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"Mr. MacDonald, are you here?" Mitchell, the head of the wireless communications project, greeted him first, followed by the high-spirited Thomas? Edison.

"Ah, Mr. Mitchell, how's the preparation? Can it be successful? Scrooge reached out first and took Mitchell's hand.

"Ah, Mr. MacDonald, the machine has been built, but we haven't had time to think about the appearance yet, so it still looks very stupid. As for whether it will succeed or not, you see, this thing has not been tested, and whether it will succeed, I don't know. ”

"Haha, I don't believe you didn't try it yourself." Scrooge smiled and said, "Mr. Edison, did you say?" ”

Scrooge suddenly asked Edison's head, which surprised Edison, who didn't know how to answer Scrooge, and could only look at Mitchell with that eye.

"Haha, seriously, Mr. MacDonald, we have experimented with short-distance communication, and it is quite successful, but the distance is only a few tens of meters. At such a distance, it is better for me to shout with my mouth than this, and this time we are going to carry out real long-distance communication with real significance. I don't know how it turned out. Mitchell replied.

"I think we're going to make it." Young Edison clenched his fists and said.

"You've already succeeded, haven't you?" "If you can succeed at a distance of tens of meters, it means that there is nothing wrong with the design itself." The rest is a question of how to improve. Tell me about the whole process of the real yàn. ”

"Yes, Mr. MacDonald." Mitchell begins to introduce the setting of the real yàn.

"We built three prototypes, two for communication and one for backup. We set up two planes on two hills about two miles apart near the school, and there were no obstacles between them to facilitate communication. At the same time, as for mutual coordination, we do it through the guò flag. The weather is nice today, so you should be able to see it clearly. ”

"Nice idea." Scrooge said, "Then let's go out and go to the real place to have a look." ”

A few men got into the carriage and headed for the hill outside the school. The hill was about a hundred meters high and covered with tall larch. Now, in early winter, the larch has lost its golden needles of autumn, leaving only bare branches. There was a snowfall a few days ago, and now the snow on the ground seems to have melted, but on the hills, there is still a remnant of snow, and in the sun, it reflects a dazzling white light.

The carriage stopped at the foot of the hill, and Scrooge and the others got out of the carriage and began to walk on foot towards the top of the hill. Edison was young and anxious to start experimenting, so he walked to the front in three steps and two steps.

"How's this lad?" Scrooge asked Mitchell.

"He's a nice guy, although the foundation is not very good, but he is smart, studious, and diligent. What's even more rare is that he has a broad mind and a rich imagination, unlike a guy like me, who is narrow-minded. What is even more rare is that he can always remember some requirements of industrial production and put forward many suggestions for improvement that is convenient for industrial popularization. And having such a cheerful and lively young man as him in the team also brought us a lot of joy. Mitchell said of his assistant.

"Well, smart and studious. These two points are enough, and there is actually the attribute of having a wide range of ideas and a lot of joy, which is also too ......" Scrooge thought silently, and couldn't help but smile on his face.

The hill was not high, and in the middle of the conversation between the two, they had reached the top.

The larches at the top of the hill had been cut down a few years ago, and new saplings had been planted, but they had not yet grown, and the unobstructed summit was a natural place to place the radio station. A wireless telegraph has been placed on an iron frame, and its whip antenna has been raised to the highest level. A herringbone ladder was erected not far from the antenna, and two small flags, one red and one yellow, were placed next to it, and it seemed that this was the place where the flag was played

"Where is the other machine?" Scrooge asked.

"Over there, Mr. MacDonald, on top of the hill over there." Edison replied, pointing to a mountain on the other side.

At this time, Pluto was very aware of the opportunity to hand over a telescope, and Scrooge held up the telescope and looked over there. He saw that on the top of the hill over there, there was a taller antenna, far higher than the larch.

"The top of the hill over there isn't as wide as it is here. So we just mounted the antenna on top of the pine tree. Maybe the signal will be better that way. Edison explained.

"Well, let's start real." It was very windy on the top of the mountain, and Scrooge was a person who paid attention to his image, and he usually wanted to be a little demeanor rather than temperature. I don't want to be like Mitchell, wrapping myself tightly with a dozen catties or even dozens of catties of cotton. As a result, although he was wearing the best fur, he was still a little cold because he was wearing too thin.

"yes, okay." Mitchell said, "Let's get started." Thomas, signal over there and ask them if they're ready. ”

"Okay!" Edison answered, and quickly grabbed the two small flags, climbed up the herringbone ladder, and waved the two small flags in the opposite direction.

