Chapter 4326 Chapter 4328 [Telescope]
Li Xiuning then took it over and tried it, and was also stunned by the effect of the telescope.
"This object can see things in the distance so clearly. If used on the battlefield, wouldn't it be able to detect the enemy early and see through the enemy's reality?" She immediately thought of the key role of this object.
This telescope can clearly see things several miles away, so it can discover the military situation and the enemy's movements earlier, and plan and prepare earlier.
It is said that soldiers are valuable and quick. As long as you have the upper hand, you can often defeat the weak with the strong, use the fast to defeat the slow, and win the war. Therefore, this thing is not just a toy, but a powerful weapon on the battlefield.
"Kou Zhong, what kind of magic is this?" Song Yuzhi asked curiously.
"This is not magic, it is the study of things to gain knowledge." Xiang Nan waved his hand and said with a smile, "These two lenses are convex lenses, polished with transparent crystal.
When light hits a convex lens, the light is refracted and converges at a point. When it passes through another convex lens, the light will be refracted again, and when it enters the human eye, it will allow people to see distant things. "
Li Xiuning and Song Yuzhi looked at each other in shock and didn't understand at all.
Seeing this, Xiang Nan asked someone to take a pen and paper and made a schematic diagram of the telescope.
"The refractive index of light in different objects is different. For example, when we look at fish in the water, they are swimming there, but when we want to catch them, we have to touch underneath the fish before we can catch them." Xiang Nan explained, "It's because the refractive index of water is greater than that of air."
"That's it." Li Xiuning and Song Yuzhi both nodded.
Both of them have caught fish before, and they also know that when catching fish, they have to go deeper to catch fish.
It's just that although they know this, they don't know the reason behind it. After Xiang Nan said this, they finally realized.
"The refractive index of light in crystal is different from that in air. Coupled with the refraction of convex lenses, the changes in light are even greater." Xiang Nan explained, "You see, suppose that light rays are incident in parallel and pass through a convex lens. After refraction, the light will become like this. After being refracted by the second convex lens, the light will become like this. In this way, the distance becomes closer. "
"Kou Zhong, you are truly a genius and extremely smart. It's amazing that you were able to find out such a thing." Li Xiuning and Song Yuzhi both praised.
Everyone knows that you have to go deep to catch fish, but no one has explored the principle. They just take it for granted. Unexpectedly, Xiang Nan not only found out the principle, but also made a telescope based on it.
Such intelligence and talent are truly amazing. He is indeed worthy of being taught by gods. He is indeed gifted.
"It's just so so." Xiang Nan waved his hand and said with a smile, "I just like to guess things."
…
"Xiu Ning~" At this moment, a familiar man's voice sounded.
Xiang Nan looked back and saw that it was Chai Shao.
But I saw that although he greeted Li Xiuning with a smile, his eyes were fixed on Xiang Nan, looking wary.
"Chai Shao~" Li Xiuning nodded and pointed to Xiang Nan next to him, "You still remember Kou Zhong, right?"
"How could I not remember?" Chai Shao nodded and smiled, "After seeing each other for several months, Young Master Kou is still so simple. It's really admirable~"
Seeing that Xiang Nan was still wearing linen instead of silk, he knew that Xiang Nan was still a poor boy, so his face was filled with contempt.
"Master Chai still likes to judge people by their appearance." Xiang Nan also smiled and said,
"Chai Shao~" Li Xiuning stopped him, not wanting Chai Shao and Xiang Nan to continue bickering.
"Ah, by the way, Xiuning, I heard that the emperor has decreed to levy heavy taxes on you to replenish the national treasury?" Chai Shao asked. "Yes, the imperial court is afraid that our Li clan will grow bigger, so it makes us pay heavy taxes." Li Xiuning nodded, "But now there is war and war, and the people are in dire straits. It's too late for the people on our side, Li clan, to guard the herds, so how can we bear to increase taxes on the people. For the current plan, we can only reduce the size of the soldiers and their pay, hoping that we can unite and overcome the difficulties together. "
"In this way, the emperor has money to expand his army, hoard food and grass, and reduce the power of various factions. It is really a plan to kill two birds with one stone." Xiang Nan nodded.
"Yes, deserters have appeared in our Lord Li's camp, and my father and brother are worried about this matter." Li Xiuning nodded.
It is said that when a soldier eats food, he eats food and becomes a soldier. In ancient wars, in order to boost the morale of soldiers and enable them to fight to the death, pay was also needed.
In addition, military rations, ordnance, war horses, fodder, chariots...everything also requires money. That's why there is a saying that "wars are worth money."
"Don't be afraid, Xiuning, our Chai family has provided this money." Upon seeing this, Chai Shao said immediately.
"Is it true, Chai Shao?" Li Xiuning was shocked when he heard this.
This time Li Clan has to pay a heavy tax of 300,000 taels of silver. Such a large amount of money is not a small amount.
"How could I lie to you, Xiuning." Chai Shao said immediately.
"How should I repay you..." Li Xiuning was very embarrassed.
"Xiuning, can't you still feel my feelings for you?" Chai Shaoze looked at Li Xiuning affectionately and said.
Li Xiuning was a little embarrassed by his burning gaze, and couldn't help but turn her head to look at Xiang Nan.
Although she knew Chai Shao's feelings for her, she had no romantic feelings for him. Instead, she developed a lot of affection for Xiang Nan.
"Yuzhi, the weather is nice today, let's go out for a walk." Xiang Nan said with a smile, "You must be a little tired of being bored in the Duke's Mansion all day."
"You're right, let's go~" Song Yuzhi nodded and smiled.
Although she is about the same age as Li Xiuning and both come from noble families, their personalities are completely different.
Li Xiuning has been sensible since she was a child and has devoted herself to her family. But Song Yuzhi was different. The Song clan settled in a corner, dominating Lingnan and had no ambition to compete in the Central Plains.
And with the strength and strategy of Song Que, the Heavenly Sword, he is enough to intimidate a party without any difficulty. Because of this, Song Yuzhi has been doted on by his father and cared for by his brother since he was a child, and he has no worries at all.
Therefore, she does not have to worry about the family business and is naturally more in the mood to have fun.
…
At that moment, Xiang Nan and Song Yuzhi left the Duke's Mansion, and then wandered around Taiyuan City.
Xiang Nan had his own ideas for coaxing a lady like Song Yuzhi.
As the saying goes, if she has seen the prosperity of the world, take her to ride the merry-go-round; if she is not experienced in the world, take her to see the prosperity of the world.
As the eldest daughter of the Song Dynasty, Song Yuzhi has naturally seen the prosperity of the world, so to give her something new, he takes her to do the simplest and most romantic things.
Xiang Nan took Song Yuzhi to Jingyue Lake. The two rowed on the boat, chatted and fished, and then had a picnic in the woods by the lake and ate the fish they caught.
It’s both wild and wild, so it’s naturally fun.
Anyway, Song Yuzhi had a great time.