When we first came into contact with physics, we were all attracted to interesting experiments. Baidu search literature network, more good free reading. There are some experiments that we are used to in normal times, but when the teacher explains the reason, we all sigh, wow, this is the case

Li Tai and Ding Yi squatted in the corner of the wall where there was sunlight, and put a basin of water in front of them. Ding Yi took out a glass mirror and inserted the mirror diagonally into the water in Li Tai's surprised eyes, the mirror facing the sun.

"King Yue, look at the wall"

Li Tai looked up, and at this time there was a rainbow on the wall Li Tai stammered, pointed to the rainbow, and asked: "Ding Dingyi, this is what you made" At this time, everyone knows that the rainbow is the manifestation of God after the rain, and Ding Yi actually made a rainbow

"Well, you can too, come and try," Ding Yi encouraged.

Li Tai pointed to himself a little unconfidently, "Can I too?" he now felt that Ding Yi looked a little vague

Take out the mirror, stuff it to Li Tai, and instruct him on how to do it. Sure enough, a rainbow appeared on the wall again

"Your Highness, this is a miracle, Your Highness is really a god," Li Tai's servant bowed to the ground at this moment to compliment, and he didn't see him say just now.

Ding Yi scolded viciously: "What nonsense, this is just a physical optics experiment, you can come"

The servant immediately refused, which is what he can do Li Tai is not so surprised now, he can do it himself, he turned back to the servant and said: "This kind of thing, don't talk about it in the future, you can try it too"

The minions, who are rejecting all over their bodies, have not escaped the fate of the refracted rainbow.

"Ding Yi, what is the reason for this" After doing experiments, Li Tai was eager to know the truth. Baidu search literature network, more good free reading.

Ding Yi said nonchalantly: "The sunlight is a mixture of seven colors, and what we do is to split it, of course, there are two kinds that people can't see, this will be talked about later"

The sunlight turned out to be a mixture of seven lights The first time he heard this kind of remarks, Li Tai was even more curious about physics in his heart, and there were two kinds of things that could not be seen This Ding Yi always aroused the mind of this king, but he was not in a hurry to answer

"It's physical optics, and today we're for barometric pressure. King Yue, come, let's proceed to the next one"

"Yes, yes, yes, there is air pressure" was surprised by the rainbow just now, but he forgot about the air pressure.

A semi-finished glass cup taken from the glass workshop, mixed with a few bubbles, the whole cup is green with hints of other colors. Li Tai exclaimed Liuli, and Ding Yi disagreed.

Cover the rim of the cup with a handkerchief made of cotton cloth and tie the handkerchief to the cup with a rope. Then let the person carry the kettle and pour water on the handkerchief, and the water level could barely be seen from the outside, and the cup was filled with about four-fifths of the ding, and he stopped.

Holding the cup with his backhand, he turned the cup around violently, but saw that the water was blocked in the cup by the handkerchief, and there were only a few drops of water dripping from time to time.

"Yue Wang, this is because of atmospheric pressure"

Li Tai was shocked that the water did not fall, and asked, "What is the atmospheric pressure?"

Put down the water glass, wipe your hands on your clothes, and say: "To know the atmospheric pressure, we must first know what the atmosphere is."

"Listen to me" finally got to the point, and Li Tai also asked Ding Yi for advice with a correct attitude.

"Atmosphere, in a nutshell, is the air we breathe. For example, if we humans want to breathe, this breath is the atmosphere. And the atmosphere is divided into many kinds, nitrogen, oxygen, carbon dioxide, and other noble gases, because there are no suitable tools right now, and I can't separate them and show them to you. That's also going to be the direction you're going to look into, try to separate these gases and these gases are light and heavy, for example. You pour lard into the water, and the lard floats on the water. Just as Pangu opened the world, the light ones floated, and the turbid ones sank, of course, Pangu was only conceived by people, and we must not take it seriously when we study physics, just to figure out the composition of this world, and the reasons, in recent days, you will follow the teachers of the academy to learn physics with me, starting from the basics, and re-understanding all things in this world."

Li Tai's face was confused, he didn't know what oxygen and carbon dioxide were, but Ding Yi said that he re-understood all things in heaven and earth, but he very much agreed with the two experiments just now, which had completely overturned his cognition

Well, there is one more person in the physics class, and Ding Yi didn't say Li Tai's identity, but just said that there was a new student. The teachers were not curious, and Li Tai was obsessed with physics and had no other mind to pay attention to others.

Since Changle came to Shiping, he stayed for three days and Tang Xue saw that the two of them were teasing students in the academy, instigating Erha to destroy Ding Yi's garden, watching Ding Yi and Li Tai do experiments, she felt that this place was much more fun than the palace

Finally, she was going back to the palace three days later, because Li Er didn't see her daughter go back, so she sent someone to urge Changle to bring the fold that Ding Yi wrote to Li Er, and left sullenly

Tang Xuejian, who had just had a playmate, suddenly changed again

Xue Yantuo is a tribe, Xiao Jian led people and Ding Li to reconcile. When Ding Li received the letter from the young master, he hid in the tent to read the letter.

On the third day of Xiao Jian's arrival, the leader of the tribe, Uatto, finally met with Ding Li, Ding Li had been here for three or four days, but Uato had never seen Ding Li.

The tribe of U'ato has more than 10,000 people, 70,000 cattle and sheep, and more than 20,000 horses. Ding Li specially selected this tribe, and when he came, he took a fancy to the fact that this place was relatively large

Entering the tent, Ualto and several other leaders were among them. Ding Yi bowed and said, "Ding Li has seen the leader."

Uatto whispered, and the interpreter next to Ding Li said, "Datang people, I heard that you want to do business with us"

"Yes, Your Excellency, Chief. I was ordered by the Marquis of Shiping of the Tang Dynasty to send warmth to the grassland people" Yesterday I received a letter from Ding Yi, and the young master explained some things.

Uato looked disdainful and said, "Hehe, I don't believe you Datang people have such good intentions."

Ding Li knew that he would not succeed so easily, and explained: "Your Excellency, our Shiping Marquis has the world in mind, and we have no prejudices against the people in this land, you may not know, our Marquis is worried that the tenants will not have enough to eat, and deliberately said that if they don't send their children to the house to study, they will collect fifty percent of the rent." If the child is sent, it will only be harvested into one percent, these years of natural disasters in the Tang Dynasty, the grassland is also full of disasters, I heard that because of the weather, many people are starving to death and freezing to death, our Hou Ye is compassionate and compassionate, thinking that the people of the grassland are still suffering from the cold, I can't help but have sympathy, so I specially commissioned me to bring food and salt to the grassland people."

As soon as they heard about the grain and salt, the crowd could not sit still. They really need these now, Ualto clenched his fists, and the heavens are fighting.

"I don't know what Shi Pinghou exchanged for grain and salt, horses, cattle and sheep, that is impossible, we grassland people live on these"

"The leader is too worried, we just need wool"

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