The most arrogant in history

Chapter 184 The problem of big and small iron balls.

Ye Kun was speechless for a while.

It is actually not easy to explain the principle of the steam engine to Wei Caiqin.

Just then, the water boiled.

The lids of both kettles were lifted up.

Ye Kun pointed at the lid of the pot and asked:

"Lao He, why is the lid of the kettle so heavy that it is lifted up? The kettle can hold two kilograms of water, but just now, Tiantian only added two ounces of water. What force lifted the kettle up?"

He Tiantian whispered:

"Master Ye, is it because of the expansion of water vapor?"

Ye Kun nodded approvingly: "Yes, this is the power of water vapor expansion. If this power can be effectively utilized, it will be a steam engine. Just like our water-powered sawing machine, it will provide a steady and continuous source of power."

Lao He asked: "Is the power of steam stronger than the power of water?"

"A hundred times more powerful!"

"Then let's make it quickly. I happen to be free these few days!" Lao He became excited.

"Even if we die, we may not be able to build a real steam engine."

Ye Kun couldn't help but smile: "I'm just doing an experiment to let you understand the basic principles of the steam engine."

Lao He opened his mouth wide: "We can't do it even if we die?"

Wei Caiqin couldn't help but asked, "I didn't see the steam power you mentioned. Can you make something simple so I can see it?"

"no problem."

Ye Kun asked Tian Tian to get a piece of cardboard and fold a small windmill.

Then press down the lid and place the windmill in front of the small hole on the spout of the long-spouted kettle.

The steam coming out of the small hole in the spout immediately made the windmill turn.

“This is the steam engine.”

Ye Kun set up the windmill and gave a lesson to Lao He and his daughter: "In theory, when water vapor generates power and starts to do effective work stably and continuously, it is a steam engine."

Old He was stunned after hearing what he heard. He looked at the windmill and fell into deep thought.

Wei Caiqin was still confused and sighed:

"Brother Ye, I don't understand what you are saying. Is your research on these things useful?"

“The purpose of life is to understand this world.”

Ye Kun smiled and said, "Mr. Qin, let me ask you a question. A large iron ball weighing 100 jin and a small iron ball weighing 2 liang are dropped from a high tower at the same time. Guess which one lands first, the large iron ball or the small iron ball, or both at the same time?"

The problem of big and small iron balls falling to the ground seems very simple now. Anyone who has attended junior high school knows the correct answer.

However, people in ancient times did not understand this.

Aristotle, a great scholar, believed that the heavier the object, the faster it falls to the ground. He even came up with a formula - a 100-jin iron ball falls ten times faster than a 10-jin iron ball!

This theory has misled mankind for more than a thousand years.

In the end, it was Galileo's experiment on the Leaning Tower of Pisa that changed people's views and corrected Aristotle's mistakes.

Sure enough, Wei Caiqin was as good as Aristotle. Without even thinking about it, she squinted and said:

"Of course the 100-pound iron ball hit the ground first. I'm not a fool!"

Ye Kun smiled and asked Lao He again.

Lao He followed Ye Kun and had a certain understanding of air buoyancy and resistance. He pondered and said:

"The big iron ball has greater resistance in the air, while the small iron ball has less resistance. So, the small iron ball should hit the ground first."

Wei Caiqin laughed: "Old He, Lord Ye said you are smart, but I think you are stupid!"

Ye Kun held back his laughter and asked He Tiantian again.

He Tiantian had been thinking about it for a long time, frowned and said: "I think they should land at the same time."

Ye Kun asked: "Why do you feel so?"

He Tiantian said:

“If the big iron ball lands first, it means that the heavier the weight, the faster the speed. Then, if we tie the small iron ball to the big iron ball, we will get two contradictory results.

First, the addition of the small iron ball makes the big iron ball heavier and will land faster; second, the addition of the small iron ball slows down the falling speed of the big iron ball, so the big iron ball falls slower.

No matter which ball lands first, the big ball or the small ball, when tied together, there will be two contradictory results. Only when the big ball and the small ball land at the same time and are tied together, there will be no contradictory results! "

"Wow……"

Ye Kun was amazed, clapped his hands and said with a smile: "Tiantian, you are smarter than your father. I didn't expect your way of thinking. Congratulations, you got it right. The two iron balls did land at the same time."

From the perspective that Tiantian just considered, Galileo's Leaning Tower of Pisa experiment could have been omitted.

This shows that Tiantian is smarter than Galileo!

Tian Tian was happy and shy, and whispered: "Master Ye, I was just guessing."

