"Your Majesty, this is what you want."

In the glass workshop, the supervisor handed over a short glass rod to Xiao Ming, and there was a white mark in the middle of the glass rod.

This thing is Xiao Ming’s purpose for coming here, and he is a thermometer.

The earliest thermometer in history was invented by the Italian scientist Galileo in 1593.

One end of this thermometer is an open glass tube and the other end has glass bubbles as big as walnuts. When using it, heat the glass bubbles first and then insert the glass tube into the water.

At this time, as the temperature changes, the water surface in the glass tube will move up and down. The change of temperature and the height of temperature can be determined based on the amount of movement.

It can be said that the thermometer at this stage contained water. Then in the 17th century, France reduced the volume of glass bubbles and changed the temperature measurement substance to mercury. This was the prototype of later thermometers.

Immediately afterwards, the Dutchman Valenheit used alcohol in 1709 and mercury as a measuring substance in 1714 to create a more accurate thermometer, which is the development process of the thermometer.

With the birth of the thermometer, the standards for Celsius and Fahrenheit temperature were also born.

Although a thermometer is just a small invention, this small invention is of great importance because only with a thermometer can you test the specific temperature value.

In fact, this glass mercury thermometer is not very precise or complicated. The step is to make hollow glass tubes first, which is not very difficult for today's glass workshops.

As for the mercury bubbles and the small bubbles that act as partitions in this thermometer, they are nothing more than glass blowing techniques.

After making the glass rod, fill it with mercury, and then heat the glass tube under low air pressure and heat the sealing area.

At this time, the mercury part is on the other end, and the glass has not good thermal conductivity, so it basically does not affect the mercury. After these actions are finished, it is a scale. This work is also very simple because Xiao Ming has a ready-made standard reference, and it only needs to follow the modern Celsius standard.

He is also preparing to adopt degrees Celsius as the future temperature standard for the Great Chongqing Kingdom.

Now the thermometer in his hand is used to measure the temperature of the human body. His purpose is to use the thermometer to establish the temperature standard in the Great Yu Kingdom, so that he can produce industrial thermometers and still promote the temperature standard.

In his opinion, whether it is the steel industry or the smelting industry, the temperature control of the production process is very strict, and accurate temperature control can improve the quality of industrial production.

Therefore, after the human body thermometer, what he wants to produce is an industrial bimetal thermometer. This bimetal thermometer works using the principle that two different metals expand differently when the temperature changes, and can be used to detect the temperature during industrial production.

This thermometer usually makes the metal sheet into a spiral roll shape. When the temperature of the multi-layer metal sheet changes, the metals of each layer expand or shrink vary, which will cause the spiral roll to be rolled up or loosened.

Since one end of the spiral coil is fixed and the other end is connected to a freely rotating pointer, when the bimetallic sheet feels the temperature change, the pointer can indicate the temperature on a circular dial scale.

For him, this thermometer can be produced in Qingzhou at the moment. As for the advanced resistance thermometer, it is still out of reach. However, for him, this is enough to use. He only needs to hand over the structural diagram of the metal thermometer to the watchmaker. This is not a problem for the watchmaker who can make pendulum clocks.

"By the way, there is a microscope in addition to this?" Xiao Ming asked.

This time, he not only assigned the task of producing thermometers to the glass workshop, but also explained the work of making microscopes.

Compared to the telescope, this microscope is another extreme, and he is planning to manufacture it and send it to medical school.

"Your Majesty, wait. This microscope was made by another group of craftsmen. It will arrive soon." Fang Jian said. As soon as he finished speaking, a craftsman walked towards him with a microscope.

Like monoculars, the microscope in the hands of craftsmen is full of the quaint taste of the eighteenth century, glass lenses, and metal bodies.

After getting these two things, Xiao Mingxin was satisfied. He said to Qian Dafu: "Let's go to the medical school, and Huang Tingzhi should understand my power."

Xiao Ming was happy, and Qian Dafu also became happy. Although he didn't know what these two were useful, he must be a powerful thing from Xiao Ming's expression.

After leaving the glass workshop, the two went directly to the medical school.

After splitting the Bowen Academy, Xiao Ming found another place for the Medical College, not far from the Bowen Academy, which is the distance between the two Minfangs.

The high death rate of injured soldiers in this Northern War forced Xiao Ming to pay attention to the development of medical colleges. If medical technology could keep up, soldiers would not have lost their troops so much.

In the future, the Great Chongqing Kingdom will face more wars, and it is very important to cultivate a group of refined medical officers at this time.

When he arrived at the Medical School, Xiao Ming went directly to the clinic set up in the Medical School. On weekdays, Huang Tingzhi taught the students and also treated the people here.

"Emperor." Xiao Ming's arrival surprised Huang Tingzhi a lot, and he immediately stood up to salute.

Xiao Ming asked Huang Tingzhi to give up the gift. He took out the thermometer and microscope and said to Huang Tingzhi: "Old Huang, I am here today to give you two powerful tools."

Huang Tingzhi was a little stunned. He looked at the glass stick in Xiao Ming's hand, then at the microscope, and said confusedly: "Prince, what are these?"

"Thermometer and microscope." Xiao Ming said that it was not surprising that Huang Tingzhi did not recognize these, because Huang Tingzhi is still learning the medical classics he gave him, and has not yet been exposed to Western things.

"This..." Huang Tingzhi was still a little confused.

Xiao Ming said: "How does Mr. Huang judge whether a person has a cold on weekdays?"

"Of course, it's looking, listening, asking and touching."

Xiao Ming said seriously: "With this thing, I don't need to look, hear, ask and touch to know if this person is sick?"

"The emperor was joking. How could the emperor know without looking, hearing, asking and touching?" Huang Tingzhi suddenly burst into laughter when he heard this.

Xiao Ming knew that Huang Tingzhi was very confident, so he was always worried that he would disdain Western medicine, so he came here in person to let Huang Tingzhi experience his unique medical skills.

Hearing this, he said, "Old Huang only needs to use this thing to measure the body temperature of the patients in the medical officer."

Then Xiao Ming explained the principle of the thermometer and briefly explained the knowledge about human body temperature.

Holding the thermometer, Huang Tingzhi's expression was shocked. He half-believed and half-doubtedly tested his body temperature for every patient in the clinic.
Chapter completed!