Chapter 578 Thermos Flask

Looking at the heavily guarded gate of the Lord's Mansion, the former alchemist Wells lingered in the open space in front, so much so that the guards on guard cast suspicious glances at him.

Finally, he adjusted his clothes and walked towards the door with a solemn expression.

Now Wells has dual identities as a professor of chemistry at Wyss College (a title invented by Lord Graiman) and the head of the chemistry laboratory (the other one is Hoffmann, who is older than him and is also from Jingyaolai). Alchemist), according to Earl Grayman's past performance, he is one of those "high-level talents" who are given special courtesy by the Earl, and he is usually respected. And Wells's character is also the type to say what he wants, and he has always been outspoken in front of the lord.

But this time, although he came with determination, he hesitated, hesitated, and even feared at the last moment.

Wells wanted to find out what Paul was talking about, which had something to do with the rebellion in Arda not long ago. Needless to say, this is a very sensitive matter. Although Paul Greenman usually laughs with everyone and makes harmless jokes with him, it will not matter. But after all, he is a lord and a ruler. When he is truly When it comes to the core thing of this type of person - power, it is likely to change to another face immediately, and that rebellion is aimed at taking away his power, and even his life.

Wells knew that his request might offend the lord.

Wells was happy that Paul was able to put down the rebellion, because he had never met a lord who was so supportive of alchemy or chemistry. When the rebels in Lake Town spread rumors that the lord had been killed, he was sad. On the one hand, it was because Paul appreciated him, and on the other hand, he didn't know that the next lord would still be willing to pay for the chemistry laboratory.

However, there are some things that must be done even if they offend the lord.

Wells handed his pass - a new measure after the rebellion - to the guards who came to inspect, and entered the castle gate after a search.

…

"Ah, my dear Wells, you have come just in time."

When Wells pushed the door open, a familiar voice sounded, and it was from Paul.

Weasel did not meet Paul in the lord's office, but was led to the lord's workshop, or laboratory. This did not surprise Wells. Everyone knew that Count Paul Grayman was an inventor. In addition to performing his daily work as a lord, he often tinkered with strange things in his so-called workshop. When someone came to visit at this time, Paul would call them into the workshop to show off his new invention.

And Weasel was not surprised to see another person in the workshop - Guy Burns, the supervisor of the machinery factory. He was a frequent visitor to the workshop. The lord often mixed with him to discuss machinery-related issues.

Speaking of this person, Wells' mentality is a bit complicated. On the one hand, they are both leaders in their respective fields and admire each other. On the other hand, the machinery factory and the chemical laboratory are both big money hogs and fierce fund-raisers. competitor.

After Wells saluted Paul, he and Burns greeted each other.

"Lord Grayman, I am here this time..." Wells wanted to express his request anxiously.

"Oh, please listen to me first...or rather, watch me do it first." Paul interrupted him, with a look of excitement on his face at this time.

Looking at the table in front of Lord Wells, there was a large glass bottle placed on it. Different from ordinary glass bottles, the bottle body seemed to be made of two layers of glass.

Wells: "Is this...?"

Paul: "Hoho, this is my newly designed thermos."

Wells: "A thermos?"

"Yes, a thermos." Paul explained to him: "You see, after several years of hard work, the New Life Movement we launched has popularized a new way of drinking water in major towns - drinking boiled water, but not Every family has sufficient funds to buy fuel during non-winter periods, so we have There are installations in big towns. You can buy boiled water for drinking by paying a few copper coins. However, it is a pity that the boiled water will cool down quickly. However, the current insulation technology-wrapping cotton or fur on the container has the best effect. Very limited. So, I designed a new insulation technology, which is this thermos pot.”

Paul pointed to the double-walled glass bottle.

Wells stared at it for a while and asked in confusion: "Why is the bottle made like this? What mechanism can it keep warm?"

"We know from daily life experience that [heat] can be transferred. You see, when you are close to a flame, you will feel the heat. Furthermore, when you take a step of ice water and a cup of boiling water and bring them together for a while, the ice water It will become warmer, but boiling water is not so hot. What does this mean? I speculate that the so-called [heat] is like water. Water flows from high places to low places, and [heat] is transferred from high temperature places to low temperature places. —Without any other intervention, of course.”

Without elaborating on "no other intervention," Paul continued: "So, where does the [heat] in the boiling water... let's put it another way - the heat - transfer to?"

Wells: "On a vessel of boiling water?"

"Oh! That's inevitable," Paul said, "but eventually the vessel gets colder, so the heat doesn't end up staying there."

Wells looked at Burns, who just looked at him with a smile.

Wells thought again, "Air? Because the space near the boiling water heats up."

"Haha! It's exactly what I thought!" Paul shouted happily, "Yes, air. The air near the boiling water receives heat and then continues to transfer it to the air with lower temperature further away. Finally, the water and the air near it It’s getting colder and everything is going smoothly.”

"So, I think, if there is no medium near the boiling water - that is, everything on which heat can be transferred, including air, then the boiling water will not become colder?"

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"So..." Wells looked at the strange water bottle, which was made of two layers of glass. There was a small hole in the outer glass, but this small hole led to the mezzanine space between the two layers of glass. He somewhat understood the meaning. What is the main thing to do?

"Yes, I'm going to evacuate the air between the two layers of glass and create a... create a vacuum barrier."

Wells: "A vacuum?"

Paul nodded: "A space where there is no air and nothing. Well... at least there is nothing that we can see and perceive now."

Wells was used to the fact that the lord always added some confusing supplementary explanations when explaining something.

"Without the transfer medium, the heat will stay on the water in the bottle and the inner glass wall - this is what I deduced. Of course, there is still a little medium, after all, we cannot keep the two layers of glass from contacting each other at all. , but I guess it’s just like a thick pipe flows quickly and a thin pipe flows slowly. As long as there is less medium, the heat will dissipate slowly and the cold will slow down, so..."

Paul pointed to another object on the workbench, a piece of machinery Wells had never seen before.

"I commissioned Guy to build a device - an air extractor, or as you might call it - a vacuum pump."

Next to him, Guy Burns puffed up his chest proudly.