Old He also understood immediately and said with a smile: "What Tiantian said does make sense."

Wei Caiqin didn't understand and shouted, "I don't believe it. I want to find two iron balls and test it out!"

Ye Kun smiled and said, "We don't have tall towers or buildings in Dongba County. Go back to Jingzhou and find a high place to test it. Be careful."

Wei Caiqin glared: "Wait until I get home and test it out, then I'll settle the score with you."

Ye Kun was speechless. If he and Wei Caiqin had a child in the future, would this IQ be passed on to the child?

After dinner, Wei Caiqin continued to visit Lao He’s laboratory.

"Hey, I like this car, can I play with it?"

The tricycle inside caught Wei Caiqin's eye again.

This is a front-wheel drive, fixed gear tricycle designed by Ye Kun for fun.

"Of course you can. This is my latest high-tech product. It has front-wheel drive, a 360-degree panoramic sunroof, and consumes three bowls of rice per mile... Let me show you."

Ye Kun got on the tricycle and pedaled around the flat yard.

"Come down, come down, and let me play."

Wei Caiqin was overjoyed. She pulled Ye Kun down, sat on the bike herself, pedaled hard, and spun around in the yard, having a lot of fun.

Ye Kun discovered that Wei Caiqin, like Yuejuan's two silly brothers, was obsessed with tricycles.

This is no wonder, Wei Caiqin and Yuejuan’s two younger brothers are relatives!

Lao He stood beside Ye Kun and watched, shaking his head.

"Master Ye, this tricycle is very tiring. I don't think it can be used for transportation."

Ye Kun nodded: "Adjust the structure, design the front and rear pulleys, and add a transmission belt, and it should still be usable. When I have time, I'll give you the drawings, and then I'll just figure out the transmission belt."

Ye Kun had thought about this thing a long time ago. Chain drive cannot be realized at present, but belt drive is no problem.

The material of the belt can be made of multiple layers of cowhide or pigskin superimposed and cut into a triangular belt.

The tricycle does not have much use at present, but it is good to manufacture it to broaden the horizons of the craftsmen.

In addition, many technologies in the manufacturing industry are interoperable. Once craftsmen learn about pulleys and belt drives, they may be able to use them in other machines.

Wei Caiqin finally got tired of riding and wiped the sweat off her head: "Master Ye, this tricycle is fun, but it's very tiring."

"Although it's tiring, it's cheaper than a horse-drawn carriage. It costs a lot of money to feed a horse every year."

Ye Kun smiled and said, "Wait for me to modify it. It will be easier than this one. I will send someone to give it to you. Then, you can ride the tricycle every day and wander around the streets and alleys of Jingzhou."

Wei Caiqin stuck out her tongue and said, "My father would scold me if he saw me riding a tricycle."

In ancient times, it was considered extremely indecent for a woman to ride a bicycle with her legs apart.

Although Wei Dingshan loves his daughter, he would never let her ride a bicycle on the street.

Seeing that it was getting late, Ye Kun said goodbye to Lao He and his daughter and sent Wei Caiqin to the inn to rest.

When they arrived at the inn, Wei Caiqin said, "Brother Ye, please sit down and have a cup of tea. I'll go take a shower and change clothes, and I'll talk to you later."

Ye Kun nodded and sat waiting.

It took a long time for Wei Caiqin to come out.

However, after changing into a bright red dress and letting her jet-black hair fall casually behind her head, she looked extremely charming.

The hibiscus comes out of the clear water and is carved naturally.

"If I were to compare West Lake to Xi Shi, she would look beautiful with either heavy or light makeup."

It was the first time that Ye Kun saw Wei Caiqin's gentle and pure appearance. He couldn't help but be moved. He took her hand and whispered:

"Qin'er, you always wear men's clothes. I didn't expect that you would be even more stunning in women's clothes."

Wei Caiqin blushed: "Brother Ye, if I were not Lord Wei's daughter, would you still praise me like this?"

"Silly girl, I like your beauty, it has nothing to do with Lord Wei."

Ye Kun stroked Wei Caiqin's hair and said, "To be honest, the last time I went to Jingzhou, visiting Lord Wei was secondary. The main purpose was to visit you. Who would have thought that you are Lord Wei's daughter."

"Liar." Wei Caiqin pinched Ye Kun:

"My father said that you should have guessed my identity a long time ago, so you let me act silly, played with me, and deliberately made me happy."

"No no……"

Ye Kun refused to admit it and pulled Wei Caiqin to sit down: "Qin'er, I'm going to take a shower too. I'll stay with you tonight, okay?"