As soon as Wang Ning finished speaking, the 725 amateur radio station on the coffee table began to radiate electromagnetic signals to the outside world. It converted the pictures into sounds and hid the sounds into radio waves that human ears could not catch. This was a whisper that humans could not catch and understand.

Whispering, but the magic is that it is actually an image that converts images into sounds. It may be difficult for ordinary people to imagine, but for people who have mastered information encoding technology, information is information, and the carrier is a carrier. As long as insight is

The essence of information, it is not difficult to separate it from the carrier. Ever since humans used chisels to carve murals into caves hundreds of thousands of years ago, images, as the carrier of visual information, have developed from rock walls to clay tablets and canvases.

On paper, on paper, and on photosensitive film, after thousands of years of vicissitudes, the relationship between the two seemed to be eternal. Until the fire of the industrial revolution ignited and information theory brought innovation to the world, people could finally transform image information from a two-dimensional plane.

Pick it up, stuff it into sound, stuff it into current, stuff it into light waves. From now on, any information can be broken apart, crushed, and stuffed into any carrier.

Insight into the nature of information is, in a sense, God's power.

With information in hand, humans have taken another step toward the gods.

Bai Zhen was standing in front of the laptop screen, and the photos were being scanned out bit by bit from top to bottom. What did this feel like? It was like a lottery draw or a scratch-off lottery, scraping off one by one to reveal the pictures behind it.

The signal reception was not good at first, and only green snowflake noise came out. Bai Zhen adjusted the direction of the antenna slightly, so that he could receive clearer photos.

"How is the situation?" Wang Ning asked.

"It's okay." Bai Zhen replied, "It's just that the speed is a bit slow."

A Ugandan chimpanzee... Bah, the half-length photo of a baboon is 15KB in size, and the transmission speed between the 725 and 705 being simulated in the living room at the moment is only about 1000bps, which is 0.1KB per second. Ideally, this

It takes 150 seconds for a photo to be completely transferred successfully, which is two and a half minutes.

But how can the reality be so ideal?

After all, radio is radio, not cables and optical fibers. Using radio waves to transmit signals is convenient and simple, but you can no longer expect it to be very efficient.

You can only have two out of the three: convenience, simplicity and efficiency.

Therefore, the image transmitted by amateur radio is unstable. When it comes to network engineering, it means serious packet loss, one antenna is not aligned properly, and what is scraped out is a strip of green snowflake spots. If you want to successfully receive a complete and clear picture at one time,

It can't be done.

In order to ensure that the signal can be transmitted completely, Wang Ning will transmit multiple redundant signals. His 725 will continuously send pictures in a cycle of one hundred and fifty seconds until Bai Zhen can receive a complete picture.

So in Bai Zhen's eyes, the Lenovo computer in front of him was scratching the screen repeatedly, and being able to scratch out a complete photo of himself was considered a jackpot.

"Wait... there is interference, where is the interference coming from?" Bai Zhen scratched his head and looked around, "Is it a switch? Lao Wang, wait a minute, I'll go and pull the switch and try."

He immediately ran to turn off the electric switch, which cut off the power and made the house dark.

"Is there a power outage?" Mom came out of the bedroom holding her cell phone and flashlight, "Why did it suddenly go dark?"

"Lao Bai has shut down." Wang Ning sat on the sofa, his fat face illuminated by the green light of the RT monitor, "We are doing an image transmission experiment."

"You just do experiments, why do you want to pull the trigger?" Mom asked.

"There is interference." Wang Ning replied.

Annoying electromagnetic interference is everywhere in modern society, such as the tower crane at the construction site next door, the security intercom at the gate of the community, the electric car downstairs, and many inconspicuous small appliances in daily life, such as the power switch in the house. It is everywhere

, all-round stereo interference is impossible to avoid. Bai Zhen can only turn off the electric switch of his own house, but cannot turn off the neighboring house next door, let alone the Meihua Villa community. This is how the electromagnetic environment in the city has deteriorated.

Some old hams like to fight in the wild... ah, no, wild fighting, they want to fight in this clean and endless environment. The good signal-to-noise ratio allows them to hear the sound of a fly rubbing its hands on the radio wave.

After the power was cut off, Bai Zhen tried to receive signals again.

"Is it any better?" Wang Ning asked.

"No!" Bai Zhen said, "The same thing."

