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"Well, you're right. But it's not easy to design such a reality. Maxwell said, "Do you think the problem has something to do with some characteristic of the aether that we don't yet know?" ”

After people realized the fluctuation of light, they began to think about what the medium of propagation of this fluctuation was, and people named this unknown medium "ether". But later, when the light wave turned out to be a transverse wave, and the light was up to 3o thousand kilometers per second, the ether became more and more bizarre in theory. Because of the propagation of such a high wave, it would take many times harder than diamond, but we usually live in the aether and never feel bound by such a hard thing. So scientists began to imagine what special properties this medium called ether needed, and how to find it through guò real yàn. Throughout the late nineteenth century, and into the early twentieth century, a whole lot of great physicists spent a lot of their energy on the ether.

When Scrooch studied physics, because of the influence of the theory of relativity, the ether and other things were already thrown into the garbage. Therefore, Scrooge's understanding of "ether" or something is much worse. And he also felt that it was far from the time when something like the theory of relativity came out, and the real foundation of physics was not enough to support it, and at the same time, it would not bring more profit to make such a former thing. To brush up on fame, the Maxwell-MacDonald equation is enough. As for the idea that a large number of physicists are going to go in the wrong direction, what does it matter?

"Ah, Mr. Maxwell, you know, I'm not a pure scientist, and honestly, I don't know much about 'aether' or anything. I'm afraid it's hard to come up with anything meaningful to build. And now my mind is full of how to prove the existence of electromagnetic waves and use them in my life. Scrooge said with a sincere look.

Compared to the authentic scientists, Scrooge is more application-oriented. Maxwell also knew this characteristic. So he didn't say much, but instead discussed with Scrooge how to design a real yàn to prove the existence of electromagnetic waves.

……

The slow "luxury express" takes a full twenty-eight hours to reach Cleveland. Scrooge felt that this trip was almost the most difficult trip of his life, and the difficult journey was even more difficult than the last trip to England in a clipper. Because you have to constantly discuss those headaches with Maxwell along the way. Most of the questions Maxwell asks are tricky and difficult. In addition, this guy didn't finish the discussion, and he almost didn't care about whether others could stand it or not. It felt like being facing a high math exam continuously. Scrooge felt his head get congested and swollen, and he even wondered if his head would burst open with a bang if he continued to discuss it like this (a tribute to Lucian, the headshot maniac).

Fortunately, with Anna by her side, she keenly realized that Scrooge was almost unable to hold on, so she kept interrupting them with various reasons, and finally even pretended to be a holy decree, claiming that old Mr. MacDonald had an urgent matter to find Scrooge. finally rescued Scrooge from the tiger's mouth.

"Thank you so much, Anna." Scrooge patted his chest very ungracefully, "Mr. Maxwell is terrible. No, I'll have to find a place to hide, and don't let Mr. Maxwell find me at night. Otherwise, I really can't survive. Well, Anna, help me to lie down in your box first, you don't need to call me for dinner, I really need to get some rest. ”

……

"Mr. MacDonald, get up and eat!" A small hand gently nudged Scrooge's arm. Scrooge opened his eyes and saw Anna sitting on the edge of the bed, and on the table beside him, there was a tray, presumably full of delicious food.

"Ah, what time is it now?" Scrooge took Anna's hand and sat up, noticing that the carriage was lit with candles.

"It's half past seven. Hungry, right? Get up and eat. Anna smiled gently.

"Mr. Maxwell didn't look for me, did he?" Scrooge still asked with some palpitations.

"Mr. Maxwell asked about you, and I said you had a lot of things to do with college preparations. So he didn't look for you again. Anna looked at Scrooge's look, forced a smile, and lowered her head in reply.

"Great!" Scrooge cheered, and he hugged Anna, "Thank you, Anna! Thank you! ”

Anna struggled slightly, but couldn't break away - Scrooge hugged him tightly. So she whispered, "Don't hurry up and eat, it's going to be cold!" ”

After eating, Anna silently packed up the dishes and took them out. After a while, she returned to her box and saw Scrooge still lying crooked on the bed in the box. So she walked over, sat down next to Scrooge, and reached out to stroke Scrooge's head: "Better, right?" Still tired? ”

"It's all right after a good night's sleep." Scrooge reached out and stroked Anna's hand and smiled.

