Three Kingdoms: Starting War Strategy System

Liu Chen did not break the illusions of these officials.

His main purpose of making the"mercury thermometer" was for medical purposes.

As for the temperature detection of the firing kiln, it needs to be as high as thousands of degrees, which cannot meet such high requirements for the time being.

Don't look at the mercury measurement temperature range is -39C-357C.

However, due to process problems, the outer glass may melt and deform due to high temperature, so the actual temperature that can be measured will not be too high.

At first, Liu Chen just wanted the workers in the glass production department to practice their craftsmanship through this exquisite and compact glass manufacturing.

I really didn't expect that they could develop it.

This is an unexpected surprise.

However, there are only three mercury thermometers available today, so it is naturally difficult to popularize them. Moreover, mercury is poisonous, and a slight accident may lead to mercury poisoning.

You also need to prepare sulfur powder in advance.

This allows the mercury thermometer to be broken and turned into mercury sulfide through chemical action, which will not affect health if inhaled.

Although there are huge disadvantages, the advantages are also very obvious.

In this era of manual visual temperature measurement,The advent of the thermometer can accurately obtain the final temperature, which will lead to greater accuracy in patient treatment!

Actually.

In addition to"mercury thermometer", there are also"alcohol thermometer" and"kerosene thermometer" which are safer.

However, the"alcohol thermometer" measuring temperature range is -110~50℃, and is generally used to measure the lowest temperature.

Although both are based on the principle of thermal expansion and contraction, the measurable accuracy is slightly lower and not as good as the"mercury thermometer"."

"The measuring temperature range of"kerosene thermometer" is -30℃~150℃, which is also unable to measure accurately. Most of them are used for indoor temperature measurement.

Moreover,"kerosene" needs to be extracted from"petroleum".

The Han Dynasty has already appeared and was using"petroleum" , Unfortunately, the refining technology is too troublesome, and Liu Chen will not get involved in the short term.

However,"petroleum" is the fuel of internal combustion engines. If Liu Chen starts the industrial era in the future, he will definitely step into this field, and he will naturally get involved!

Of course, these are That's a story for another day.

If you want to apply it to medicine in the short term, the"mercury thermometer" is the safest.

After thinking about it, Liu Chen said:"Invite Dr. Hua Tuohua"

"yes."

Immediately, officials ran to look for Hua Tuo.

Liu Chen planned to give one of the three mercury thermometers to Hua Tuo's medical school for testing at special times.

"Public and.

Liu Chen looked at Professor Ju and said,"You are in charge of school affairs. Bring a thermometer to the school's Physical Chemistry Department and let them use it during experiments."

"Remember to ask them to be careful, in case they need to sprinkle sulfur powder on top of the mercury liquid after breaking.……"

Liu Chen informed Jushou of the precautions.

The official in charge of the forging yard on the side wrapped a mercury thermometer in layers and used cotton, silk and other buffers to prevent the glass tube from breaking.

Then he handed it over to Jushou.

Jushou took it with great care and said solemnly:"Please rest assured, my lord, I think the teachers and students will be extremely careful with such precious things!"

"Don’t worry too much. If it breaks, it breaks. Don’t shelve it. Things are for use."Liu Chen said with a smile.

Everyone around him thought of something and suddenly laughed.

The school has set up physical chemistry courses, and some simple experimental operations have been carried out.

Unfortunately, due to the unfamiliarity of the technology, and the later physics exchanged by Liu Chen Chemistry books were too esoteric and were limited by the material limitations of the times, causing many equipment to be damaged.

For example, dozens of sets of glass instruments such as beakers had been broken and exploded. The school teachers were so distressed that they did not allow students to operate alone.

Liu After Chen learned about this, he immediately intervened.

It doesn't matter if things are broken or wasted.

But if there is no experimental operation, how can we develop scientific knowledge and explore the future? How can scientific power in a certain field appear!

Some materials still need to be passed Distillation extraction of certain materials.

For example, the"kerosene" Liu Chen just mentioned needs to be extracted from"petroleum". How do you know if you don't do experiments? How can you continue to study in depth?

For example, cement, the composition method is so simple, and the material is Han Dynasty All. If you have the spirit of experimental exploration, you can quickly research it with the wisdom of the ancients.

For example, the materials of gunpowder, monosulfide, dinitrate, and charcoal, it is estimated that anyone in future generations can recite them.

But if there is no specific operation of the experiment, how can Do you know the specific ratio? How do you know which ratio results are better?

For example, when making soap, glycerin will appear at the same time. If you want to carry out nitration reaction and turn it into nitroglycerin, you also need to conduct experimental research.

So.

Because of the equipment and materials To avoid losses and waste, students are not allowed to do experimental operations? These behaviors of abandoning food due to choking are absolutely unfeasible!