"Go find the main power switch of the community." Wang Ning said, "Turn off all the power in the community. This will stop the interference."

"Then I must not be eaten alive by the property owner?"

"Hey, there are special reasons and special times. Just tell them to urgently requisition electricity. Unit No. 1 will use positron cannons to deal with the fifth apostle on Purple Mountain. If we don't give electricity, Ayanami Rei will die."

·

·

·

Bai Yang was sitting in the dark wearing a sweater. The radio was connected to the battery and the desk lamp was turned on. The warm light opened up the night and formed a small circle, including the desk, pen holder, radio and the boy's face. He was holding a microphone in one hand.

, holding a pen in one hand, concentrating on writing vigorously.

"Huh? It's okay. The lights are just dark. My dad and the others have pulled the brake." Bai Yang held down the PTT and spoke, "They are doing an image transmission experiment. Miss, let's continue... Do you know Newton? Newton's gravity

Law,overR.”

"Newton?" The other end was very confused, "What is Newton?"

"He is a British man, a great physicist." Bai Yang explained, "The Fg·(mm/r) written by your teacher on the draft is the formula of the law of universal gravitation. F here is gravity, g is the universal gravitational constant, and the two m's are

The mass of a celestial body, r is the distance, which means the size of the gravitational force between two celestial bodies, which is proportional to the product of their masses and inversely proportional to the square of their distance, overR."

"oh……"

The girl nodded in understanding.

It doesn't matter if the monk chants sutras and she rings the bell. It doesn't matter if she doesn't understand. She just nods her head anyway.

"I infer that your teacher was studying the relationship between the black moon and the earth at that time, so he wrote these numbers and formulas on the scratch paper." Bai Yang said, "It's just that you couldn't understand it at the time, overR."

"I can't understand it now either."

"It doesn't matter if you can't understand, I can understand!" Bai Yang was very confident.

There is a reason for Bai Yang's confidence and confidence. He is a senior high school student who is about to face the college entrance examination.

He is now at the stage in his life when he has the most extensive knowledge, the strongest thinking ability, knows everything about astronomy and geography, and knows everything about history and politics.

"Let's sort out these data. Miss, do you believe it or not, I can deduce the full picture of the Black Moon based on only the data of 1,200 kilometers?" Bai Yang said, "overR."

The girl was stunned for a moment, "Really?"

"Really." Bai Yang nodded, "Miss, let's look at 1,200 kilometers first. This number the teacher wrote on the draft of "Journey to the West", we think it is the diameter of the black moon, right?"

Banxia nodded.

There are two numbers and two circles on this page of "Journey to the West" draft paper. The numbers are 1200 and 3476 respectively. The two numbers are marked next to the two circles. Pinellia ternata and Bai Yang reached a consensus when interpreting this draft.

, thinking that these two circles are the white moon and the black moon, 3476 is the diameter of the white moon, and 1200 should be the diameter of the black moon.

"In your eyes, the black moon is the same size as the white moon?" Bai Yang then asked, "Miss, is that true? oveR."

"Yes, they look the same size." Banxia nodded.

"Then I can know how far the black moon is from you..."

Bai Yang opened the calculator and quickly drew a draft on the paper.

He had never been so diligent in his life. He was still doing math and physics even when the lights were out. His mother said that if he had this kind of motivation in studying, he wouldn't have to kowtow all the way from Purple Mountain to Xuanwu Lake if he wanted to get into Nanjing University.

"The radius of the moon is 1737 kilometers."

"The distance between the earth and the moon is 380,000 kilometers."

"The tangent should be 0.0045718..."

Half a minute later, Bai Yang got the answer.

"Miss, the Black Moon is about 131,239 kilometers away from you, oveR."

Banxia was surprised.

"How did you know?"

"Radian, miss, it's a simple calculation. The white moon and the black moon are the same size in your eyes, so the radian angle is the same when you look at them." Bai Yang explained, "The white moon is 380,000 kilometers away from you.

The diameter is 3476 kilometers, so the diameter of the black moon is 1200 kilometers. Calculate using trigonometric functions, it should be 130,000 kilometers away from you, oveR."

"Amazing."

Although Banxia didn't understand it, she thought it was amazing.

"Let's continue the calculation. Now that we know the distance between the black moon and the earth's surface, we can calculate the black moon's operating cycle, the cycle of its orbit around the earth." Bai Yang was quite proud, and was praised by the beautiful girl for being as powerful as a bald physics teacher.

