That night, Bai Yang lay on the bed and couldn't sleep.
In recent days, he has been unable to sleep at night.
Today is September 29th, and tomorrow is the last working day before the National Day holiday. The day after tomorrow will start the holiday. Even though they are senior high school students, the Education Bureau has given them a full seven-day holiday and strictly prohibited make-up classes.
There is no moon tonight, and there is no clear sky after the rainy day. The air conditioner outside the wall is humming. The indoor temperature is set to 25 degrees Celsius. Although it is not hot, it is stuffy. It may be that the doors and windows have been closed for too long. The concentration of carbon dioxide rose, Bai Yang took a deep breath, and put his hand on his forehead.
He was wearing a white short-sleeved T-shirt and black shorts, with one leg bent, his body paralyzed on the bed, motionless, but his thoughts were free-flowing.
When the tritium tube arrives tomorrow, he can start making a time marker, stuff it into a time capsule, and bury it in the lawn beside the square of the community.
Where should it be buried?
Bai Yang outlined the floor plan of the Meihuashanzhuang community square in front of his eyes.
That piece of square boss.
As for the time capsule, a small thing 20 centimeters long, if you bury it in a random place, you have to use a tiller to plow the ground to find it.
It would be great if she had a metal detector¡ªthe kind used by the Japanese sappers to deal with landmines in the war movie Landmine War. Its principle is simple electromagnetic induction. As long as the girl sweeps the lawn with a metal detector in her hand, she can find the time capsule she buried.
Of course, unexploded mortar shells may also be dug up.
So there must be a marker.
Buried behind a bench?
Or buried under a tree?
Bai Yang thought, there is no doubt that markers are very important, but he can't bury the time capsule in a place that is too conspicuous and easy to be found, after all, that thing has to be hidden safely for twenty years.
If it is hidden in a place that is too easy to find, then one day in the future it may be killed by a certain Cheng Yaojin halfway and cut off the beard.
Bai Yang can't even imagine how chaotic the world will become in the catastrophe that destroys human civilization.
He decided to step on the field tomorrow during the day to find a few alternative positions. This position must meet the following conditions:
First, concealment.
Can not be discovered for as long as twenty years.
Second, safety.
Cannot be lost or destroyed in a disaster.
Third, make sure that the other party can be found.
Therefore, there must be an accurate coordinate. Even in the past twenty years, the other party can find the burial place according to the coordinates.
After I have buried the time capsule, tell BG4MSR the location and ask her to dig it out.
Bai Yang let out a long breath.
This is really interesting.
Do the electromagnetic waves radiated by radio stations really have the ability to travel through time? The 14.255M Hz shortwave sent by the I725 shortwave radio station¡ªlight is also an electromagnetic wave. Does light have the ability to span time?
Light may have the ability to span time. On any starry night, when you open your eyes and look up to the sky, the entire starry sky you see is very old.
To you, they are the past, to them, you are the future.
But can you talk to them in real time?
Can the future and the past communicate in real time?
The physics teacher hammered the board in the coffin: Impossible! The speed of information transmission cannot exceed the speed of light!
Bai Yang turned over on the physics teacher's coffin board, turned sideways, and looked at the old black I725 on the bookshelf. Others always said it was a radio, but in fact its structure was not much more complicated than a radio¡ª ¡ªThe core of the radio station is just a set of simple LC oscillating circuits, and the basic composition of the LC oscillating circuit is just an inductor and a capacitor. You can buy an inductor for two dollars on Taobao, and you can buy a capacitor for two dollars. A lot, these two things connected together can generate high-frequency oscillating current, and a radio like 725 that uses a quartz crystal oscillator is more trouble-free. Shake a few times, the crystal oscillator shakes millions of times a second, and the high-frequency oscillation signal that shakes out is then transmitted through the power amplifier and antenna. It is better to say that a spaceship can be built with planks and nails.
There are many seemingly mysterious things in this world, as long as you uncover their shells, you will find that they are just grassroots teams.
Bai Yang turned over again, lying on his back and looking at the ceiling.
houseThe light in the room was very dark, and the white roof of the bedroom could no longer diffuse enough light to enter Bai Yang's eyes, so it seemed to Bai Yang that it was not white, but it was not black either, just like what he saw after closing his eyes , you can hardly tell that it is a certain color, it is vague, dim, as if beating the noise of an old black and white TV.
Bai Yang took out the mobile phone from under the pillow, and turned on the flashlight facing the ceiling.
The bedroom suddenly lit up, and there was a huge white spot on the ceiling. The path of the light was clear and followable at this time. Bai Yang remembered the electromagnetic wave propagation path of the radio station, and the radio wave radiated from the antenna of the radio station, tens of kilometers upwards. When it touches the ionosphere, it is reflected back¡ªjust like the flashlight in Bai Yang¡¯s hand at the moment, the light is emitted from the LED, reaches up to the roof, and is reflected into a pair of open eyes¡ª
The girl blinked.
Ban Xia lay on her back on the bed, staring blankly at the white spots on the ceiling.
She shook the small desk lamp in her hand, and the light spots on the ceiling also shook. To be honest, this game was quite boring, and she was not a cat, so she was not interested in the dangling light spots.
But she has nothing else to do.
Can't sleep at night.
Ban Xia turned over and lay on the bed. She wore a small white vest on her upper body and black pajama pants on her lower body. She hugged the pillow and buried her face in it. Then her two calves raised up and patted the bed board hard. , "Bang bang" sounded.
After filming for a few minutes, she didn't move again, lying on the bed straight, her face buried in the pillow, like a corpse.
Very annoying.
Tomorrow¡ªat most the day after tomorrow, BG4MXH will tell himself where to dig treasures.
Can this plan really succeed?
So annoying, annoying, annoying, annoying.
If you can't succeed, take him as a dog's head!
snort!
Ban Xia raised her hand and swiped in the air.
No, he is the only one who knows me. Where can I find the next one?
So Ban Xia stretched out her hands and put her head back in the void.
If it was menstruation period, Ban Xia would not be so anxious usually, raised her face, let out a long sigh, and spat out the hair in her mouth, then turned over and lay on her back on the bed, holding the desk lamp on the hand.
She pressed the lamp switch in her hand regularly to make the light flicker.
The teacher taught Banxia how to send CW equal amplitude newspapers, that is, Morse code, but Banxia was not very proficient in using it, because it was rarely useful.
Long and short, tick tick tick.
"G."
Ban Xia recited silently in her heart.
? Long, long, blah blah.
O.
? Long, long, blah blah.
O.
Long and short, tick tick tick.
D.
"The next thing is"
? Short long short, short long long, long short long short, long short long.
LUCK.
"Good luck."
? Short short, short long, short long long short, short long long short, long short long long.
"HAPPY."
Ban Xia draws two short arcs in the dark with his fingers, and then draws a long arc to form a small smiling face.