Great Tang’s Talented Little Landlord

Looking at the dark crowd in the Academy Auditorium, Li Wangyou, the initiator, was a little unexpected.

He didn’t expect it at all. When more than 2,000 people were squeezed into the Academy Auditorium, it would be in such a situation…Its crowdedness is almost comparable to the train station during the Spring Festival travel period.

The originally spacious walkway is now black and full of people.

Xu Jingzong really earnestly carried out Li Wangyou’s orders.

At first, Xu Jingzong was also worried that these famous scholars, eminent monks and eminent monks would be furious when they learned that the Academy arranged for them to sit on the aisle floor, leading to many incidents.

But what Xu Jingzong didn’t expect was that none of the more than 1,000 people objected, they all obeyed the Academy’s arrangements and sat on the floor obediently without complaining.

In fact, Xu Jingzong is totally overly concerned.

These people are even more worried that they are annoying Li Wangyou and cannot listen to the knowledge handed down by the ancestors. Therefore, for them, even sitting on the floor to listen to the lecture is quite sweet.

It is the Academy students who were surprised to see so many strangers appear suddenly.

Fortunately, the students of the Academy can be considered to have seen the world.

Especially those students in the second grade, they get along with Crown Prince Li Chengqian and the others day and night, and they all develop a big heart.

A few days ago, in the Academy Hemisphere Experiment, this group of Academy students saw the magnificent Emperor Your Majesty with their own eyes. Even the well-know figure among the Academy students was kindly received by Li Er, the Dean of Academy…

So I faced these famous scholars, scholars and monks who were all famous in Ch_ng’n. When an official, the students did not show any timidity.

But the Academys students, after all, are only six or seven-year-old Innocent Kids. Even though the Academys Court Academecian and Assistant Scholar have been maintaining order, they will inevitably whisper and whisper to each other, making the Academy Auditorium appear to be Very noisy.

When Li Wangyou appeared on the podium of the Academy Auditorium, the noisy auditorium suddenly became quiet, and everyone stood up respectfully and bowed to Li Wangyou for paid respect.

Even those celebrities and scholars with hair and beard all white, noble monks, who are actually like the teachers and students of the Academy, all stood up respectfully and respectfully stood up, held the discipline, bowed to them, let Li Wangyou feels a little uncomfortable.

These big scholars, like the pupils of later generations, sat back solemnly on the futon on the floor, with paper and pen in front of them, and they looked like they were listening carefully and were ready to take notes at any time, which made Li Wangyou feel blushed. with shame.

But speaking frankly, the feeling of being respected like this is actually…very cool!

Men Sao man calmed his mind, coughed lightly, and started today’s Academic Course.

Squeezed into the auditorium with more than two thousand people, it suddenly became absolute silence. Everyone was concentrated attention completely and listened carefully.

“Students, in the last lesson, we learned about the composition of light. In this lesson, what is temperature?” Li Wangyou said, turning around and wrote “Temperature” on the blackboard behind him. “Two words.

The reason why he prepared to instruct knowledge about temperature today is because he wanted to explain the plateau temperature to Li Er a few days ago, but he couldn’t speak.

For the description of temperature in China since ancient times, it is too unscientific to rely solely on subjective words such as cold, cold, cool, warm, hot, and hot.

He wanted to make a thermometer, but it was difficult for a clever woman to cook without rice.

Without glass, it is difficult to carve and polish a thermometer by relying on crystal. Therefore, to Li Wangyou, the thermometer is just a resentment that’s all in his heart.

But didn’t expect, he spent a lot of money, and the craftsmen he invited to burn the Glass brought great news a few days ago.

According to Li Wangyou’s instructions, they used quartz sand and added soda and lime to fire a transparent object that looked like crystal.

After the craftsmen presented their results, Li Wangyou and Su Changqing were surprised.

Glass!

Li Wangyou dared to make a bet that the fist sized, transparent and irregular Crystal in front of him, if it were not glass, he immediately slammed his head on the tofu.

Su Changqing also had the same excitement, holding the piece of glass that is not beautiful, and there are many bubbles in it, carefully looking up and down. It was like a valuable diamond in her hand.

In fact, it is not wrong to regard it as a “diamond”.

Being able to make glass in Great Tang, its value is even greater than a diamond mine!

Since Zhang Qian hollowed out the Western Regions, the glassware produced by the Roman Empire began to be introduced to the Central Plains in large numbers, and they were luxuries for the nobles.

The value of glassware introduced to the Central Plains through the Silk Road can be exchanged for the same weight of gold.

But in this era, regardless of whether it is the Persian or the Roman Empire, the glass produced by the manufacturer cannot be said to be pure and transparent.

In Li Wangyou’s house, there are also “imported” glassware that others gave as gifts. Judging from the critical eyes of him and Su Changqing, these glasses are still far from the glass of later generations, at most between the glass and the glass that’s all.

Glass was difficult to fire in ancient times, mainly because the melting point of sand was too high.

With a melting point of 1600 degrees, it is extremely difficult to reach such a temperature with today’s technology.

But Li Wangyou knows that adding soda to the sand can lower its melting point to more than 800 degrees, but the burned glass is a disposable product that will dissolve in water.

Therefore, it is necessary to add lime to the glass so that the fired glass can be used.

This knowledge was discovered by Li Wangyou and Su Changqing, who almost wanted to break their heads and discussed with each other, only to dig out from various pieces of knowledge in their memory.

Now the craftsmen really use this method to fire transparent and colorless glass, which naturally made the two of them overjoyed.

As for the glass blowing technique, in fact, these Great Tang craftsmen who make glass do not need Li Wangyou to show off his shallow common sense.

Glass blowing technique was introduced by the ancient Egyptian invention as early as one thousand years BC. Later, the Romans learned this technique and passed it along with the introduction of Western glassware into China. Into the Central Plains.

Learning that the craftsmen even know glass blowing, Li Wangyou was naturally overjoyed, and immediately ordered the craftsmen to blow some glass tubes for him to use to manufacture thermometers.

There is a round sphere under the glass tube.

Pour mercury into the glass tube, and then seal the mouth of the tube with liquid glass, and a thermometer is considered a manufacturing.

As for measuring temperature, it is not difficult to mark the temperature on the thermometer.

The boiling water is one hundred degrees, the ice-water mixture is zero degrees, and the middle is divided into 100 equal parts.

A thermometer that is not a standard but sufficient to measure the approximate temperature is considered a manufacturing completion.

It is precisely because of the thermometer that Li Wangyou temporarily modified his plan, preparing to popularize the concept of “temperature” in Great Tang in advance.

“Everyone, I know that water is hot and cold, and weather is hot and cold. But have you ever thought that length and weight have units of measurement, and why I can only use Words like warm, hot, cold? Everything should have a degree, so the Taoist ancestor will measure the degree of cold and heat, which is called temperature! Today I want to instruct all living things, it is temperature!”

Li Wangyou’s words fell in the ears of many Academy students, but I don’t think so. After all, they are still young, with little knowledge, and they don’t understand the mystery.

However, the celebrity scholars, high-ranking monks, and numerous officials who were in attendance were shocked, and involuntarily straightened their backs…