Chapter 535
For the police hair style, it seems that the size is the standard, but the formal police hair style, in principle, is not too much required.
Just let people look at the spirit of the bright
Of course, it is unlikely that Liu Hai can cover his eyes when he looks out in the sky like East Asia H.
Undercover police are not so demanding.
But police students are different. From entering the police school, the first step is to pass the barber off. All the police cadets must shave their heads.
Of course, the light head here usually refers to the extremely short board inch.
This is the same thing as the military
Soldiers march in war, especially in wartime, usually must shave their heads before they can go to the battlefield, and get injured in the head in wartime before they can operate at the first time.
Therefore, the high-level professional practitioners, usually are board inch hair, give a kind of hard performance.
But in recent years, due to the leading role of film and television stars, more and more young people began to choose to shave.
There is a saying that good, is not handsome, a board inch to know.
hairstyle can be concealer, but board size can reflect masculinity.
He Junchao is because of bad face, so like to keep long hair, but in winter, it is difficult to get up, hair style is difficult to manage.
So hejunchao often comes to work with his hair on his head, and chicken nest head is often the object of ridicule.
but attendance is fine, and there is a hood concealer.
But these years, many police don't like wearing hats, mainly troublesome.
But it has to be said that police caps are indeed the best choice for unifying the spirit of spirit.
Like Gu Chen and lvweiwei, they like to wear police caps to enforce law, and the national emblem above them represents the enthusiasm of the people.
"He Junchao." Officer Wang walked to him, and rubbed his right hand on his head. "After lunch, hurry to take care of your hair. You come to work with your hair all day long, which really affects the overall appearance of the three groups."
"Not so exaggerated, old king?" He Junchao grabbed his hair, and immediately snow was flying, dandruff flying in the air.
"Look at it!" Officer Wang, like a chicken, lifted hejunchao up, then flew up a jio, kicked him to one side, and shouted, "you don't have a haircut yet?"
"All three groups have listened well. I know that we work hard these days, but hairstyles like hejunchao look decadent," Wang looked around for a week
"So today, after lunch, we have long hair and shaved them into a flat inch. Do you understand?"
"I see."
"And have a haircut? It's cold. "
"Yes! Now that the big guy says, "go have a haircut."
The three groups of new and old comrades answered very sparsely.
He Junchao, who returned to his seat, immediately said, "I said that old king, there must be a standard?"
"Standard?" Officer Wang looked back to Gu Chen, and then pointed to Gu Chen and said, "Gu Chen is the standard, and all people shave it to Gu Chen."
"Ah? Isn't that too bad? " He Junchao then did not do, some complain: "who knows Gu morning long handsome, can control all kinds of hair styles, but grow ordinary people will not live? Is it not even uglier for us to shave his hair
"Yes, we'll fix the border, shall we?" There are also old comrades complaining.
Officer Wang was not good at airway: "we unify, do not discount, after the hairstyle of Gu Chen, I want Zhao bureau to see, see our three groups of spirit."
"And what happened to those lucky ones? Can you grow fat in the three groups of criminal investigation? This means that the work that you have arranged is still not much. This month, it will be reduced quickly. "
"Brother Wang." "Once the pressure is high, people will be blessed, not enough work," a trainee police officer said
"Yes, in our three groups, there is a chance to be lazy? Is the probability so small that it can be ignored? "
"Ha ha, it may be that the dark food in the canteen is delicious. I have fattened us all. I heard that Master Kang has recently studied several new dark dishes. It will be on the market this noon. Tut, some of them have been eaten."
"OK, I know." Officer Wang went to the middle of the office, and said, "today, I will ask for a haircut. I will come to check in the afternoon. If I see the side is too long, I will push the knife by electric knife and help you. Don't be in a hurry."
At the moment police officer Wang said, everyone was afraid to slack off.
To say that the old king has a haircut, it is better to go to the temple as a monk.
……
……
At noon, Furong Branch canteen.
Master Kang's research on dark food may have failed. Many people have been suffering after eating.
