Open an aircraft carrier to fight against Japan

Zhang Yi worked on the computer on one side for a while, and a gentle curve appeared on the screen. Lin Yuan couldn't help but said, "Can you tell me, what are you doing now?"

Zhang Yi said with a smile: "What I'm doing now is very simple. I'm launching electromagnetic waves on ice flakes."

Lin Yuan pointed to the gentle curve on the computer and asked, "What is that curve?"

Zhang Yi replied: "The time-frequency map, there is an electromagnetic wave receiver in my microwave oven, if the electromagnetic wave receiver receives electromagnetic waves, it will be displayed on this map."

Lin Yuan thought for a while and said, "You emit electromagnetic waves at the ice flakes, but you have to look at the time-frequency diagram of the received electromagnetic waves. Do you want to say that the ice flakes reflect electromagnetic waves?"

Zhang Yi smiled mysteriously, shook his head and said, "What ice flakes can do is not as simple as reflecting electromagnetic waves, so pay attention."

Lin Yuan then looked at the curve on the screen, and saw that the curve gradually fluctuated, forming a parabolic shape and gradually rising. A series of numbers jumped above the curve from time to time, which was the electromagnetic wave received by the electromagnetic wave receiver. exact frequency value.

One minute later, Zhang Yi pressed a switch, and the "buzzing" sound of the microwave oven stopped, and the curve also ended. Lin Yuan looked at Zhang Yi and asked, "What did you do?"

"I turned off the microwave oven and stopped emitting electromagnetic waves." Zhang Yi said while fiddling with the printer next to him. A piece of printing paper came out from the paper outlet. Zhang Yi picked up the paper and handed it to Lin Yuan. He smiled and said, "Look, this is the time-frequency diagram of the electromagnetic wave I just emitted, compare it with the one on the computer, and see if you can find anything."

Lin Yuan couldn't figure out what Zhang Yi meant, so he picked up the piece of paper suspiciously, and saw ten dots marked on it, basically every six seconds, and the frequencies were 1000 MHz, 2000 MHz, and 3000 MHz. Hertz, in increments of one gigahertz.

Lin Yuan looked at the screen again, and was stunned for a moment, because on the screen, the data of the electromagnetic wave frequency at the same time point was - 1100 MHz, 2100 MHz, 3100 MHz... Each received frequency was higher than that of Zhang Yi. The transmission frequency is as high as 100 MHz.

Lin Yuan's face was full of astonishment, Zhang Yi smiled and said: "I believe you have already seen that the electromagnetic wave received by the electromagnetic wave receiver is [-] megahertz higher than every electromagnetic wave I emit, which means After the ice sheet received the electromagnetic wave, it analyzed its frequency, then increased the frequency by [-] megahertz, and re-emitted the electromagnetic wave."

"What... what's going on here?" Lin Yuan was so surprised that he couldn't speak clearly. He thought that the ice sheet was just a storage device, but he didn't expect the ice sheet to have intelligence.

Zhang Yi spread his hands, "I don't know what's going on, I guess, the ice sheet is intelligent, it is trying to communicate with us, but it increases the received frequency by [-] megahertz, what's the matter? an exchange."

Lin Yuan couldn't figure it out either. Everything about the ice flakes and the ice wall civilization was far beyond his cognition. He felt like a preschool child in front of the ice wall.

Zhang Yi sighed, and said, "Didn't you say that Bingbi tested your brain and found a way to communicate with you? Why doesn't this ice sheet have that ability?"

"The ice sheet must not have that much energy. It is too small. The original ice wall is much larger, and the accumulated energy must be much larger."

Lin Yuan stopped talking after finishing speaking, and Zhang Yi couldn't say anything. The two of them faced each other in silence for a long time, and then Lin Yuan said: "Since the borneol is intelligent, why don't we send more electromagnetic waves to it, and then get it from it?" Find a pattern in the echoed electromagnetic waves?"

"I have already used this method, but the ice sheet seems to only add [-] megahertz. No matter what frequency I emit electromagnetic waves to it, it will add [-] megahertz and then send it to me."

Lin Yuan thought for a long time, and suddenly he had a flash of inspiration, and said, "If you emit electromagnetic waves to the ice sheet, it will add [-] megahertz. What about emitting sound waves?"

"Sound waves?" Sound waves and electromagnetic waves are two completely different types of waves. Zhang Yi has only sent electromagnetic waves to ice flakes before. As for sound waves, he has never sent them.

Zhang Yi hurriedly said: "I'll send sound waves to the ice sheet right now."

Zhang Yi turned on the microwave oven, took out the ice flakes, walked to a huge platform, opened a clip on the platform, clamped the ice flakes in it, and clicked on the operation panel for a while, and a crisp sound came out from the platform. Speech is sound waves, and when a sound wave generator emits sound waves, people can hear them.

There is also a sound wave receiver on the platform, and the time-frequency curve of the received sound wave is displayed on the screen. Lin Yuan's eyes are fixed on the screen, waiting for the curve to change.

The frequency of the sound wave emitted by the platform is constantly changing, and the pitch is getting higher and higher. According to the experience of receiving electromagnetic waves just now, the ice sheet should have reflected the sound wave back at this time, but this time, the ice sheet is indifferent in the sound wave, and there is no change on the screen. .

After 1 minute passed, Zhang Yi stopped the sound wave emission, turned back and asked Lin Yuan: "Did you receive the sound wave?"

Lin Yuan shook his head, his face full of helplessness, Zhang Yi smiled wryly, walked over to pick up the ice sheet, shrugged his shoulders, "It seems that our attempt failed."

"It can't be considered a failure. At least we know that ice sheets don't reflect sound waves." Lin Yuan was talking, and turned his head inadvertently, and suddenly found that the curve on the screen that had just received electromagnetic waves seemed to be longer for a while, as if it was receiving electromagnetic waves again. to electromagnetic waves.

Lin Yuanyang pointed at the screen and said, "Your microwave seems to be receiving electromagnetic waves again."

"Really? It's also possible that I didn't turn off the receiving device just now." Zhang Yi walked to the screen while talking, glanced at the screen, and suddenly exclaimed: "My God, the ice sheet actually emits electromagnetic waves, responding our sound waves."

The hairs all over Lin Yuan's body stood up suddenly, "What did you say?"

"Look at the electromagnetic waves we receive. The frequencies are 50 Hz, 140 Hz, and 280 Hz. Don't you see anything at such frequencies?"

"Should I see something?" Lin Yuan couldn't understand Zhang Yi's meaning at all, 50, 140, 280, these three numbers are not even a sequence. (If you want to know the story behind the "aircraft carrier", please log on to the Canghai WeChat public platform, search on WeChat - qietingcanghai, just listen to Canghai's pinyin, reply 2 to watch, reply 3, you can watch the five crazy creative inventories of "Carrier" , if you have any comments, you can also leave a message directly on the public platform.)