Chapter 80 The Whole Earth Is Hiding
The programming issue lasted until Friday of this week, and Banxia really couldn't handle it, so Wang Ning asked a friend to invite a communications expert from Huawei.
When the expert saw the code written by Bai Zhen, his facial features wrinkled.
"As far as I can remember, I saw that thing once when I was very young. It was getting dark and too far away, so I could only see a blurry shadow." The girl's voice came from the headset. "It was crawling upstairs. It had very long legs, like a big black spider. The teacher said it came from the moon."
"Black Moon? OVER."
"Yes, it is the Black Moon," said the girl. "They only appear after the Black Moon falls."
"What is the reason for the arrival of the Black Moon?" Bai Yang sat on the chair, holding a pen between his fingers, frowning, "It can't be that it suddenly appeared out of nowhere, right?"
Although it is crucial to find the cause of the doomsday disaster, no one can say for sure whether this cause can be influenced and changed by humans.
What if the Black Moon discovered the Pioneer or Voyager probes?
Do humans have the ability to capture Voyager now?
Going further, what if the existence of humanity itself is discovered by the Black Moon?
Is it possible that humans have the ability to hide such a huge earth?
The question is a question, but there may not be an answer. If the natural disaster has reached a point where it is beyond human control, then even if it can be predicted in advance, the only thing people can do is to minimize the losses. Whether it is an earthquake or a tsunami, although it cannot be resisted or prevented by human power, at least people can be notified to evacuate and run away - but when the moon falls, where should people run?
Run to outer space?
Those three years are definitely not enough, three hundred years would be about right.
"Let's think of a way to hide the Earth." Bai Yang said, "Miss, do you have any good ideas? OVER."
"Eh?" The other end was stunned for a moment, "What do you mean?"
"It means hiding the entire Earth so that Black Moon can't find us." Bai Yang said casually, "If it can't find us, won't we be safe? OVER."
"Then...then cover the earth with a black cloth?"
"Where can you find so much black cloth?" Bai Yang laughed. "The earth's surface area is 500 million square kilometers, and you want to use 500 million square kilometers of black cloth. This is more outrageous than putting a lid on the Pacific Ocean. OVER."
That being said, the concept of "hiding the Earth" gave Bai Yang a second thought - what if, I mean what if, people could find out the real reason for the arrival of the Black Moon, and how the Black Moon found the Earth, maybe this is really a method? How did it collect specific information about the Earth? Then people would try to eliminate this information, cut off the path of information transmission, and hide the location of the Earth -
This sounds incredible.
Just like how the British used lights to fake cities at night and mislead German bombers during World War II, using the same idea, humans can carry out strategic camouflage and misleading on an unprecedented scale!
Hide the entire earth.
If the Black Moon is observed from Earth through visible light, then people would hide themselves in the visible light band.
If the Black Moon observes the Earth through infrared light, then humans are hiding themselves in the infrared frequency band.
Prescribe the right medicine for the right disease and aim at the right target.
Bai Yang thought so.
Although it was difficult for him to imagine what kind of God-given project it would be to hide a huge sphere with a radius of 6,370 kilometers, make it disappear from the eyes of the Black Moon, and play a life-and-death game of hide-and-seek on a cosmic scale - but this was a possible way to solve the problem. The future had proven that humans would undoubtedly lose in a head-on confrontation with the Black Moon. Since they couldn't win, could they not just hide?
Bai Yang decided to send this idea to Zhao Bowen and let him think about it.
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at the same time.
Separated by a wall.
Wang Ning and Bai Zhen are still working hard on the code. This afternoon, a communication expert from Huawei took time out of his busy schedule to visit them. The latter is an old classmate of Wang Ning's old classmate. He happened to be on a business trip in Nanjing recently. He came to help when he heard about the need.
After looking at Bai Zhen's code, he commented tactfully that no matter how much shit there is, it can never form a mountain of shit.
So the professionals took action personally, and with their energy sinking into their dantian and their long energy piercing the sun, they easily laid the foundation for the first solid, anal fissure-level hard feces in the shit mountain.
The expert left after the task was done, without charging any fees, as if nothing had happened. He waved his hands and said that we were all friends, and it was just a small favor, so no money would be charged. He said he had other things to do, so he would leave first and see us later.
Bai Zhen looked at the man's back and sighed, "If I had been admitted to university back then and was working at Huawei today, I would be as cool as him."
Wang Ning said that with your grades of repeating the previous grade, you still want to take the college entrance examination.
Next, the two rolled up their sleeves and worked all night long to continue building a complete image transmission link on the second-hand 725. The expert mastered the basics, the integrated development environment, and the compiler. Bai Zhen praised him for being an industry expert and his code was written like Marquez's "One Hundred Years of Solitude."
Wang Ning said, "You mean the level is as high as "One Hundred Years of Solitude"?
Bai Zhen said that he couldn't understand it just like "One Hundred Years of Solitude".
The next big challenge facing them was the transmission rate.
"How fast can this thing go?" Wang Ning patted the black casing of the radio.
"We use AFSK, so the speed may not be fast enough," Bai Zhen said. "I estimate it to be around 800 to 1000 bps."
"How did you calculate that?"
"Based on the frequency of sound, we convert all data, whether it's images or codes, into sound for transmission, but the frequency of sound has a limit. The normal frequency of sound that the human ear can hear is only 20,000 Hz, so the working range of the sound card is also within this range." Bai Zhen replied, "Theoretically, the transmission rate of digital signals cannot be higher than its intermediate frequency, which is 10,000 Hz, 10kbps."
"10kbps, 10,000 bits per second..." Wang Ning calculated in his mind, "How much is that in kB? Divide by 8?"
"Divide by 10." Bai Zhen said, "10kbps is equivalent to 1kB/s, which is one byte per second. But this is a theoretical value and the maximum speed."
"1kB per second or the theoretical maximum speed?"
"Yes, 1kB per second is already an unattainable theoretical value. In actual engineering practice, a speed of 1000bps is considered good." Bai Zhen nodded.
"A speed of 1000 bps..." Wang Ning calculated, "0.1 kB/s? 100 bytes per second? 100 B?"
"Well, 100B per second." Bai Zhen said, "This is the speed of data transmission."
Wang Ning knew that video transmission was impossible. At this speed, it was difficult to watch pictures or even read novels. It was like returning to the dial-up Internet era.
"AFSK is like this." Bai Zhen said, "If conditions permit, we can switch to PSK modulation later. The speed will be much faster than the current one, but for now, we have to make do with it."
Faced with an extremely low network speed of less than 1kB per second, they have only one choice if they want to transmit the images as quickly as possible, which is compression.
Crazy compression.
Compress a 10M image to 1M, and then to 10KB. During the compression process, the image will lose 99.9999% of its information.
It takes 100 seconds to transmit a 10KB image using this 725 radio.
Wang Ning and Bai Zhen conducted an experiment to see what effect image compression and transmission would have.
Wang Ning took a photo of Lao Bai, a frontal bust portrait, 1.5M in size.
Next, import it into PS and perform proportional compression first, reducing the pixels of a large image to one-fourth of the original size. This reduces the size by half. Next, perform chromaticity sampling to turn a color photo into a black and white photo, which reduces the image by half again. Finally, perform quality compression. The operation is as fierce as a tiger, and the compression ratio is 1 to 5.
Finally, Wang Ning showed the photos——
My mother passed by the living room and glanced at me from a distance.
"What Ugandan chimpanzees?"
(End of this chapter)
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