I feel that everyone has been engaged in it. There is a kind of mouse role that Master Kang studies dishes.
Master Kang often studies some special dark food. He will try it well and will immediately push it to the canteen.From the various expression changes in the process of tasting, we can determine whether it is necessary to continue to launch or to stop here.
So every time when the dishes are new, Master Kang will sit in the corner of the canteen, quietly observing the "mice" in the canteen.
Gu Chen, Lu Weiwei, Yuan Shasha and police officer Wang took a long time to sort out the materials, so they were the latest to leave work and arrive at the canteen at the latest.
Seeing everyone's depressing expression in the dining room, Lu Weiwei, a talented person, immediately understood and immediately reminded everyone: "it seems that Master Kang's 10th attempt of new products has failed again. Please remember not to play those seemingly bizarre meals."
"Lao Kang really is. We are not mice." Officer Wang shook his head and picked up the stacked plate.
Last time, because he was curious, he made a dark dish made by Master Kang. As a result, officer Wang collapsed in the toilet all afternoon, and the whole person almost collapsed.
So since then, officer Wang has become smart. Every time he gets Master Kang and wants to bring forth new ideas, he will deliberately take the three groups to work overtime, wasting the time in the queue.
In this way, the mice follow one another, and they have to watch the wind.
After the meal, the four found a spare place and sat at will.
At this time, Nie Xiaoyu did not know when, suddenly appeared behind Gu Chen, right hand gently patted Gu Chen's shoulder: "brother Gu Chen."
"Light rain?" Gu Chen turned to look at her and said with a smile, "long time no see. Are you busy with your homework recently?"
"Almost, but I want to write a novel recently." Nie Xiaoyu said, and then came to Gu Chen's side, with the buttocks will Wang officer squeezed open, this just sat to Gu Chen's side.
"Writing novels? Is it so bad, light rain? " Yuan Shasha was also surprised and felt that Nie Xiaoyu was a little interesting.
Nie Xiaoyu is dry smile two, quickly waved his hand modestly up: "OK, our class in writing novels there are a few, but they write are sweet pet Wen, I do not want to write this type."
"What do you want to write about?" Asked Lu Weiwei.
"Want to write a novel set in the late 19th century, and then something happened in that era."
"Oh?" Before Nie Xiaoyu finished speaking, officer Wang directly interrupted: "yes, Xiaoyu, are you going to write historical articles?"
"History doesn't matter, it doesn't matter. I just want to write some stories based on the background of that era. When I was a child, I heard from my grandfather's generation that there were many interesting stories."
"So I'd like to sort it out, write a short story and take part in the recent essay competition on the website." Nie Xiaoyu said.
"Yes." Gu Chen put down his chopsticks and was the first to agree: "it's a good thing to participate in essay writing. I support Xiaoyu."
"Then I will support you."
"Me too."
Lu Weiwei and Yuan Shasha also hastened to say.
For a moment, everyone thumbs up, feeling that Nie Xiaoyu is a little fierce.
Only officer Wang reluctantly nodded.
How hard is it to write a novel? Everyone with a good eye knows that.
Police officer Wang once started writing in high school. As a result, he wrote 10 books and finally stopped writing.
Therefore, listening to Nie Xiaoyu's idea of writing a book, officer Wang supported him. In fact, his psychology was sour.
"Light rain." Officer Wang turned to look at her and asked, "is that realism that you have such a long story to tell?"
"It must be." Nie Xiaoyu suddenly twisted his body and solemnly said: "I want to write a realistic theme work about that era. The content of it is mainly about a very powerful detective who revolves among the major forces."
"But what forensic techniques were available in the late 19th century? I'm not sure, and I've been trying to find information about forensic history. "
"In the end, however, nothing was found. The earliest books I could find on forensic crime were only around the 1930s."
"Earlier It will never be found again. " Said here, Nie Xiaoyu just looked up at officer Wang, explained his intention: "officer Wang, do you usually read a lot?"