"My subordinates understand and will definitely tell those teachers!"Jushou was also dumbfounded.

During the conversation among the group, Hua Tuo and other heads of the medical school came over.

"Your Highness, are you looking for us? Hua Tuo asked doubtfully.

Liu Chen took out the mercury thermometer. After learning the function of the thermometer, Hua Tuo and other doctors were extremely excited.

"What an artifact!"

"This is an artifact!"

Hua Tuo and other doctors were so surprised that they couldn't help but call it a miracle. They didn't waste time, asking Liu Chen about the details of use and other related questions, and measured a doctor's armpit.

The mercury thermometer can be placed in the mouth and back. , but after Liu Chen thought about it, it was more convenient, hygienic and safe under the armpit!

Hua Tuo took the pulse of the doctor's wrist. While measuring the pulse, he guessed the person's skin temperature through skin contact.

About a cup of tea After that, Liu Chen signaled that they could take out the thermometer.

"Your Highness, is this 37 degrees?"

A doctor surnamed Zhao asked Liu Chen in a low voice to avoid being heard by Hua Tuo, which would not achieve the effect of comparison.

Arabic numerals have been popularized in all walks of life in Changshan.

"That's right."

Although the thermometer will have some deviations due to craftsmanship, scale and other reasons, it will definitely not be too large.

37 degrees is also the constant temperature of the human body, and the difference is not too big.

Dr. Zhao nodded.

On the side, a doctor surnamed Wang wrote with Liu Chen I walked aside with the comparison table and almost stuck it on the paper and read:

"37 degrees is the standard constant temperature, 38 degrees is considered a low fever, and 40 degrees is a high fever.……"

"It all depends on Dr. Hua’s measurement results. No matter what, the time efficiency has been greatly reduced!"

Until the thermometer results came out, Hua Tuo was still groping for the patient's skin. After all, guessing based on metaphysics and experience also takes time to confirm.

Liu Chen looked at Dr. Wang and saw him reading the words on the comparison chart. , obviously you can’t see clearly.

If you can’t see clearly at close range, this is hyperopia, or it may be presbyopia!

"It seems like I need to find some time to polish the glasses."Liu Chen thought in his mind.

However, without precision instruments, it is impossible to make accurate prescriptions. This kind of glasses is also harmful to the eyes.

But as long as the time is controlled and used when needed, the advantages outweigh the disadvantages.

Compared with old eyes and blurred vision, You can see the world as it is again. I believe many people will choose to wear glasses. People like Dr. Wang who cannot see text at close distances can actually use a"magnifying glass" to solve the problem. After all, far-sighted glasses and magnifying glasses both use the principle of convex lenses..

This can be mass-produced!

Liu Chen's mind was like lightning, and the time passed minute by minute until a quarter of an hour later.

Hua Tuo stroked his beard and sighed:"Normal temperature, no problem! By the way, what are the results of the thermometer? Is it accurate?"

"37 degrees, the standard temperature, is extremely correct!"Dr. Zhao said

"This is an artifact! You can measure your temperature in just a short time!"Hua Tuo's face was full of shock.

Others were also moved.

"It took Dr. Hua a quarter of an hour, but this thermometer only requires a cup of tea!"

"Your Highness is truly knowledgeable, wise, and mighty!"

"With this product, we can know the patient's temperature as soon as possible, and then prescribe medication as soon as possible without wasting time!"

"Your Highness, our medical school doesn’t need much. We just need a hundred thermometers for the time being."

Listening to the words of these doctors, the official in charge of the forging institute on the side had black lines on his head and complained:

"Our forging institute spent a lot of hard work and only produced three of them, but you are like a lion!"

"ah?! Three?!"

Hua Tuo and other doctors were stunned with surprised expressions. How should they allocate only three of them?!

The officials of the Forging Institute obviously guessed their thoughts and continued:"Don't think too much, you can only take three of them. Of...one!"

While saying that, the officials of the Forging Institute carefully took the thermometer from Dr. Zhao's hand.

Then, after disinfecting it with alcohol, they wrapped it up and handed it to everyone in the medical school.

Ignoring the confused faces of Dr. Hua Tuozhong, Forging The official in charge of the hospital raised his hand and said:

"Your Highness, one team from the School of Medicine, one team from the School of Physics and Chemistry, and the remaining one can be left to our Blacksmithing Institute to continue research?"

"no problem. Liu

Chen nodded and said with a smile. Then he comforted Hua Tuo and other doctors who had regretful faces:

"Doctors, don't be discouraged. Once the manufacturing department's technology is perfected, mass production will be possible."

Hua Tuo and other doctors sighed helplessly and nodded repeatedly.

"That's all"

"well! Pity!"