On the last Friday of April in the year 827, the thirty-first floor of the Allyn magic tower was crowded and noisy.
"I'm afraid that this is the place with the highest density of official sorcerers …" Heidi joked with Katrina, Annick and the other students in the crowd.
Because Lucien Evans, 'Atom Controller', was going to hold a public class on the microscopic domain this morning, most of the sorcerers were seething and looking for any opportunity to attend it. As a result, the leadership of the Holt Magic College had to issue a restriction: the teachers and students of the college were free to choose whether or not to attend the class, and the sorcerers outside, whether they were junior rank, middle-rank or senior-rank, were qualified to attend the class according to the order of their registration.
Sprint frowned at Heidi. "Why did you ask us to come here? If you have any questions, you can ask our teacher in private. "
Heidi chuckled. "It's been a long time since I experienced our teacher standing on the podium. How can I miss this opportunity?"
Led by her, most of the arcanists of the Atom Institution had part-time jobs in the Holt Magic College and gave back to the society what they had been treated by their teacher.
"Yes, I miss the leisurely life in the magic school." Layria followed Heidi into the classroom.
Prospell, the tower guard, had activated the magic circles on space folding temporarily. Therefore, the classroom was so spacious that thousands of people could sit inside.
Unable to think in such an environment, Annick explained for Heidi's whim, "Such an opportunity is indeed hard to come by. Normally, our teacher wouldn't have sorted out the content from the beginning and talked about it as a whole, which would help us grasp the omissions. Look, Mr. Gaston, Ms. Isabella, Mr. Larry, Mr. Dieppe, Mr. K, Ms. Samantha, Ms. Rachel … They're all here."
He was going to recite the names of all the sorcerers that he knew, but he soon discovered that it was even more troublesome than studying the microscopic domain.
"Yes, yes, yes. Annick said exactly what I can't express." Heidi borrowed Annick's words without shame and led everybody to their seats.
Katrina exhaled softly. "I wonder what the teacher will be talking about today?"
She, Layria, and the rest of them were dazzled by the development of the microscopic domain. They felt that they had to try their best to catch up. If it weren't for the solid foundation that Lucien had established for them, they probably wouldn't have been able to keep up with the top arcanists of the microscopic domain.
"This is an open class for all teachers and students. Mr. Evans definitely won't go too deep into it. It should be a comprehensive analysis for everyone to understand." Alfalia had been in the Atom Institution for almost four years. Her arcana level and her magic strength had soared, but even so, she knew very little about the microscopic domain. She was in desperate need of such a comprehensive review to help her grasp it.
Sprint, on the other hand, asked expectantly, "Do you have any new theories, master? A new theory that solves the uncertainty of microscopic particles? "
"I don't think so … That's the greatest mystery in the microscopic domain. It may represent the truth of the world." Annick shook his head. "According to our teacher's belief, probability and uncertainty are the intrinsic properties of microscopic particles, not the unavoidable perturbations caused by measurement. So, if we can find out why microscopic particles have such intrinsic properties, it means that we will truly understand the microscopic domain."
Heidi sniffed. "Our teacher's explanation is almost irreconcilable with determinism. No wonder the arcanists of the school of astrology such as Ms. Isabella and Ms. Samantha are here for a public class."
In the humming of conversation, Thompson, the vice-principal of the Holt Magic College and a member of the Affair Committee, walked in. He pushed the gold-rimmed glasses on his nose and said, "Silence."
With the help of the magic circles, the crowded classroom immediately fell silent.
"Now, I'll give the time to Mr. Lucien Evans. He will explain the mysteries of the microscopic world to us." Thompson knew that he would be attacked by magic if he talked nonsense at such a moment, so he said concisely.
Then, Lucien, who was wearing a black double-breasted suit and a bow tie of the same color, walked in from the side door. He took off his top hat and put it on the desk.
"Your time is precious. Let's get to the point. The study of the microscopic domain has to start with the war between waves and particles of light. Only in such a way can we understand the specialties of other microscopic particles … "Lucien said peacefully, starting from the classic wave experiment of light and then slowly talking about the confirmation of the particle nature of light.
It was the content that the sorcerers were very familiar with and had a deep understanding of. Therefore, nobody could not understand it. Soon, they were integrated into the rhythm of Lucien's lecture.
