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Free Web Novel,Novel online - All in hlnovel.com -> Sci-fi -> We live in Nanjing Main Text Chapter Fortieth The Whole Earth Is Hiding
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- The programming thing has been tossing until Friday of this week, and Pinellia was really unsure, so Wang Ning asked a friend to invite a Huawei communication expert to come over.
When the expert saw the code written by Bai Zhen, his facial features were wrinkled into a ball.
"In my memory, I saw that thing when I was very young. It was getting dark and the distance was too far, so I could only see a vague shadow." A girl's voice came from the earphone, " It crawled upstairs with long legs, like a big black spider, and the teacher said they came from the moon."
"Black Moon? over."
"Yes, it's the black moon." The girl said, "They don't appear until after the black moon falls."
"What is the reason for the black moon?" Bai Yang sat on the chair, with a pen between his fingers, and frowned, "It can't just pop up out of nowhere, right?"
Although it is very important to find the cause of the doomsday disaster, no one can say whether the cause can be influenced and changed by human beings.
What if the Black Moon found the Pioneer or Voyager probes?
Do humans have the ability to capture Voyager now?
Going further, what if the existence of human beings is discovered by Hei Yue?
Do human beings still have the ability to hide the entire earth?
A question is a question, but there may not be an answer. If a natural disaster has reached the point where manpower cannot recover, then even if it can be predicted in advance, the only thing people can do is to minimize the loss, whether it is an earthquake or a tsunami. Confrontation is unavoidable, but at least it can tell people to evacuate and run—but when the moon sets, where are people going to run?
Go to outer space?
Those three years are definitely not enough, three hundred years is about the same.
"Let's find a way to hide the earth." Bai Yang said, "Miss, do you have any good method? over."
"Eh?" The other end was stunned for a moment, "What do you mean?"
"It's to hide the whole earth so that the black moon can't find us." Bai Yang said casually, "If it can't find us, aren't we safe? over."
"Thenthen cover the earth with a black cloth?"
"Where can I find so much black cloth?" Bai Yang smiled, "The earth's surface area is 500 million square kilometers, and you need to use 500 million square kilometers of black cloth. This is more outrageous than covering the Pacific Ocean, over."
That is to say, but the concept of "hiding the earth" has made Bai Yang's eyes wide open - in case, I mean in case, people can find out the real reason why the black moon is coming, and know that the black moon is How to find the earth, maybe this is really a way? How does it collect the specific information of the earth, then people try to eliminate this information, cut off the transmission of information, and hide the location of the earth——
It sounds incredible.
Just like the British used lights to forge cities at night during World War II to mislead German bombers, using the same idea, humans can carry out a large-scale strategic camouflage and misleading unprecedented in history!
Hide the whole earth.
If the black moon observes the earth through visible light, then people hide themselves in the visible light frequency band.
If the black moon observes the earth through infrared light, then human beings hide themselves in the infrared light frequency band.
Prescribe the right medicine and target the target.
Bai Yang thought so.
Although it is hard for him to imagine what kind of God's project it would be in operation, to hide a huge sphere with a radius of 6,370 kilometers, make it disappear in the eyes of the black moon, and play a life-and-death cosmic-scale hide-and-seek— —But it is still a possible direction to solve the problem. In the future, it has been confirmed that human beings and Black Moon will definitely lose in a head-to-head confrontation. Since they can't fight, can they still hide?
Bai Yang decided to send this idea to Zhao Bowen for him to 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, Huawei's communication experts took time out of their busy schedules to come. The latter is an old classmate of Wang Ning's old classmate. He happened to be on a business trip in Nanjing recently, so he came to the door when he heard the need. Help is here.
After reading Bai Zhen's code, he euphemistically commented that no amount of piles can make a mountain of shit.
? So the professionals went into battle in person, sank into the dantian, and the long rainbow penetrated the sun, and easily laid the first solid anal fissure-level thick stool for Shishan.
? The expert will leave when he is done, and there will be no charge. He waved his hands and said that they are all friends. If you do a little favor, the money will be free. ???There is still something to do, let’s take a step first, and there will be a period later.
Bai Yang looked at his back and sighed, if I had been admitted to university back then, I would be working in Huawei today, and I would be as chic as him.
Wang Ning said that you will still be admitted to university based on your grades from the previous grade.
Next, the two rolled up their sleeves all night and continued to build a complete image transmission link on the second-hand 725. The experts settled the foundation, the integrated development environment, and the compiler. 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 like "One Hundred Years of Solitude".
A huge problem before them is the transmission rate.
"How fast can this thing be?" Wang Ning patted the black casing of the radio.
"We use afsk, the speed may not be faster." Bai Zhen said, "I estimate about 800 to 1000bps."
"How did you figure it out?"
"According to the frequency of the sound, we convert all the data into sound transmission, whether it is an image or a code, but the frequency of the sound has a limit. The sound frequency that can be heard by human ears is only 20,000 Hz, so the sound card This is the working range." Bai Zhen replied, "The digital signal transmission rate should theoretically not 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 converted into kb? Divided by 8?"
"Divided by 10." Bai Zhen said, "10kbps converted to what we often say is 1kb/s, one byte per second, but this is a theoretical value and the highest speed."
"1kb per second or theoretical top speed?"
"Yes, 1kb per second is already an unattainable theoretical value. In actual engineering practice, a speed of 1000bps is not bad." Bai Zhen nodded.
"The speed of 1000bps" Wang Ning calculated, "0.1kb/s? 100 bytes per second? 100 bits?"
"Well, 100 bits per second." Bai Zhen said, "This is the speed of data transmission."
Wang Ning knows that video transmission is impossible. This speed is enough to read novels, let alone pictures. He dreams of going back to the era of dial-up Internet access.
"Afsk is like this." Bai Zhen said, "If conditions permit, we can switch to the psk modulation method later. The speed is much faster than the current one, but let's make up for it for now."
Facing the ultra-low network speed of less than 1kb per second, if they want to transmit images as soon as possible, they have only one choice, and that is compression.
Crazy compression.
Compress a 10m picture to 1m, and then compress it to 10kb. During the compression process, this picture will lose 99.9999% of its information.
And it takes 100 seconds for a 10kb picture to be transmitted by this 725 radio.
Wang Ning and Bai Zhen conducted an experiment, and they wanted to see what effect the compressed image would have after transmission.
Wang Ning took a photo of Lao Bai, a frontal bust, 1.5m in size.
Next, import it into ps, and first compress it proportionally, reducing the pixels of a large image to a quarter of the original size, and then compress the size by half, and then perform chromaticity sampling to convert a color photo into a black and white photo. This reduces the picture by half again, and finally performs quality compression. One pass operation is as fierce as a tiger, and the compression is 1:5 at a glance.
Finally, Wang Ning showed the photos——
Mom passed by the living room and glanced inadvertently from a distance.
"What Ugandan chimpanzee?"
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