Forensic Medicine Qu Xiaoshui

Chapter 593 Wei Chongyang of the Betrayer (3)

Hearing this, Qu Xiaoshui relaxed a little, showing a relaxed smile:

"That's right. I have almost guessed the cause of the fire and the incomplete burning of the body."

Qu Xiaoshui leaned his shoulders on the door frame, and seeing that Yan Yuanye and Ke Weixing Yan Yuanye were attracted by her conversation with Bai Li, he didn't hide anything, and explained:
"If I'm not mistaken, this should be caused by the wick effect of the spontaneous combustion of the human body."

"The wick effect of human spontaneous combustion?" It was the first time for Ke Weixing to hear such a statement.

Qu Xiaoshui saw other people looking at him with puzzled eyes, so he guessed that they probably hadn't heard of this theory:

"The principle of burning a candle is that the melted wax oil after being heated is ignited by the burning candle wick, so that it can keep burning for a long time, right?"

This statement is very concrete and anyone can understand it.Everyone nodded.

Qu Xiaoshui walked to Mi Yu's desk, picked up the exquisite scented candle in front of him, and said:

"In fact, this phenomenon can also occur in the human body."

As long as the fat on the human body is regarded as wax oil, and the clothes on the body are regarded as the wick, it is easy to understand.

"Once the clothes catch fire slowly, the heat will dissolve the fat in the human body, and after the fat dissolves, it will seep into the burning clothes and keep burning slowly for a long time."

Bai Li looked at the aromatherapy candle on her desk with some indescribable words. She really didn't want to equate such an exquisite, beautiful, and pleasant-smelling aromatherapy candle with a burning corpse:
"You think the cigarettes were the source of the fire, don't you?"

Qu Xiaoshui nodded:
"It's highly likely."

Yan Yuanye felt that something was wrong, and immediately questioned:
"But can such a fire burn human bones to ashes?"

"The temperature of the fire ignited by cigarettes can't reach the level of burning human bones?"

Qu Xiaoshui came out from behind the desk. She went to the front first, turned on the big screen, and called up the live photos that everyone had seen before:

"Take a look at these pictures of the scene."

She pointed to all the intact items and deformed items in the house in the photo, so that everyone could look more carefully.

Ke Weixing enlarged the picture and moved it bit by bit:

"The body was clearly burning in the room, but only the heat-resistant plastic product closest to the body was deformed due to the high temperature. Other items remained intact..."

Yan Yuanye suddenly realized, he punched his own palm:

"I see, is this a phenomenon unique to low-temperature ignition?"

Qu Xiaoshui smiled so much that his eyes curled up, and he said in a gentle voice:
"That's right. It's low-temperature combustion."

Qu Xiaoshui unhurriedly lit the scented candle in his hand:

"When a closed room catches fire, it will continuously consume a fixed amount of oxygen in the room."

The laboratory where the crime scene is located is a good confined space.

She covered the flames with her hands:

"Once the oxygen content drops below 16%, the flame will gradually become smaller, the temperature of the flame will gradually decrease, and finally it will become a state of only smoking until the flame is completely extinguished."

After finishing speaking, Qu Xiaoshui blew out the candle that was getting bigger and stronger, and put the scented candle aside:
"I think that's why only the body burned and nothing else nearby ignited."

One is because the oxygen content is not enough to support the flame to continue burning, and the other is that the temperature is not enough.

So the body was left with the calves and feet below the legs, and nothing else was implicated by the fading flames, and the flames did not spread.

It is also thanks to the sealed doors and windows in the experimental classroom.

According to Qu Xiaoshui's reasoning, everything can be explained.

"That is to say, after the deceased fell to the ground, the unextinguished cigarette butt ignited his clothes. Because of the waxing phenomenon of the human body, the body continued to burn. After a few hours, the bones were burned to ashes." Bai Li concluded road.

Yan Yuanye also quickly accepted this statement:

"Indeed, it would make perfect sense if it was a low-temperature fire."

Ke Weixing didn't know much about science or theories. He just felt that although Qu Xiaoshui's argument made sense, it was just unspeakably awkward.

Seeing that both Bai Li and Yan Yuanye accepted it well, he scratched his head:

"But doesn't it seem too coincidental?"

Qu Xiaoshui was not unhappy when she was questioned, but nodded with a smile. She was simply happy that she solved a difficult problem:
"You're right. It's only theoretically feasible now. It's too early to draw conclusions. Let's analyze the ashes at the scene carefully to see if there are other possibilities."

To support the theory of burning human wicks, you must at least find evidence that cigarettes are the source of the fire.

Yan Yuanye quickly found the evidence bag containing the ashes collected at the scene, and plunged into the laboratory.

Half an hour later, he excitedly rushed out of the laboratory with the test sheet and said loudly:

"Soot was indeed recovered from the ashes at the scene."

Everyone else put down their work and went to look at the laboratory test sheet he was waving around.

It seemed that everything was moving towards Qu Xiaoshui's deduction.

On the other side, Mi Yu and Jiang Yue, who had rushed to Xiangyang Primary School, also entered the abandoned teaching building accompanied by the school teachers.

Because of the policemen who came in and out before, the long-unused door lock on the first floor door has been opened.

There is a yellow cordon on the post in front of the door.There are already many overlapping footprints on the dust on the ground.

Jiang Yue shook the umbrellas in his and Mi Yu's hands at the door a few times, then put them away and stood by the wall.

"How do you call it?" Jiang Yue turned his head and asked.

Accompanying him was a soon-to-be-retired teacher from the Academic Affairs Office. He had a Mediterranean hairstyle common to people's teachers, with a shiny forehead, and a pair of very thick glasses on the bridge of his nose, which seemed to be reading glasses.

He took out a blue and white plaid handkerchief, wiped the place on his body that was splashed by the rain, and smiled very kindly:
"My surname is Zheng, you can call me Teacher Zheng."

Jiang Yue can be very talkative when necessary. He watched Mr. Zheng carefully fold up the handkerchief and put it in his pocket, then chatted with a smile:

"Modern people rarely use handkerchiefs."

Teacher Zheng's smile deepened a lot after hearing this:
"My son also teaches at this school and this is a gift he bought me with his first salary."

It is precisely because it has a very precious meaning that it is also very precious to use. After so many years, it will be cleaned and carefully ironed.

Mi Yu went to the second floor on his own. Jiang Yue lagged behind a lot. Not only was he taking care of Mr. Zheng's age, he deliberately slowed down his progress, but he also wanted to find out more information.

"There are many photos of excellent teachers posted on the bulletin board at the gate of the school. Is your son on it?" Jiang Yue gently supported Teacher Zheng when he went up the steps.

Teacher Zheng rejected Jiang Yue's kindness with a smile. Although he is old now, he is still in good health.

Climbing up the steps is effortless.

　Thanks for the 2021-3-1 day,
　　3 monthly tickets cast by Z. Dafang

　　install.1 monthly ticket from Dafang

　　I recently faced a very important exam,

　　The update situation is not good.

　　I saw a cute message,
　　Will make up the progress as soon as possible.

　　Very sincere apology.

　　
　
(End of this chapter)