Chapter 15 chapter 2

Pushing open the door of the 13th research room of the Department of Physics, Faculty of Science and Technology, Imperial University, one can see bluish-white flames spraying out.Yu Chuan was wearing a white coat and standing there holding a gas stove. "Who, came in without knocking!" Tang Chuan yelled.Because the gas stove is so noisy. "Knocked, but no one answered!" Kusanagi also shouted. Tang Chuan immediately extinguished the fire, put down the gas stove, and took off his white coat. "It's too hot, it seems that this experiment is not suitable for indoors."

"Experiment? What experiment?" "A very simple electrical experiment, didn't you do it when you were in elementary school? Connect the battery and the light bulb together, turn on the switch, and the light bulb will light up. This is the experiment." Tang Chuan said, pointing to the table used for the experiment. As he said, a square box supposed to be used as a power source and a light bulb the size of a softball were connected by two wires.If it is only these, it is no different from the experiment of elementary school students.But there is a Lili rod several centimeters long connected between a wire and the light.

"What is this glass rod for?" Kusanagi asked. "Conductive." Tang Chuan replied. "Glass rods can't conduct electricity! Could it be made of special materials?" "What do you think?" Tang Chuan smiled.The young physicist loved to play tricks on his old classmate by answering irrelevant questions, and he never got tired of it. "I don't know why I asked you." "You can use your brain before asking. Just turn on the switch and you will know. Yes, the switch is on the box." Kusanagi connected the circuit carefully, and because he was worried about accidents, he even prepared to escape.But nothing happens.

"What, what's the matter?" "It's not made of any special material, it's just an ordinary glass rod. The glass rod is an insulator, and of course the current cannot pass through it." "then you……" "But if so, what happens?" Yukawa turned on the lighter and lit the gas stove.Due to the adjustment of the air volume, the flickering flame gradually turned into a sharp blue-white flame.He held the flame close to the glass rod with bricks under it. As soon as the glass rod was heated by the flame of the gas stove, it began to turn red, as if it was about to melt.After a while, something surprising happened, the light bulb suddenly lit up, that is to say, a current passed through it.Kusanagi gasped in surprise.

"The main components of glass are silicon and oxygen. In the solid state, these two elements are firmly combined, but if they are heated and melted, their combination is not so strong, and the positively charged silicon ions flow to the negative electrode. Negatively charged oxygen ions flow to the positive electrode and conduct electricity." Kusanagi didn't quite understand what Yukawa meant, but he knew that the half-melted glass rod in front of him was completely different from the glass rod he usually saw. Yukawa extinguished the gas stove, Kusanagi thought the experiment was probably over, the glass rod should return to its original shape, and the current could no longer pass through.But he was wrong, the glass rod was still shining brightly, and the electric light was still on.

"Once the current is generated, the glass rod itself will continue to heat and continue to conduct electricity, and no longer needs to be heated by a gas furnace." "Oh, why does it feel like a habitual criminal?" "how do I say this?" "At the beginning, there was a specific criminal motive. Under the action of that motive, the mind was impulsive and embarked on the road of crime. Once this step was taken, the mind became more enthusiastic and started a new crime regardless of the consequences. This is A typical vicious cycle where, in retrospect, the original motivations seem trivial."

"Haha," Tang Chuan smiled, "So that's the case, there are indeed some similarities." "In fact, as long as you can turn off the switch at the right time, it will be fine." "Yeah, if you can't do that, it will become like this." Yu Chuan pointed to the glass rod. The glass rod that emitted a strong red light eventually melted due to its own heat, and the light bulb went out. "Suicide." A few minutes' walk from the university, there is a tavern called "Mei Fu". The main customers are students. Most of the menus are set meals, and the variety is also very rich.Kusanagi used to frequent here before, but he didn't expect to come here again at this age.But Yukawa insists that there is enough here.No choice but to come here.

Kusanagi went back to his alma mater today. He had nothing else to do but wanted to have some wine with Yukawa.The two sat on the seats inside the front desk as before. After talking about the current situation of old classmates for a while, Kusanagi talked about meeting Yayoi Kanzaki during the day as a small talk.Tang Chuan didn't show any particular concern, but he still said, "You can investigate the Takano family she mentioned." "You think so too?" "I have some doubts about that group of relatives." "That's right," Kusanagi filled Yukawa's glass with beer, and poured the rest into his own.

According to Yayoi Kanzaki, when she called Takano’s house, a man answered the phone. The man claimed to be a relative of Takano. Kyuki Kanzaki asked if her husband had been there. Yes, I'm very busy now, so I hung up the phone right after I finished speaking. Yayoi still had some doubts, so she went directly to Takano's house.A man in his thirties and forties came out to receive her. She felt that it was not the man who answered her phone. Yayoi showed him a photo of Kanzaki Toshiyuki and asked him if he had been here recently.The man said without looking at it that no one had been here recently.She wanted to ask again, but the man frowned impatiently, as if he was saying——are you annoying? .

No way, Yayoi left Takano's house and asked the neighbors around.She learned that there are several men and women living in Takano's house. They came and went here two months ago, and they didn't know when they started to live here.Takano Hideo had introduced to her neighbors before her death, saying that her nephew and his wife had come. She had been living alone and relatively lonely, and she seemed very happy when she talked about it. It is said that Gao Yexiu's death was caused by a heart attack, and her funeral was held in a very low-key activity room in the street.But there is one thing that has always made Yayoi suspicious, that is, the day Takano Hideo died was also the day Toshiyuki disappeared.

"To launch an investigation, we need a name." Kusanagi said, "As it is now, we can't take action, at least not as a criminal case." "Among my friends, some people hate mystery novels very much," Yu Chuan put the sea cucumber into his mouth, "because they think that the criminals are stupid, and they spend so much time researching killing methods in order to deceive the police, but they don't know how to dispose of the dead bodies." , but they don’t use their brains at all. In fact, as long as they hide the body, others will not know what happened, and the police will not search it.” "Where are you talking about friends, aren't you talking about yourself?" "Oh, really?" Tang Chuan drank the beer in one go.