Scrooge raised his binoculars and looked across the road, where he saw a man waving a flag on a large tree opposite.

"They said, 'Ready, let's signal over.'" Edison shouted loudly.

"This kid doesn't have good hearing. So always get used to talking very loudly. Mitchell whispered to Scrooge.

By this time, Edison had come down from the herringbone ladder, and he came to the wireless telegraph and began to shake vigorously a hand-cranked Pixie motor that was placed there. The newspaper man began to strike the electric keys rhythmically, and the sound of clicks spread out in all directions, and everyone stared at the newspaper machine closely.

The newspaper clerk stopped reporting and began to wait quietly for a reply from the other side. After a while, the rhythmic tapping of the sound steel was heard from the announcer. This is the reply from the other side, which shows that the wireless telegraph, the first official implementation of this communication tool that has greatly changed the world, has succeeded!

Mitchell was so excited that he jumped up and grabbed Edison, who was also excited, and jumped and jumped while laughing.

Scrooge smiled and stood aside, waiting until they were all excited before he spoke, "What signal did you send to them, and what kind of response did they give you?" ”

"The signal we sent them was 'Mary has a little lamb,' and the answer they gave us was 'a white snow-white fluff.'" Edison replied.

It's the lyrics of a popular children's song, so Mitchell and Edison used it as a signal to respond.

"It's interesting." "But when I interviewed them, I thought it would be best to tell them that our signal was 'cheering at something,' and the reply we received was, 'Look at the Star-Spangled Banner will always fly high.'" See what I mean? Saying this will be good for our business promotion. ”

The two lines Scrooge said are also the lyrics of the same song. But this song is much taller than "Mary Has a Little Lamb". This song is the lyrics of the American national anthem, "The Star-Spangled Banner." And Scrooge asked everyone to replace the two sentences in reality, not just for the sake of product promotion. Compared to Europe, the United States is considered a wild land, but in this wild land, one of the American people, our Scrooge? Mr. MacDonald, however, has used one great scientific and humanistic contribution after another to prove that the United States is not a wilderness, and that the United States is a member of the civilized world, even the best of it. Now, according to his theory (the Yankees will ignore Maxwell intentionally or unintentionally, and the British will also ignore Scrooge intentionally or unintentionally), there is a great Ming that is enough to change the world, and this Ming, the first signal from the American national anthem, what a moving story it should be, how exciting it should be. The story was destined to circulate throughout the United States, and Scrooge was sure that many years later American elementary and middle school textbooks would use it to inspire patriotism among children. And Scrooge in this story? Mr. MacDonald's body must have been covered with a halo of sacredness.

"Mr. MacDonald, this machine is not mature enough, and its transmission distance is still very limited compared to the cable telegraph." Mitchell said, "Now this machine is still a certain distance from real practicality. ”

"I know that." "With the pitiful power of such a Pixie motor, this machine can guarantee a maximum of four to five miles of communication distance." However, with a large battery pack, a larger antenna, or an improved motor, we can definitely make it communicate farther and farther away, and maybe it won't be long before we can even communicate directly with the Euro 6 through wireless communication. ”

"Mr. MacDonald," said Edison, suddenly, "you speak of improving the motor, and I happen to have a new idea. ”

"Oh? Tell me about it? Scrooge looked at Edison with interest, and only followed Edison, who had studied mathematics and electromagnetism at the University of Cleveland for a few months, to have a new idea?

"The magnetic force of my current electromagnet is much higher than that of natural permanent magnets, and if we replace the permanent magnets in the motor with electromagnets, maybe the efficiency of electricity will be much higher. And the Pixie motor rotates a magnet, so I think it would be more convenient to change it to a rotating coil. Edison replied.

"Very well, I will allocate a sum of money to you through the Guò MacDonald Venture Bank to research this project, and if it is successful, you will also get a part of the patent income. What do you think? Scrooge hurriedly said.

"Okay, thank you, Mr. MacDonald, you've been so kind." Edison said gratefully.

"A pervert is a pervert!" Scrooge thought to himself, "This design change was done by Siemens in the original history, and it was one of the things that later started with Siemens. Originally, I planned to get it out in a year or so, but I didn't expect that now, because I brought Edison to learn electromagnetism, he actually came up with this design concept. A metamorphosis is a metamorphosis. Fortunately, at least temporarily, he is still a pervert on our side. Scrooge thought.