"All right." Officer Wang immediately put down his chopsticks and said lightly, "let's not say that we know astronomy and geography, but at least we can understand the basic knowledge."
"Do you know what forensic tools might be available in the late 19th century? Can you tell me? " Nie Xiaoyu blinked and asked.
"This..." Officer Wang just stayed for a moment.
Originally, it was just a casual remark in front of Nie Xiaoyu, but I didn't expect that Nie Xiaoyu's problems were cross era and special.
19th century? What a long time ago, officer Wang was stunned.
Is Nie Xiaoyu serious about writing novels with you?
"You don't know?" Nie Xiaoyu first asked, and then immediately waved his hand and said, "yes, in fact, I didn't intend to ask you.""Ha ha, light rain." Officer Wang said with a smile, and the whole person was embarrassed. He quickly explained: "the time you said is too far away. How can anyone know this kind of knowledge? Maybe there is, but there is very little that can be remembered. Our Furong Branch Office has no such knowledge at all."
"True or false?" Nie Xiaoyu didn't believe it. He turned and asked Gu Chen, "brother Gu Chen, what do you say?"
Gu Chen looked at officer Wang with a slightly calm expression and said, "Xiaoyu, the reason why it is very difficult for you to find forensic identification tools before the 20th century is certain, because it was very rare at that time, because forensic identification is a modern science."
"So?" Nie Xiaoyu nodded frequently, and then he said, "I said, I can't find so many materials. But if I use modern forensic identification to write about that era, will there be any contradiction? Or rigorous? "
"That's not true." Gu Chen shook his head, then slowly put down the chopsticks, seriously explained: "but there are a few exceptions."
"Well?" After that, Gu benchen quickly took out his head and asked, "which side of the brain is Xiaogu?"
"Yes Yes Yuan Shasha's whole person also stayed for a while, and quickly asked Gu Chen: "elder martial brother Gu, in this age, it seems that it is difficult to distinguish forensic identification techniques?"? You say forensic medicine is a modern science. Is there no source? "
"There are." After a pause, Gu Chen began to use his specialized memory to recall the materials he had read before.
In his mind, a variety of lightning strikes in various brain cells, instantly enabling Gu Chen to recall the previous content.
Gu Chen Mou son a stare, say: "you can try to write something about toxicology."
"Poison Toxicology? " Nie Xiaoyu was stunned, and quickly recorded it in the transcript, and continued to ask Gu Chen: "brother Gu Chen, is this the thing of that era? What should I write about specifically? "
"Write about arsenic, because it has been a common poison for centuries." Gu Chen said.
Nie Xiaoyu continued to record, and then asked, "which arsenic?"
"Zuo Shi You Shen."
"Yeah, I see." Nie Xiaoyu made a complete record.
At this moment, Lu Weiwei, sitting opposite Gu Chen, is somewhat puzzled: "is this arsenic so important?"
"Yes, why haven't I heard of it?" Officer Wang thinks that he is not a good student, but Gu Chen said that he did not understand any of these.
Equal to the same level as Nie Xiaoyu.
Gu Chen smiles and says seriously: "arsenic is very representative in this period, but in most of its evil history, it has never been proved that it was the culprit of suspicious homicide..."
Speaking of this, many of the police officers around him began to face Gu Chen. Some even came to Gu Chen's side with their rice bowls.
In the middle of the book, you will be surrounded by morning.
"In 1775, Karl Schiller, a Swedish chemist, proved that arsenic can be converted into arsenious acid with chlorine water." Gu Chen took Nie Xiaoyu's notebook directly, wrote the Chinese and symbol of this element on it, and continued:
"if you add zinc and heat the acid mixture, hydrogen arsenide will be released."
"When the gas comes into contact with a cryogenic container, arsenic agglutinates on its surface."
"So, in 1821, when severas used this technique to detect arsenic in the stomach and urine of a poisoned person, the field of forensic toxicology was born."
"Oh A burst of surprise at the scene, many people suddenly realized.
