() Su Xin was still a little disappointed, but after discovering the usefulness of the magnifying glass, he couldn't help but become interested in the remaining long tube.

Su Jinli knew that it was the first time he had seen such a thing, and he would definitely not use it, and he didn't want him to make a fool of himself.

Just pick up the rest of the long tube, pull it apart gently, and then aim the small end at the eyes, and the large end at the outside, and start to focus.

After adjusting the focus, she handed it to Su Xin: "Father, take a look." ”

Su Xin had been staring at her movements, and when she picked up the long tube and pointed it at her eyes, she had already guessed the usefulness of this thing.

But he just guessed what was in the barrel and could be used to look at it.

At this time, there was no kaleidoscope, but what Su Xin guessed was something similar to a kaleidoscope.

So when he took the tube, although he was very curious, he just thought that he could see something strange.

Who knew that when he looked at this, he noticed that the houses in the distance had become very close!

This is his own home and he is very familiar with the nearby buildings.

So when he looked at it, he saw that there was a problem with the distance.

Su Xin jerked off the long barrel, looked at it with the naked eye, and found that the distance was normal again.

Then he picked up the tube and looked at it, and was shocked to find that the distant building had become very close again.

He tried to look at something else, and found it a little blurry.

But he soon remembered Su Jinli's action of turning the long cylinder, so he also tried to turn it.

Sure enough, at this turn, he found that the picture he saw was changing!

After a few attempts, he learned how to focus and quickly got the picture clear.

Su Xin was shocked, he didn't even care about Su Jinli, he ran out directly, and then jumped on the roof in three or two, and continued to look into the distance with the long tube.

After changing directions several times, he jumped off in shock.

His hands clutched the barrel as if it were a rare treasure.

Although Su Jinli had already guessed that the telescope was a treasure for a general like Su Xin who led troops to fight.

But he didn't expect that Su Xin's reaction would be so big.

The lenses of this telescope were polished by herself, although the current tools are rudimentary, but she has the ability and mental power, and the polished lenses are no worse than modern ones.

It's just that there is no coating on it, and it is certainly not comparable to the modern professional telescope.

But even so, such a thing is an absolutely good thing for a general like Su Xin.

Looking at Su Xin's reaction, he knew how much shock this thing brought him.

Su Xin returned to the study and touched the monocular with affection, and it took a long time to think of Su Jinli.

He raised his head suddenly, looked at Su Jinli in shock, and asked in a trembling voice, "Bao'er, is this...... This thing...... You made this thing? ”

Su Jinli didn't want to plagiarize other people's achievements and create an inventor for herself.

So she lied: "Actually, after that fall into the water, I had a very strange dream, and the dream was a very magical place.

There were a lot of strange things there, the pencils I had to burn, the bathtub and the toilet, all of which I saw in my dreams.

It's the same thing, and people there call it a telescope, and there's a kind of binocular, but I haven't made it yet.

I also learned the way to save Liu Feng in a dream, but I never dared to say it. I don't know what that place is, and I'm afraid that if I say it, you'll think I'm evil.

But thinking that those strange things are so easy to use, I wanted to try to see if I could make some of them, and who knew if they would be successful. ”

Speaking of this, she looked at Su Xin with a blank eye: "Daddy, did you say that I am evil?" ”

"Of course not!" Su Xin immediately retorted, "Such a good thing, how can the evil come up with it?" Bao'er, you must have dreamed of immortals! ”

Something like this, probably only an immortal can come up with it, right?

Thinking of this, Su Xin couldn't help but look at the monocular in his hand again.

Then he asked Su Jinli nervously: "Bao'er, how did you make this thing?" Yes...... How much can be done? Is it difficult to make? ”

Su Jinli knew that he must want to use this thing for marching and fighting, so he simply explained: "The principle of this kind of monocular is actually very simple, it can be made with a convex lens and a concave lens, plus this kind of long tube. It's just that the lens is difficult to polish, and it can't be mass-produced for the time being. ”

It's not hard for her to polish these lenses, but she's still limited in the amount she can polish in a day.

And her speed is much faster than that of the current craftsman, and if she is exposed, it will definitely arouse suspicion.

Su Jinli did not intend to expose herself.

She made the telescope just to help Su Xin and surprise Su Xin.

As for the follow-up production, it is better to leave it to the craftsman. Although the current technology is still very general, the grinding tools are also relatively backward.

But she believes that as long as the above needs it, there will be skilled craftsmen who will improve the process and technology.

After all, there were still many capable people in ancient times.

It's just that many people don't have the opportunity to use their whimsical ideas, so there are fewer and fewer inventions.

Now that there is a telescope, as long as Emperor Yong'an knows the benefits of the telescope, this emperor who likes to fight will definitely mobilize skilled craftsmen to let them polish more lenses.

When the time comes, the craftsmen will naturally find ways to improve the process in order to save time and make meritorious contributions.

Su Jinli thought a lot.

The patent law and patent department she proposed to Chu Yan before was to stimulate the whimsical ideas of people all over the world, but the patent department alone was not enough.

There must also be a special research institute to gather those inventive and creative talents, as well as special research topics to guide their research.

And not just thinking out of thin air.

However, this has to be done slowly.

Su Jinli explained the principle of the telescope and took out two more lenses: "It's such a thing, father, please take a look." ”

This is specially prepared by her.

After Su Xin read it, he still felt incredulous.

With just two small lenses and a long tube, you can make a telescope and so on!

He picked up the two lenses, looked at them carefully, and suddenly noticed a problem.

So he hurriedly asked, "Bao'er, this lens ...... Is it made of water jade? ”

Su Jinli nodded: "It is indeed water jade." This time, I just went to find Liu Feng to buy water jade. Who knew that he bought a large amount of water jade of excellent quality, and actually took it to burn the glaze, fortunately, the water jade was not used up when I went, otherwise I would have to find another one. ”

Su Xin: "......"

He had actually checked Liu Feng a long time ago.

Su Jinli took such a person to the Marquis of Wuyang's mansion and wanted to save him. How could he not care?

Before Liu Feng woke up, he checked this person to the bottom.

Hearing Su Jinli's words, he thought of the water jade that Liu Feng had ruined, and suddenly felt itchy hands.