Greetings, Mister Principal

"The sandwich is so delicious."

Claire felt the rich gravy scent between her lips and teeth, and the taste brought by the mixture of fresh vegetables. She couldn't help making a pleasant sound.

In the end, she still surrendered to the alluring aroma, asked for a sandwich from Reiner, and then immediately immersed in the wonderful food, unable to extricate herself.

But soon, Claire noticed Reiner's ambiguous gaze, and immediately turned her face away, and said in a somewhat vague tone.

"Don't get the wrong idea, I just want to learn how to make this sandwich, so..."

Reiner heard Claire's lame explanation, smiled, and did not reveal it. He turned to look at Sharon.

"Miss Sharon, what do you think of the paper?"

When Sharon heard Reiner calling her name, she raised her head. She was still holding Reiner's paper in her hand. After thinking about it for a while, the girl answered.

"The points stated in the paper are very clear, and the relevant proofs are also very comprehensive. To be honest, I can't believe that the experiment inside is the one I did before."

After a pause, the girl continued.

"But one thing I don't quite understand is the content of the penultimate chapter."

Flipping open the thesis, Sharon pointed to one of the pages. The title here reads "Chapter 4: Investigation of The Changes of Mass in the Process of Experiments". In this chapter, Reiner focused on the basic ideas of the law of conservation of mass. In Sharon's view, it was really difficult to understand.

Prior to this, Sharon had never considered the changes in the mass of the object before and after the experiment, nor did she understand the value of discussion.

Because in her concept, it was natural that the mass would not change, but after Reiner mentioned it, Sharon realized that there seemed to be another mystery.

"Why does the total mass of the substance before and after the reaction not change when a substance becomes another substance after being burned? And from this experiment, it seems that the mass has been transferred from Grey Stone to White Stone and this special gas. How is this achieved?"

Hearing Sharon's question, Reiner nodded slightly.

This girl was really good at alchemy, and she realized the problem so quickly.

"Are you trying to say, is there a carrier for mass?"

Reiner asked. What he asked surprised Claire.

In Master Hohenheim's alchemy theory, mass was an inherent attribute of an object, which represented the amount of elements contained in an object. In his view, elements had a uniform mass. The more elements contained in an object, the greater the mass. The mass of an object per unit volume was called density.

For example, rock and metal had different densities because of the amount of earth elements. In a unit volume, there were more earth elements that made up iron, but less earth elements that made up rocks. This was the fundamental difference between the two as different substances.

But in Reiner's thesis experiment, part of the mass of the Grey Stone obviously went to the special gas, which seemed to involve the transformation of elements. After all, according to common sense, the earth element should be heavy and stable; it was different from the light and flowing wind elements.

But Master Hohenheim had long asserted that the four basic elements were the most basic forms of objects, and they couldn't be transformed into each other. All other substances were condensed from the four basic elements.

If they really found a way to transform between the elements, it would be a shocking discovery.

Even if flowing water could turn into steam after heating, the mages have long understood that those were not real gases, but little water droplets that could not be observed with the naked eye. The real elemental transformation has not been achieved yet.

Looking at it this way, that special gas was a new substance formed by mixing earth elements and wind elements?

It was truly strange.

Because Reiner's argument seemed to say that the basic elements were not really "basic", and they could be further subdivided. It was completely contrary to the current alchemy theory.

When Claire was lost in thought, Sharon shook her head slightly.

"I don't know. Just relying on this experiment, I don't think I can find decisive evidence yet."

After all, in the experiment of heating Grey Stone to generate White Stone, the matter was not completely transformed, and nothing was created out of thin air. In the absence of the clear composition of the gas, it couldn't be said that that special gas must have escaped from the Grey Stone. They needed more direct evidence.

Alchemy has always been an experiment-based discipline. Any theory may be overturned by special experiments. However, on the other hand, if it could not be reproduced by experiments, all conjectures would be meaningless.

"I also think that perhaps the four basic elements are not the most basic substances. For example, water may be a combination of certain substances. Of course, these are all conjectures. I may find opportunities to do some experiments to verify them soon."

Reiner pretended to be helpless. Although he had many methods to prove that water was actually a compound, it seemed too arrogant to put it forward. After all, the first paper was inspired by Sharon's experiment. The second subversive paper would be suspicious if it was presented so soon.

He also needed to wait for his paper to be fermented in the academic world, and everyone started to change their ideas, before proceeding step by step. Although there may be accidents; for example, a certain academician would probably be inspired by Reiner's paper, and discovered that water was a compound, it was better than Reiner being caught and studied by other people.

"Do you already have ideas, Mr. Principal?"

Sharon was a little surprised. They didn't even dare to think about those questions in the past, but the good-for-nothing principal in front of them had already started to think about experimenting with them. Was he a genius or a mad man?

"I haven't thought of anything specific, but I do have a general direction."

Reiner decided to end this topic. The first paper has not been published yet, so he didn't want to think about long-term issues.

"Let's not mention this at this moment. Professor Claire, I need to leave school tomorrow, you will need to come with me."

"Ah?"

Claire obviously hadn't recovered from the discussion just now. She only reacted when she heard that Reiner called her.

"Where, where are we going?" She asked in hesitation.

"Didn't I say it before, we need to find an alchemy workshop that could produce Cola."

Reiner responded, and looked at Claire pityingly as if he was looking at someone who had a bad memory.

"Uh, I, of course, I remember, I mean, where are we going to find the alchemy workshop?"

Claire hurriedly concealed. The embarrassing appearance was rather pitiful.

"Here."

Pointing to a simple map spread out on the table, Reiner smiled