Datang romantic little landlord

Page 858

Li Wangyou also encountered this kind of thing several times after traveling through the Tang Dynasty.

A rainbow appeared over Dingzhou Village after a rain. The beautiful boss was so excited that he dragged Li Wangyou out to see the rainbow, but he heard noises in the village.

The two were astonished, and after some inquiries, they found out the reason.

Regarding this, Li Wangyou and Su Changqing were also very dumbfounded.

He wanted to explain the principle of the rainbow to Lao Cunzheng and the others, but it was really difficult to explain, so he simply let them go.

It was precisely because of that encounter that Li Wangyou chose this topic when he started his lecture on Encyclopedia today, in order to give the students of the academy a popular science on the reasons for the formation of rainbows.

Li Wangyou smiled and said nothing to the question of the assistant teacher of the academy, and directly gestured to Niu Wu.

Niu Wu immediately fetched something and carefully placed it on the podium.

This object is a crystal clear cylinder with a triangular cross section.

Everyone can't understand this thing, but anyone who has studied physics in junior high school knows that the thing Li Wangyou took out is a prism!

For this prism, Li Wangyou spent a lot of money to find a colorless and transparent top-quality crystal, and asked the craftsman who served as the supervisor to polish it by hand.

Because there are no glass products, Li Wangyou also has deep resentment about this.

To this end, he specially spent a lot of money, and asked Cheng Yaojin, Yuchi Jingde and others to help him search around for craftsmen who made colored glaze.

Although he doesn't know how to burn glass, he knows roughly that glass is made of sand, to be precise, it is made of quartz sand.

There is a difference between glass and colored glaze, but in essence, there is no difference between the two.

Liuli is actually glass, to be precise, it is a kind of glass.

It's just that the materials used to make colored glaze are different from glass.

The colored glaze appeared as early as the Spring and Autumn Period and the Warring States Period, and it was obtained from the by-products of bronze casting.

Liuli is also known as five-color stone, which is not easy to produce and is very valuable, even more precious than jade.

There are naturally very few craftsmen who can make colored glaze.

But with Li Wangyou's status, it is not too difficult to find some glass craftsmen.

After these glazed craftsmen signed a contract with the Li Mansion, Li Wangyou threw all the methods he knew how to make glass to the craftsmen, letting them figure it out by themselves.

After all, he doesn't understand this kind of thing at all. He only knows that quartz sand is used for firing, and the purer the quartz sand, the better, and the fired glass is colorless and transparent.

To make glassware, he has only watched TV blowing glass with a long copper pipe. As for how to operate it, I'm sorry.

But Li Wangyou believes that the craftsmen of Datang are not stupid at all. With his sufficient funds and correct ideas, he believes that it will not take long for glass to be born in Datang.

At that time, his Li family will have another cash cow... Hey, too much money is also a kind of pain, and I don't know how to spend it...

Not to mention how Li Wangyou pretended to be coercive in his heart, this prism made of crystal aroused the curiosity of all the teachers and students in the auditorium. They didn't understand how this little thing had anything to do with the color of sunlight that Li Wangyou said just now. relation.

"Students, next is the moment to witness the miracle!"

Li Wangyou signaled Niu Wu to open a window of the auditorium, so that the sunlight could shine on the podium...

936 An Uneducated Old Bureaucrat

The prism refracts the sunlight, makes the polychromatic light dispersed when passing through the prism, and separates the monochromatic light to form seven colored lights of red, orange, yellow, green, blue, indigo, and purple. This is the principle of the prism.

In later generations, the principle of triangular prism belongs to the category of physics, but there is no concept of physics in Datang.

Li Wangyou didn't want to cause trouble, so he simply attributed all physical chemistry to "nature".

The reason why the prism is made is to show the teachers and students of the academy the composition of light in the most intuitive way, so that everyone can understand how the rainbow is formed.

When Li Wangyou was in school, although he was a scumbag, his favorite was all kinds of experimental classes, whether it was physics experiment class or chemistry experiment class, he loved it the most.

Every time the physics teacher or chemistry teacher came up with those novel experiments, it opened his eyes.

Today he will use a small prism to open a new window for the students of Datang Academy to see the world.

Li Wangyou ordered people to close all the other doors and windows of the auditorium, leaving only one window facing the sun, and a small hole was opened in it to let the sunlight shine down on the prism.

This is the experimental process of Newton using a prism to decompose sunlight in the middle of the seventeenth century.

This extremely simple experiment is of great significance in the physics of later generations, and is known as one of the "Ten Most Beautiful Physics Experiments".

Under everyone's gaze, Li Wangyou slightly adjusted the angle of the prism, and the beam of sunlight was refracted by the prism and projected onto the opposite white wall.

Something happened that shocked more than a thousand teachers and students of the academy...

On the white wall, a seven-color spot of red, orange, yellow, green, blue, indigo, and purple suddenly appeared!

Xu Jingzong was so startled that he stood up suddenly, and said in shock: "Seven... seven-colored glow! It's seven-colored glow!"

His sudden surprise made Li Wangyou jump.

Seven-color glow, what a fart!

Despise this uneducated old bureaucrat!

The teachers and students of other academies are not much better.

As for the professors and teaching assistants in the academy, they had different reactions.

Some were surprised, some were at a loss, and some even knelt down immediately and began to worship the "miracle" created by Li Wangyou...

In short, Li Wangyou's prism experiment scared everyone.

As for the students of the academy, they all stood up and shouted excitedly, but apart from being excited, they didn't make such a fuss like Xu Jingzong and the others.

After all, these six or seven-year-old children do not have as many ideas in their minds as adults, and they can easily accept new things and knowledge.

This is why Li Wangyou set up the Datang Royal Academy and only recruited Mongolian children.

It's always easier to paint on a blank sheet of paper.

Li Wangyou waited for everyone to be noisy enough, and after they gradually quieted down, he opened his mouth to explain: "Students, this is not a miracle. The sun is not colorless, but its essence is the composite of seven colors of light. After passing through the prism After the decomposition, the seven colors are restored. And the rainbow is not a god, but the colorful light formed by the sunlight being refracted and reflected by the water droplets in the sky after the rain..."

Xu Jingzong and others were skeptical about his explanation, but they didn't know how to refute it when they looked at the colorful light spots projected on the wall.

The scene in front of him really overturned everyone's three views.

Li Wangyou then threw out a "King Bomb", making everyone believe it if they didn't believe it.

After the prism experiment, Li Wangyou took everyone out of the academy auditorium.