We Live In Nanjing

  Chapter 21 Triton Tube

  What is half-life?

  Half-life is a game developed by a fat man with a binary brain.

Half-life is the time required for half of the nucleus of a radioactive element to decay. Judging the historical age based on the half-life of the radioactive isotope carbon 14 is a commonly used research method in archaeology-as long as the decay content of the radioactive element is measured, the target object can be known. how old.

   sounds quite tall, and it seems to have nothing to do with ordinary people’s daily life. It is even more difficult to deal with ordinary high school students in Baiyang. We ordinary people live in peace. What does it have to do with radioactive isotopes? What can be related to half-life?

  Yes, please raise your left hand.

   Roll up your sleeves.

  Look at your watch dial in the dark-if you are an old...gentleman and own an old-fashioned luminous watch, then its dial is coated with a common radioisotope.

  Trip.

  Bai Yang didn't sleep anymore, so he got up from the bed and took out his phone to open Taobao.

  With the help of omnipotent Taobao, there is nothing that cannot be bought.

  Triton tube!

Tritium tube is a common luminous tube. It is made of fully enclosed glass. The small one is a few millimeters long and the large one or two centimeters. The inner wall of the glass tube is coated with phosphorous phosphor, and the tube is filled with hydrogen radioisotope tritium, thin tritium Gas is weakly radioactive, which stimulates phosphors to glow. This thing is often used in luminous watches, military compasses, and the sights of firearms. Sometimes it is also used as a buoy indicator by fishing men who never air force.

The half-life of   tritium is twelve years, which means that a tuo of tritium elements will die half after twelve years, and the brightness of a tritium tube will drop by half after twelve years, and it will be nearly extinguished in twenty years.

  The time is just right!

  It happens to use a tritium tube as a time calibration object.

Bai Yang plans to buy two brand new tritium tubes on Taobao, and then find a tritium tube that has been used for five years and a tritium tube that has been used for ten years on the salted fish, both new and old-but because they have not arrived. Half-life, so the four tritium tubes are still glowing, but the naked eye can't actually see much difference.

  He planned like this:

The four tritium tubes are glued in a transparent plastic box with UV glue and arranged in the order of new, five years, ten years, and new. When the time capsule is dug out by BG4MSR, Bai Yang will let her find the time in the capsule Mark the object and ask her to answer the light-emitting condition of the tritium tube-if the four tritium tubes are all glowing normally, the same as when they were buried in, it means that the other party is nonsense.

  What doomsday and 2040 are all bullshit.

  If the four tritium tubes hardly glow in the dark, it proves that the girl is telling the truth and that time has indeed passed for at least 20 years.

  If the five or ten-year tritium tube goes out, but the new tritium tube is still glowing, it proves that BG4MSR does live in the future, but she incorrectly estimated her own age.

Bai Yang believes that there is no stronger and more tenable evidence than this. This is the so-called breaking through with force, grasping the essence, pointing straight to the road, and not playing so many bends and whistles, even if the opponent is James Bang. De, it is 007, is a flying thief. There are 10,000 ways to secretly dig out the underground time capsule to see what is hidden in it, and then buried it back without knowing it, it will not change the luminous result of the tritium tube.

  And as long as you don’t reveal in advance that it is a time marker, and if you don’t reveal in advance that it is a tritium tube, it is impossible for the other party to know what it is, let alone lie to yourself.

  Using the force beyond the reach of manpower to verify, put an end to all falsehoods and lies.

  This is Bai Yang's method.

  I buried the tritium tube here, come on!

  I'm not afraid of you using any means, whatever you toss about, as long as you open the cover and read it, I will definitely know whether what you are saying is true or false.

  Place an order!

  30 yuan a piece, two cost 60 yuan.

  It’s going to hurt again for a while.

But Bai Yang is eager to try. As a high school student who has been studying step by step since childhood, he rarely has the opportunity to do such a bold, absurd, and rebellious thing, but Bai Yang is getting more and more excited. His boring life is finally like boiled water. I broke into a different color. In novels and movies, this is often the opening of a grand adventure. This product didn't fall asleep until three in the morning, and I was full of thoughts about my plan. The result was the next day. Overslept in the morning.

  ·

  ·

  ·

   Banxia put down the earphones and hand microphone, slowly lying on the desk.

  What does he mean?

  Can you provide evidence for me? Help me prove that this year is 2040?

  But didn’t he claim to live in 2019?

  A person who lived twenty years ago, how can you help me?

The girl’s cheeks were pressed against the cold wooden tabletop, her right elbow was resting on the table, the amulet hung on her index finger, and she swayed gently like a pendulum—that was the coin the teacher left for herself, and a hole was punched through the coin. The red string can be hung around the neck at ordinary times. Pinellia's gaze chased the coin and swayed back and forth, puzzling.

The fat plastic table lamp is placed next to Pinellia's head. This is the only light source in the room. The girl’s face is illuminated by the light, while the body sits in the dark. She likes to sit in the dark and think quietly. The night can make her brain calm enough.

  How can he provide me with evidence for more than twenty years?

  Buried it? Hide it? Then wait for twenty years?

It is easy for Banxia to think of this. The other party lived twenty years ago-let's assume that he really lived twenty years ago (in fact, Banxia doesn't believe it, but she has no choice), then he was in that era. Dig a pit, bury the things he wants to send in the soil, and then notify himself through the radio station to dig it out.

  If you can find it, then it proves that all of this is true.

  He will know that she lives in 2040.

  She can also be sure that he lives in 2019.

   sounds great.

Pinellia stared at the red rope and coin hanging on the finger. The coin gradually lost its kinetic energy due to friction, and its swing became smaller and smaller. Finally, it stopped moving and slowly rotated with the lanyard as the axis. Twisted into a double helix.

This sounds reasonable, but the teacher once said that it sounds different from what it looks like, and it looks different from what it looks like. To judge whether something is feasible, ears alone are not enough. , Eyes, hands and brain are all mobilized.

  The girl frowned slowly, and she was a little worried.

  If the other party really wants to do this-it really wants to purposefully deliver something to oneself over a long time span of twenty years, then this is probably not a simple matter.

  Once there is a purpose, obstacles will naturally follow. This world always allows you to reach the end you don't want to go to inadvertently, and at the same time set many obstacles before the goal you want to go to.

  It is absolutely—absolutely—not as easy as imagined.

  (End of this chapter)