Chapter 936

The prism refracts the sunlight, so that the polychromatic light will disperse when passing through the prism, and separate the monochromatic light to form seven colors of red, orange, yellow, green, blue, indigo and purple. This is the principle of the prism.

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

Li forgot to worry and didn't want to get into trouble, so he simply attributed physics and chemistry to "nature".

The purpose of making a prism is to intuitively show the composition of light to the teachers and students of the academy and let them understand how the rainbow is formed.

When Li forgets worry to go to school, although he is a learning scum, his favorite is all kinds of experimental classes, whether physics or chemistry, which are his favorite.

Every physics teacher or chemistry teacher made those novel experiments, which opened his eyes.

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

Li forgot to worry and ordered people to close all the other doors and windows of the auditorium, leaving only a sunny window with a small hole to let the sun shine down on the prism.

This is the middle of the 17th century, Newton used a prism to decompose sunlight test process.

This extremely simple experiment is of great significance in later physics. It is known as one of the "ten most beautiful physical experiments".

Under everyone's gaze, after Li forgot to worry about slightly adjusting the angle of the prism, the sunlight beam was refracted by the prism and projected onto the opposite white wall.

Something shocked more than a thousand college teachers and students present

On the white wall, there is a seven color spot of red, orange, yellow, green, blue, indigo and purple!

Xu Jingzong was so frightened that he suddenly got up and said, "seven... Seven colored glow! It's seven colored glow!"

His surprise startled Li.

Colorful glow fart!

Despise this uneducated old bureaucrat!

The teachers and students of other colleges are not much better,

As for the professors and teaching assistants in the college, their reactions are different.

There are those who are surprised, those who are at a loss, and even some people knelt down immediately and began to worship the "miracle" made by Li forgetful

In short, Li's Prism Experiment frightened everyone.

As for the college students, they all stood up and shouted excitedly, but apart from being excited, they were not as fussy as Xu Jingzong.

After all, these six or seven year old Mongolian children do not have as many ideas as adults, and they are also easy to accept new things and knowledge.

This is the reason why Li forgot to worry about the Royal Academy of the Tang Dynasty and only enrolled Mongolian children.

It's always easy to draw on a piece of white paper.

Li forgot to worry. When the crowd had enough noise and gradually calmed down, he began to explain: "Dear students, this is not a miracle. The sunlight is not without color, but is composed of seven colors of light. After the decomposition of the prism, the seven colors are restored. And the rainbow is not a God, but the colorful light formed by the sunlight refracted and reflected by the water droplets in the air after the rain..."

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

The scene in front of us really subverted the three views of everyone.

Li forgot to worry and then threw out a "King's bomb", which made everyone believe it if they didn't believe it.

After the prism test, Li forgot to worry and took everyone out of the Academy auditorium.

The crowd did not know why, so they lined up out of the auditorium.

Li forgot to worry and let the people stand with their backs to the sun. Then the open space in front of them suddenly ejected water mist.

This is the spray device that Li forgot to worry about, and the water bag which was put out by the fire fighting was slightly improved. The purpose is to show the public how the rainbow formed.

A dense column of water was sprayed into the air to form a water mist. Under the sunshine in the afternoon, a gorgeous rainbow appeared in the water mist

"Tianhong, it's really Tianhong! Taoist ancestors are on the top, it's really Tianhong!"

"Grandpa is really a God and man. Even Tianhong can wave his hand!" still others stubbornly believe that all this in front of him was made by Li forgetful with his own immortal method.

For such people, Li forgot to worry about it. He just explained to the students the reasons for the formation of rainbows. Finally, he selected some students and asked them to operate those water bags and spray water mist to make rainbows.

More than a thousand students played like a festival and were almost ecstatic.

Many new college students, even ignoring the constraints of the head teacher, screamed and rushed into the mist, trying to touch the rainbow in front of them with their hands.

In the face of iron facts, Xu Jingzong and others finally admitted that the original so-called Tianhong is such a simple truth.

Xu Jingzong couldn't help sighing: "if you really study heaven and man, you know exactly how the rainbow is formed. Tut Tut, I can't imagine that the sun is seven colors. If I hadn't seen it with my own eyes, I wouldn't dare believe it."

Li forgot to worry and laughed: "ha ha, Xu Gong, that's why I want to teach this encyclopedia. Our understanding of the world is very shallow, so we need more people to study the truth."

He looked at the excited children running around in the fog and said meaningfully, "I don't necessarily want these college students to join Chunwei and become officials. It would be good if more people were willing to explore the mysteries of the world."

Hearing the speech, Xu Jingzong nodded silently and agreed with his words.

Sunlight is seven colors, and the cause of the rainbow is the refraction and reflection of sunlight in the water mist... These things seem useless, but Xu Jingzong also feels an eye opener.

In the future, if anyone tells him that the rainbow is a dragon absorbing water, which is an ominous sign, he Xu Jingzong must spit at the man.

After a simple optical experiment, all professors, teaching assistants and students have a new understanding of Li's course called "Encyclopedia".

After sitting back in the auditorium again, everyone looked at Li forgetful, and their eyes became more and more hot and full of thirst for knowledge.

Li was very satisfied with his first class and worked harder on the podium.

When it comes to happiness, he simply put aside the syllabus he had worked out with Su Changqing, played it freely, and talked wherever he thought.

An encyclopedia is a great success.

Not to mention how the students listened with interest, even the teachers of the Academy were shocked. No one doubts Li's talent and learning and this "Encyclopedia" course.

But Li forgot to worry, but he didn't expect that his first class in the Academy would cause trouble.

He had not been impeached for a long time, and was sued in the court