to be dark, you still have to go out? If you really want to go out, you can wait until you have dinner before leaving! You have heard that Senior Brother Chai Hu has already cooked the meal. ”

Huang Lao looked at the microscope in his hand and said, "Before this thing is done, the old man can't eat well and can't sleep, you just now The power of the lenses in this is too big?" ”

"The simple thing is that the curvature of the eyepiece lens is a little thicker, as long as it is smoothed a little more, it should be about the same."

"Okay, the teacher knows."

Seeing that the master was about to go out, Wu Zheng hurriedly stopped him and said, "Master, wait a minute." ”

"Is there anything else to do with you?"

Wu Zheng said: "Actually, the drawings drawn by the disciples at the beginning were all correct, and the reason why they were not ideal should be that the master you invited had a problem with the measurement." Therefore, the disciple wanted to draw something for him, and then discuss the scale with him, so that he would not have to be so troublesome to make things in the future. ”

After Wu Zheng finished drawing a caliper with pen and paper on the table, and then gave him some of his insights on scale, although it was a bit general, but the other party was a master! He should be able to understand his own set of truths from these few words of his own. 166 Reading Network