His praise was much more useful. He listed the formulas on the draft paper and calculated in one breath, "Adding the radius of the earth, r should be 137610 kilometers...T (4r/gm), then T should be...

"

Bai Yang held the microphone and muttered something while doing calculations. The room was silent late at night, except for the twenty-year-old girl who listened attentively.

Numbers and formulas flowed down from the tip of the boy's pen, forming a small river on the white paper.

Bai Yang lived for eighteen years and studied physics for five years. For the first time, those dragon-slaying skills that could capture the moon in the sky and catch turtles in the five oceans were put to practical use for the first time.

When he actually used it, Bai Yang was shocked to realize that he had mastered such a powerful tool. This was the law of the universe's operation and the underlying code of the universe online. Every high school student had built a magnificent edifice of classical physics in his mind, but few

Someone really uses it and lets it weather and collapse over time.

"16 days!"

"Miss, the black moon's cycle is 16 days. It revolves around the earth every sixteen days, overR."

"Incredible! It's amazing, Bg4mxh, how did you do this?"

Banxia couldn't believe it, she felt that Bg4mxh was doing magic.

He has never seen the black moon, so how can he know how long it takes for the black moon to turn around?

"I didn't do this by myself. Behind me stood Newton, Kepler and all the physicists in human history." Bai Yang said, "There is also my physics teacher, who put all the ideas of the most genius minds in history together."

He taught me all the top wisdom contained in it.”

"Then your physics teacher is so awesome!"

"I would like to thank you on behalf of our physics teacher, Miss. Your teacher must have calculated all these things at that time." Bai Yang said, "We continue to push it down. Now we already know that the Black Moon is 130,000 kilometers away from us, but

I can't understand why it is orbiting 130,000 kilometers away from the earth?"

Banxia was stunned, she didn't know what this question meant.

Why does it have to orbit 130,000 kilometers from the earth?

If Black Moon wants to stay in that place, that's its freedom, right?

How could she possibly know why?

"Miss, the big eyes come from the black moon, right? Then why doesn't the black moon come closer so that the big eyes can come?" Bai Yang asked a question that Ban Xia had never thought about, "One hundred and thirty thousand kilometers, this

The distance is not close, it takes a long time to fly, why doesn’t it get closer? oveR.”

"Hmm...maybe there is some special reason?"

The girl thought for a while.

"There is a reason behind every phenomenon." Bai Yang said, "Miss, we might as well imagine that the reason why it can't get any closer is because it can't get any closer. The reason why it has to stay in orbit 130,000 kilometers away is because it can't get any closer.

It’s because it can only stay in an orbit of 130,000 kilometers recently, overR.”

"Why?" Banxia asked, "Why can it only stay there?"

"Because there is a force restricting it." Bai Yang replied, "There is a force that no one can resist, overR."

"What power?"

"Gravity, miss, is the universal gravitation." Bai Yang said, "The only force in the universe that cannot be unified and cannot be controlled is restricting the black moon. If the black moon gets too close, it will be torn into pieces by the earth's huge gravity.

, 130,000 kilometers is its safety range. It cannot cross this red line. Anyone who crosses the thunder pool will be shattered to pieces... The name of this red line is the Roche limit, overR."

"Assuming that 130,000 kilometers is the Roche limit of the earth and the black moon, then we can deduce the density of the black moon... Let me find the formula of the Roche limit! There are fluid Roche limit and rigid body Roche limit...

Bai Yang opened his mobile phone and hurriedly searched Baidu, and pulled out a blank piece of scratch paper, "I found it! I found it! Let me do the math, the formula is d4.423R(/)^(1/3), and the average density of the earth is

5507.85kg/m... Then the average density of the Black Moon under the fluid Roche limit is 7.83kg/m, and the average density under the rigid Roche limit is 1.09kg/m."

"Miss, the average density of the Black Moon is between 1.09kg/m and 7.83kg/m."

Banxia was a little dazed, not understanding what these numbers meant.

What is the concept of density?

The density of the air we breathe in daily life is 1.3kg/m. The density of nitrogen is 1.26kg/m, the density of oxygen is 1.46kg/m, and the densest gas radon is 9.73kg/m, which means that the black moon

The maximum density is not as high as that of radon gas.

"What does this mean?" Banxia asked.
Chapter completed!