Lu Weiwei was also surprised. Some admirers said: "this is the birth of forensic toxicology. I heard about it before in the police academy, but now I have forgotten it. I didn't expect that Mr. Gu can still remember it?"
"All right." Gu Chen gave a faint smile, and then said, "unfortunately, since then, the progress in this field has been quite slow."
We all know each other.
"Do you know Mark Twain?" Gu Chen asked casually.
Nie Xiaoyu immediately raised his hand and said, "I know, a famous writer."
"Yes." "Mark Twain knew the power of fingerprint recognition and used it in his two books, life on the Mississippi River and the tragedy of fool Wilson," goochen continued
"In the former, he used a thumbprint to show the murderer, while in the latter, a fingerprint appeared during the trial."
"Oh my God, I like to put this kind of content in this kind of novel." Nie Xiaoyu was so happy that he grabbed Gu Chen's arm and said, "who invented fingerprint first, brother guchen?"
"This..." Gu Chen hesitated for a moment, and then said faintly, "it is interesting that the plots in Mark Twain's novels were published before Sir Francis Galton's fingerprint study was published."
"Isn't it interesting that Sir Galton knighted the latter for" discovering "the value of fingerprints"My God Officer Wang was also surprised, so he quickly asked Gu Chen: "Gu Chen, in this way, the writer Mark Twain was the first to apply fingerprints to case novels, and what kind of Sir Francis Galton was knighted only because he found the value of fingerprints? Isn't that a bargain for nothing
"That's right. It's amazing, isn't it?"
"Then Mark Twain is going to cry in the toilet."
"Ha ha, it's a tree planted by predecessors to enjoy the cool."
Many of the old and new comrades who were watching couldn't help complaining about Mark Twain.
Gu Chen is smiling: "although the writer Mark Twain wrote the related fingerprint crime into the novel earlier than Sir Francis Galton, he did not value the fingerprint detection."
"Sir Francis Galton, on the other hand, further promoted the detection of fingerprints, which led to future fingerprint inference."
"So, in any case, their contributions to the detection of fingerprints should not be underestimated, but the latter is representative. However, if it is really systematic, we still need to mention another person, that is, police officer Juan busettic of La Plata, Argentina."
"Er!"
All the people were in a daze, because what Gu Chen said was not very clear.
At ordinary times, we only know that fingerprints play a very important role in the handling of cases, but no one paid attention to how they came to the scene.
For example, before the invention of stethoscope, we didn't know. In fact, when doctors auscultated female patients, they felt the heartbeat on each other's chest.
Once the stethoscope was invented, many doctors would like to kill the stethoscope's inventor. Of course, there are not many people who can know this situation now, just for one reason.
……
www.novelhold.com , the fastest update of the webnovel!
Just let people look at the spirit of the bright
Of course, it is unlikely that Liu Hai can cover his eyes when he looks out in the sky like East Asia H.
Undercover police are not so demanding.
But police students are different. From entering the police school, the first step is to pass the barber off. All the police cadets must shave their heads.
Of course, the light head here usually refers to the extremely short board inch.
This is the same thing as the military
Soldiers march in war, especially in wartime, usually must shave their heads before they can go to the battlefield, and get injured in the head in wartime before they can operate at the first time.
Therefore, the high-level professional practitioners, usually are board inch hair, give a kind of hard performance.
But in recent years, due to the leading role of film and television stars, more and more young people began to choose to shave.
There is a saying that good, is not handsome, a board inch to know.
hairstyle can be concealer, but board size can reflect masculinity.
He Junchao is because of bad face, so like to keep long hair, but in winter, it is difficult to get up, hair style is difficult to manage.
So hejunchao often comes to work with his hair on his head, and chicken nest head is often the object of ridicule.
but attendance is fine, and there is a hood concealer.
But these years, many police don't like wearing hats, mainly troublesome.
But it has to be said that police caps are indeed the best choice for unifying the spirit of spirit.
Like Gu Chen and lvweiwei, they like to wear police caps to enforce law, and the national emblem above them represents the enthusiasm of the people.
