Both of them were wearing the simplest white shirts and black pants, looking at the audience calmly and composedly. Their work was also delivered to the stage, a palm-sized tape recorder.
"What is that thing?" Chen Mu took a look and muttered.
An Huai: "It looks like a radio."
"Radio?" Chen Mu frowned. "What does the radio have to do with their work? They couldn't possibly have made a radio themselves, could they? That wouldn't be an invention, it's just a replica. Nothing new."
"Do you think Ji Yue will be unoriginal?" An Huai asked back.
Chen Mu thought of how Ji Yue had repaired the remote-controlled airplane in a few seconds last night, and remained silent. It was indeed unlikely. Such a direct replica work would not be able to enter the semi-finals.
"I want to see what Su Qingyun's work is?" In the audience, Tang Ling calmly held her hands with a sarcastic look on her face.
"Didn't she say that her work is no worse than ours? I've been looking forward to it for a long time." Zhang Xia also sneered. She has been waiting for it.
In the judging panel, the chief judge looked at the two tall and straight-limbed teenagers and nodded with a smile. They looked full of energy and spirit. That's how it should be. You must have absolute confidence in your work.
"Are you ready to begin?"
"We're ready." Su Qingyun and Ji Yue nodded in unison.
The presiding judge signaled the two to start. Yan Jun, who was sitting at the very edge, secretly winked at Su Qingyun and said, "Come on."
Su Qingyun smiled slightly and successfully received the signal.
"Dear judges and contestants, good morning. We are the eighth group of contestants, and I am Su Qingyun."
"I'm Ji Yue."
After the two briefly introduced themselves, they got straight to the point.
Su Qingyun smiled and pointed at the tape recorder that Ji Yue picked up and said slowly: "As you can see, our work is exactly this small machine in my partner's hand. You may think it is an ordinary radio, but in fact, we call it a tape recorder."
Tape recorder? This novel word immediately caused a commotion in the audience. Everyone had the same puzzled expression. What is a tape recorder?
Chen Mu and An Huai sat up straight, waiting for the next explanation from the two men.
"The tape recorder is a new device we developed based on the functions of a radio. In addition to having all the functions of a radio, its most notable feature is that it can record sounds and then play them back. Whether it's ordinary human voices or beautiful music, it can record and play them back perfectly. In addition..."
She didn't speak fast, but everyone listened attentively. As she explained, Ji Yue began to demonstrate the various functions of the tape recorder.
"As we all know, the working principle of a radio is to demodulate the high-frequency signal received from the antenna and restore it to an audio signal, which is then sent to the headphones to be converted into sound waves and finally played out. To put it simply, a radio is a small radio receiver."
"Those are the functions of a radio, but what we need to make is a tape recorder. The first problem my partner and I encountered was how to record the audio and how to store it. Later, we finally figured out that the working principle of a tape recorder is to use the magnetic effect of electric current to receive sound, while the playback is achieved through electromagnetic induction."
"After establishing these theoretical foundations, we began to experiment. During this process, we encountered various difficulties. For example, when it came to storing audio, I thought of magnetic tapes. Magnetic tapes have been around for decades, but they are rarely used in my country. We began to experiment with using magnetic tapes to store audio..."
Hearing this, Yan Jun suddenly realized. No wonder Su Qingyun asked them where to get the tape when they were at the research institute before. Fortunately, their research institute had that thing, and it turned out to be used here.
The deeper Su Qingyun's explanation, the more attentive the listeners became. At the judging panel, the experts kept nodding their heads. These two kids are great! They have ideas and abilities!
As for the other contestants, most of them didn't understand what she was talking about at all. They were confused and bewildered by the words about electromagnetic induction and magnetic head.
What the hell is going on? Are they really competing in the same competition? Why is there such a huge gap between them?
Chen Mu's eyes widened and he pricked up his ears not wanting to miss a word Su Qingyun said. An Huai also listened carefully. They both probably understood Su Qingyun's explanation, but it was because they could understand it that they realized how amazing they were. Is a work of this level, such as a tape recorder, really supposed to appear in a competition like theirs?
If this isn't a crushing defeat, what is? The two of them sighed in their hearts. Before it was their turn, they had already compared their own works with the tape recorder in their minds, and the difference was immediately apparent.
Tang Ling and Zhang Xia were dumbfounded. With their brains, they could not understand what Su Qingyun said at all. They only understood half of what he said and their hearts were pounding.
Zhang Xia swallowed, thinking back to what Su Qingyun had said before. It seemed that she really hadn't been so arrogant...
Su Qingyun spoke for more than twenty minutes before she finished. Ji Yue made a brief addition to her content. The two of them cooperated well and in an orderly manner, which was obviously something they had discussed earlier.
The entire explanation process was logically rigorous, well-organized, and ended perfectly.
After finishing their speeches, the two stood quietly on the stage awaiting the judges' comments. The chief judge praised them repeatedly, saying, "This is indeed a work that we noticed early on. You expressed it very well, and the whole work is very well executed. You have great ideas and the ability to turn your ideas into reality. I can say that the tape recorder is a very important invention."
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