Li Shaoyan took out something wrapped in cloth, looking at the size and thickness like a sword, almost one person tall.

The cloth was removed, revealing something that was transparent throughout, with a triangular shape.

This is not a sword.

The sword has a sharp handle, a blade and a back, and this thing is the same thickness from beginning to end.

Li Shaoyan put this thing in order, and Zong Shu walked over, fiddled with it, and moved the angle towards the sun.

Ah, look! Someone exclaimed.

It was still the white wall, and a rainbow appeared, seven colors, the same size, and neatly arranged.

It is longer and wider than the rainbow made in the basin just now, and it is several times larger overall.

Unlike what you usually see, this rainbow is not curved, but straight.

Like a skilled painter, he uses seven kinds of colored brushes to brush out the drawings with all the precision.

But this one is made of light, and it's a rainbow.

The sunlight is obviously white, but through this transparent equipment, you can conjure up seven colors?

You've never seen anything like it!

In fact, this is the simplest optical experiment.

Newton was the first to discover the seven colors of the sun, using a prism.

A month ago, Zong Shu found Lin Lingsu, drew a drawing, and handed it over to the glass workshop in Mi County to make it.

The production level of the glass workshop has been greatly improved, and the purity of the glass products made is very high.

Zong Shu asked them to make glass, mainly to produce various utensils used in experiments by the Great Song Academy of Sciences and special materials required by Zong Shu.

For example, this prism was not known to be useful at first.

When Zong Shu held the prism to give a lecture to everyone, everyone realized that this toy could decompose white light into seven colors of light.

Su Yi and 14 other students of 100 craftsmen answered the question of how chopsticks are bent in the water, and they have an understanding of light refraction.

Zong Shu gave them a lesson, and immediately felt that what he knew before was really very little.

Compared with Zong Shu, they are frogs at the bottom of the well.

The students were all shocked when they saw that the prism could disperse white light into seven colors.

The students were so shocked that the people here today were even more so.

What's going on here?

It's literally communicating with the gods!

If it weren't for God's care, how could it scatter colorful light?

"Your Majesty, Your Majesty, auspicious, auspicious from the sky!" Cai You shouted excitedly.

Cai You knelt down on the spot, and the other personnel had to kneel down and shout.

These bunches of fools!

This is also auspicious, that is also auspicious, where is so much auspicious?

Even if it's auspicious, it's made by Young Master Ben!

"Your Majesty, that's right, this is Xiangrui, and I am the founder of Xiangrui!" Zong Shu said: "Or, I'll create a bigger auspicious rui for you?" ”

Bigger auspicious? This rainbow is big enough!

Zong Shu clapped his hands, Lin Lingsu, Li Shaoyan and Cao Zongshen acted at the same time, and took out some objects, including two buckets, which everyone knew.

It's the first time I've seen anything else.

Huizong suddenly became interested again, didn't Zong Shumo make something new?

Cao Zongshen filled the two buckets with water, and Lin Lingsu and Li Shaoyan both took out a thick bamboo tube.

The bamboo tube is placed in the bucket, and there is a handle at the back of the bucket. Cao Zongshen helped pull out the handle, and the bamboo tube looked particularly bulky.

Lin Lingsu and Li Shaoyan struggled to hold the two bamboo tubes, and walked to the north and south sides separately, ten zhang apart.

The two of them pushed the handle hard, and several water arrows suddenly erupted from one end of the barrel!

One south and one north, several water arrows crossed and drew arcs in the air.

Someone immediately thought that this was the water gun that children often played.

The water guns played by children are all chiseled with a small eye at one end of the bamboo tube, and the other bamboo is opened and tied with a stick and stuffed with strips of cloth.

As soon as the stick is pumped, the water enters the barrel from the small eye.

As soon as the stick was pushed, water shot out of the barrel.

What Lin Lingsu and Li Shaoyan were operating was an oversized water gun.

It was discovered that the front end of this bamboo tube is white porcelain, which is covered with uniform small eyes, which is equivalent to a watering can for watering flowers.

The reason why it is possible to spray several water arrows evenly at the same time is mainly due to the addition of this part.

At this time, the water arrows in the two directions crossed each other, and some met halfway, and small water droplets were stirred up.

The water mist was also generated, and the faces of the people who were closer to the water arrows were already slightly cool.

"Rainbow, rainbow, rainbow!"

A burst of screams rang out.

Huizong stood up suddenly!

The rainbow has really appeared! This arc that crosses between the south and the north emits seven kinds of colorful light under the sunlight!

It's exactly the same as the real rainbow you've seen before, except that this rainbow is closer, close enough to be touched.

Huizong was excited, walked out, went to the rainbow, waved his hand, and the water droplets dripped onto his body, and he didn't care.

This is the rainbow? Can this be done too?

Zong Shu walked over and said, "Your Majesty, rainbow after the rain." If there are small water droplets in the air, there will be a rainbow. ”

After a while, the rainbow disappeared.

Because, Lin Lingsu and Li Shaoyan finished spraying the water.

In fact, Zong Shu can use the "auspicious rui" that people shouted just now to fool Huizong, and use the "colorful holy light" to prove the "divine right of the monarch".

While deifying the Son of Heaven, he also added a mysterious aura to himself.

But Zong Shu flashed this thought and immediately denied it. If he makes a magic stick at this time, what do Lin Lingsu and Li Shaoyan think?

In order for science to develop and technology to progress, it is necessary to establish the concept of respecting science from top to bottom and form a scientific atmosphere.

If you use scientific things to put on a mysterious cloak for yourself, it is a typical misguided person and country.

If that is the case, the scientific concept that he advocated and initially formed in the Great Song Academy of Sciences and the scientific framework that he has just built will collapse with a bang.

"Your Majesty, this is not some auspicious phenomenon, but a very natural phenomenon. Water droplets will scatter light, and when there are many water droplets, a rainbow will be produced when exposed to sunlight. ”

"Guys, that piece of equipment just now is called a prism. The effect of these water droplets is also equivalent to a prism. ”

Zong Shu's explanation made everyone understand. No wonder rainbows only appear after rain.

So that's the truth!

Li Ruoshui also saw that Zong Shu made three rainbows in a row, and at first he thought that Zong Shu was really some kind of god.

As soon as I heard Zong Shu's explanation, I was immediately excited, this is Gewu!

No wonder, Zong Shu has been criticizing the literati for being useless, and putting "poor reasoning" on his lips all day long, but he has not seen any truth in Ge.

Zong Shu proved to everyone with practical actions that Gewu must be combined with practice, rather than blindly drilling into ancient books.

When Zong Shu made the warm pavilion, he put forward the concept of water pressure, which everyone didn't understand at first. And everyone has been using the warm pavilion for a long time, and they understand that water pressure is like this.

If there is no warm pavilion, if you don't operate in practice, how can you understand this truth?

This is the real thing.

Zong Shu has claimed many times that "the champion is a fart", and from the matter of "Gewu" alone, Zong Shu is not unreasonable.

Li Ruoshui is full of experience, and he is also a regular object.

The principles he came up with are all the principles of being a man and an official, not the principles of all things in nature.

Looking at Zong Shu at this time, Li Ruoshui felt that this guy was not so hateful.

It's just that this guy is still too crazy.