… The discovery of cathode ray, the confirmation of electrons, the exposure of the internal structure of atoms, the confirmation of protons, the proposal of new alchemy … The wave-particle duality that extended from light to all microscopic particles, the reality that many experiments in the microscopic domain did not conform to the previous models, the ideas of matrix mechanics, the interpretation of the wave function, the debates caused by the interpretation and the wave-particle duality, and the opinions held by different grand arcanists and senior-rank arcanists were clearly displayed in the minds of the listening arcanists as Lucien talked about it.
The calculations and content that were not too complicated gave them a comprehensive understanding of the microscopic domain. Fascinated by the amazing domain, they forgot the passage of time.
"Mr. Evans is truly fair. He explained all the different interpretations and even analyzed why there was a disagreement. He was not arrogant at all, as if his theory was absolutely correct and the other theories were not worth mentioning." Dieppe nodded in agreement in his heart. Having made so many achievements at such a young age, Mr. Evans' attitude towards arcana was definitely not a problem.
Without them knowing it, Lucien finished his overview and looked at everyone with a smile. "This is the first part of the lecture. Here, I would like to remind you that, although I tried to avoid the sophisticated mathematical knowledge in the lecture just now, you must remember that in the microscopic domain, we can and can only rely on mathematics and experiment results."
Heidi and the rest of the arcanists of the Atom Institution were not surprised by Lucien's emphasis, because it was what their teacher had told them many times. The other arcanists who had not received Lucien 'education nodded. They knew the importance of mathematics very well, but they did not understand why it was emphasized so much.
Lucien looked around and said solemnly, "The microscopic domain is a world that we cannot see with our naked eyes. All our methods of observation will inevitably affect it and lead to all kinds of unbelievable phenomena. Faced with those phenomena, there will be different interpretations and different theoretical models, but they all seem to be reasonable."
"But what I'm saying is that, in the microscopic domain, in the fields where our past experience cannot be copied, and where habitual approaches may deviate, all the explanations and theoretical models must be based on mathematical foundations. Other than that, they are not explanations or conjectures, but fantasies!"
"Mathematics will not deceive us …" Neeshka said in a low voice. Lucien's aura and his words had left an unerasable mark on him.
Lucien's solemn attitude alerted most of the arcanists and left a deeper impression on them about the importance of mathematics in the microscopic domain.
"I believe that you all have doubts about the wave-particle duality of electrons, about the ubiquitous cloud of probabilities that pervades space, and about whether or not it can pass through two gaps in two bodies …" Lucien suddenly brought up the question.
Most of the arcanists nodded. It was the most difficult and controversial question so far. Annick and the other students of Lucien, however, all widened their eyes. According to their understanding of their teacher, it could not be so simple!
"Master, are you ready for the double-slit experiment?" After a brief silence, Heidi quickly remembered the project that her teacher was busy with. It would be an important test of the wave-particle duality of electrons!
Annick and Sprint were no longer interested in talking with her. They stared at the podium attentively, waiting for their teacher's next words with their hearts pounding.
Lucien paused for a long time before he said, "Take a five-minute break. Then, I will demonstrate the double-slit experiment."
"What?" Exclamations of shock echoed in the classroom at the same time. Demonstrating such an important experiment on such an occasion?
After the shock, they soon became excited. Were they going to witness history? Were they going to witness a miracle?
Lucien ignored them and took out a common metal plate. There did not seem to be any gaps on it. Or rather, the gaps were so small that they could barely be seen.
"With such a small gap, even a Legendary-level spell would take a few months to complete the carving." The arcanists whispered to each other. Some of them asked their teacher to come and watch. They believed that the archmage would not be stopped.
Lucien took out alchemical devices one after another and soon established a platform to verify the double-slit experiment. In the meantime, Lucien projected the image of the sensor screen with other magic circles and enlarged it on the wall.
At this moment, Brook and Oliver, the two grand arcanists, arrived. They were not surprised that Lucien completed the metal plate for the double-slit experiment earlier than they did. After all, he was an expert close to level three of legendary and the unquestionable authority in the microscopic domain.
They could've waited for the final result of the experiment, but their pursuit of arcana and truth made them stand in the classroom without caring about their identity, hoping to witness it as soon as possible.
After dozens of seconds, Douglas, Fernando, Hellen, Hathaway, and many other legendary sorcerers and archmages arrived.
Lucien lowered his eyes and covered his pupils. Then, with an inconspicuous bitter smile, he opened his eyes and walked to the experiment device. "Now, we will begin the double-slit experiment."
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