Chapter 457: Completely Conquered
"Professor Xu, what method did you use to conduct the seabed survey?"
Soon, Tang Zhen noticed that Xu You's computer not only showed data on the depth of various sea areas, but also some three-dimensional models.
These models are three-dimensional maps of the geological structure of the seabed.
You should know that it is absolutely impossible to achieve such results by relying solely on the ultrasonic positioning system.
"Professor Tang, I use electromagnetic waves." Xu You replied indifferently.
"Electromagnetic waves? How is this possible!"
Upon hearing this, Tang Zhen immediately expressed his disbelief.
Not to mention a professor who is professionally responsible for exploration, even a middle school student would probably know that the energy of electromagnetic waves dissipates extremely quickly in water.
The high salt content in seawater makes it even less suitable for electromagnetic waves to propagate.
Xu You's response to Tang Zhen was also completely within the medical treatment.
"Professor Tang, most electromagnetic waves are naturally not suitable for propagation in seawater. But in fact, the attenuation of some electromagnetic waves under seawater is not that serious."
After hearing what Xu You said, Tang Zhen reacted immediately.
"I know, it must be an extremely long wave! Theoretically, the longer the wavelength of an electromagnetic wave, the less it will attenuate in water. Many submarines use extremely long waves to transmit information underwater!"
After the excitement, Tang Zhen suddenly remembered something.
"But, Professor Xu, the extremely long wave transmitting equipment should occupy a large area. Even a submarine cannot carry such a large transmitting equipment. The extremely long wave transmitting equipment can only be built on land. The equipment you just used should not be able to transmit extremely long waves."
Tang Zhen is indeed a very professional industry expert and he quickly discovered the problem.
Because the ultra-long wave and extremely long wave transmitting equipment is very large, it occupies an area of several square kilometers.
It is naturally impossible to install such a huge equipment in a submarine.
However, this method can only complete one-way information transmission between land and submarine.
"That's right, Professor Tang. I have also considered the idea of using extremely long waves for marine exploration, but I rejected it because the transmitting equipment was too large. In fact, the type of electromagnetic wave I use is a special kind of laser."
"Laser?" Tang Zhen asked in surprise.
"Yes, laser. One of the greatest features of laser is that its energy is extremely concentrated. Through experiments, I have indeed discovered that some lasers can propagate ."
As he spoke, Xu You displayed various relevant theoretical formulas on the computer and explained the theoretical basis to Tang Zhen.
“This is a really complete and novel theory!”
After listening to Xu You's detailed explanation, Tang Zhen couldn't help but sigh.
Theoretically, these lasers in specific frequency bands can indeed propagate over 100 meters on the seabed.
"Well, according to these theories, blue and green lasers can propagate hundreds of meters or even kilometers in seawater. Of course, this is only a theoretical limit. In reality, due to various factors, the propagation effect will definitely not be so ideal, but two or three hundred meters is no problem."
At this moment, some questions suddenly arose in Tang Zhen's mind.
"Professor Xu, when did you come up with these experimental results?"
Only a few days had passed since the last project team meeting.
It was really hard for Tang Zhen to imagine that in just a few days, Xu You could complete this huge series of tasks, from conceiving the project, to conducting multiple sets of experiments, screening out specific electromagnetic wave frequency bands, and then making experimental equipment.
Xu You also sensed Tang Zhen's doubts from his tone.
"It's like this, Professor Tang. Although my main research direction is condensed matter physics, when I first started doing scientific research, I was studying quantum optics in quantum physics. I have done quite a lot of research on light, so I had already completed these experiments before I came here."
"I see. No wonder everyone says that you, Professor Xu, are a cross-disciplinary talent and they specially invited you to the project team as a special consultant. As expected, there is no problem that can stump you, Professor Xu."
In less than an hour, Xu You completely conquered Tang Zhen.
"Don't worry, Professor Tang. We haven't compared the data measured by the new equipment with the actual data yet. Moreover, this equipment is just a test product, and it will definitely need to be further optimized in the future."
After processing the data, Xu You and Tang Zhen compared the data together.
This contrast was so good that Tang Zhen was so surprised that he kept praising it.
"Professor Xu, the data measured by this experimental equipment is so accurate! Compared with the previous positioning system, the accuracy is several times higher!"
"Well, when I designed it, I added a secondary positioning system to further improve the accuracy of the measurement. Of course, in addition to this, electromagnetic waves can also transmit more information than sound waves. For example, we can also detect the specific composition of the seabed geology through this device."
As he spoke, Xu You operated the software in the computer and opened another interface in the software.
Then, based on the reflected electromagnetic waves obtained by the equipment, a simulated 3D seabed structure map appeared on the screen.
"How...how on earth was this done?"
Seeing Tang Zhen's surprised expression, Xu You smiled and said:
"When electromagnetic waves come into contact with different material structures, the reflected electromagnetic waves will show different changes in data in various dimensions. As long as the characteristics of these data can be accurately analyzed, theoretically, a structural map of the seabed can be obtained."
"It is theoretically possible, but I still find it incredible. Can we get such detailed information based on just some data?"
But after comparing the data, Tang Zhen had no choice but to believe this fact.
The seabed geological structure map obtained through data received by the detector developed by Xu You is indeed very close to that obtained through field marine surveys.
Faced with the irrefutable facts, Tang Zhen no longer had any doubts.
"Professor Tang, in fact, as long as we understand the differences in the electromagnetic waves reflected back by these lasers when they encounter different substances, then it will not be so difficult to understand marine exploration through electromagnetic waves. Of course, it is not enough to rely solely on the reflected data. The processing of the data is also very important. So far, the entire detection system is not so ideal, and I still need to make some optimizations later."
"Professor Xu, isn't this ideal enough?" Tang Zhen asked in surprise.