"Then if I send you back, Mr. Maxwell shouldn't bother you again." Anna looked at Scrooge, her eyes flickering with the candlelight, under the yellowish glow of the candle.

"I'm not going, I'm not afraid of 10,000, I'm afraid of what happens. I'm here tonight. Scrooge muttered, like a little child.

"How? Old Mr. MacDonald lives in the box over there. Anna said.

"Don't be afraid, when my dad sleeps, he can't wake up with thunder." "My dad snores so loudly that my mom can sleep." It's okay. ”

"This ...... It's not ......," Anna hesitated. But Scrooge didn't give her any more time to hesitate, he grabbed his hand, and with a pull, Anna let out a soft cry and fell into his arms.

"Candle ...... Candle ......," Anna cried in a hurry, whisper......

……

At noon the next day, the train arrived at Cleveland Station, the group got off the train, then changed into a horse-drawn carriage, and it took another two hours to finally arrive at the destination of the trip, the University of Cleveland.

Cleveland University is built on a hill near Lake Erie, and along the gently rolling hills, there are various school buildings, including classrooms, libraries, dining halls, dormitories, and the large yàn room that worries Maxwell the most.

Most of the scholars who came with them went to two places, some went to the library, and some went to the real room. However, everyone is quite satisfied with the university, which is still under construction. Maxwell, in particular, was eager to ask his assistants to complete some of the backlog of real things with him after seeing the equipment in Dashi's room that was difficult to find before.

Scrooge also has a real yàn ready to be done here. In fact, this real yàn, Scrooge himself has done it a long time ago, and now he just wants to take advantage of the opportunity when Maxwell and others are here, and throw it out. As a result, Cleveland University has achieved epoch-making results even before it officially opens, which is bound to greatly enhance the prestige of this university. Second, with this practical foundation as the foundation, it won't be long before he can justifiably make money from radio communication things.

This real yàn is the famous Hertz real yàn. In the original history, Hertz designed a set of electromagnetic wave generators based on the principle that capacitors oscillate through the spark gap, and he connected the two ends of an induction coil to the two copper rods of the generator. When the current of the induction coil is abruptly interrupted, its induced high voltage causes sparks to occur between the spark gaps. In an instant, the charge oscillates between the zinc plates via an electric spark gap at a frequency of millions of cycles. According to Maxwell's theory, this spark should produce electromagnetic waves, so Hertz designed a simple geophone to detect this electromagnetic wave. He bent a short section of wire into a circle, leaving a small spark gap between the ends of the wire. Because the electromagnetic wave should induce a voltage on this small coil, the spark gap will produce a spark. So he sat in a dark room, and the geophone was 1o meters away from the oscillator, and it turned out that there were small sparks between the sparks in the spark gap of his current geophone. Hertz covered the wall at the far end of the chamber with a zinc plate that reflected radio waves, and the overlap of the incident and reflected waves should produce standing waves, which he also confirmed by the detection of geophones at different distances from the oscillator. Hertz first finds the frequency of the oscillator, and then uses the geophone to measure the wavelength of the standing wave, and the product of the two is the propagation degree of the electromagnetic wave. Just as Maxwell predicted. The degree of propagation of electromagnetic waves is equal to light.

Now, what Scrooge has to do is to copy this real yàn, this real yàn does not have high requirements for equipment, in the original history, when Hertz completed this real yàn, the real yàn equipment used was even made by himself.

Scrooge told Maxwell that after thinking about it last night (Anna almost laughed out loud when she watched Scrooge talk nonsense without changing her face), and then she didn't know what she remembered, and her face turned red all of a sudden), he came up with a practical scheme that could be used to prove the existence of electromagnetic waves. He discussed the plan stolen from Hertz with Maxwell, who immediately understood his train of thought and couldn't help but praise him as a genius.

By the next day, the equipment was ready. The two of them started the first scientific practice of this real yàn room in the big real yàn room. The result of the real yàn perfectly proves what is deduced from Maxwell's MacDonald formula: the existence of electromagnetic waves is proved, and the degree of electromagnetic waves equal to light is also proved.

Maxwell wrote a paper called "The Kinetic Theory of Electromagnetic Fields" as a paper on what he had achieved in the past few days, and after showing it to Scrooge, he wrote two names on the author of the paper: James? Clarke? Maxwell, Scrooge? Mcdonald.