"He Junchao." Officer Wang walked to him, and rubbed his right hand on his head. "After lunch, hurry to take care of your hair. You come to work with your hair all day long, which really affects the overall appearance of the three groups."
"Not so exaggerated, old king?" He Junchao grabbed his hair, and immediately snow was flying, dandruff flying in the air.
"Look at it!" Officer Wang, like a chicken, lifted hejunchao up, then flew up a jio, kicked him to one side, and shouted, "you don't have a haircut yet?"
"All three groups have listened well. I know that we work hard these days, but hairstyles like hejunchao look decadent," Wang looked around for a week
"So today, after lunch, we have long hair and shaved them into a flat inch. Do you understand?"
"I see."
"And have a haircut? It's cold. "
"Yes! Now that the big guy says, "go have a haircut."
The three groups of new and old comrades answered very sparsely.
He Junchao, who returned to his seat, immediately said, "I said that old king, there must be a standard?"
"Standard?" Officer Wang looked back to Gu Chen, and then pointed to Gu Chen and said, "Gu Chen is the standard, and all people shave it to Gu Chen."
"Ah? Isn't that too bad? " He Junchao then did not do, some complain: "who knows Gu morning long handsome, can control all kinds of hair styles, but grow ordinary people will not live? Is it not even uglier for us to shave his hair
"Yes, we'll fix the border, shall we?" There are also old comrades complaining.
Officer Wang was not good at airway: "we unify, do not discount, after the hairstyle of Gu Chen, I want Zhao bureau to see, see our three groups of spirit."
"And what happened to those lucky ones? Can you grow fat in the three groups of criminal investigation? This means that the work that you have arranged is still not much. This month, it will be reduced quickly. "
"Brother Wang." "Once the pressure is high, people will be blessed, not enough work," a trainee police officer said
"Yes, in our three groups, there is a chance to be lazy? Is the probability so small that it can be ignored? "
"Ha ha, it may be that the dark food in the canteen is delicious. I have fattened us all. I heard that Master Kang has recently studied several new dark dishes. It will be on the market this noon. Tut, some of them have been eaten."
"OK, I know." Officer Wang went to the middle of the office, and said, "today, I will ask for a haircut. I will come to check in the afternoon. If I see the side is too long, I will push the knife by electric knife and help you. Don't be in a hurry."
At the moment police officer Wang said, everyone was afraid to slack off.
To say that the old king has a haircut, it is better to go to the temple as a monk.
……
……
At noon, Furong Branch canteen.
Master Kang's research on dark food may have failed. Many people have been suffering after eating.
I feel that everyone has been engaged in it. There is a kind of mouse role that Master Kang studies dishes.
Master Kang often studies some special dark food. He will try it well and will immediately push it to the canteen.From the various expression changes in the process of tasting, we can determine whether it is necessary to continue to launch or to stop here.
So every time when the dishes are new, Master Kang will sit in the corner of the canteen, quietly observing the "mice" in the canteen.
Gu Chen, Lu Weiwei, Yuan Shasha and police officer Wang took a long time to sort out the materials, so they were the latest to leave work and arrive at the canteen at the latest.
Seeing everyone's depressing expression in the dining room, Lu Weiwei, a talented person, immediately understood and immediately reminded everyone: "it seems that Master Kang's 10th attempt of new products has failed again. Please remember not to play those seemingly bizarre meals."
"Lao Kang really is. We are not mice." Officer Wang shook his head and picked up the stacked plate.
Last time, because he was curious, he made a dark dish made by Master Kang. As a result, officer Wang collapsed in the toilet all afternoon, and the whole person almost collapsed.
So since then, officer Wang has become smart. Every time he gets Master Kang and wants to bring forth new ideas, he will deliberately take the three groups to work overtime, wasting the time in the queue.
In this way, the mice follow one another, and they have to watch the wind.
After the meal, the four found a spare place and sat at will.
At this time, Nie Xiaoyu did not know when, suddenly appeared behind Gu Chen, right hand gently patted Gu Chen's shoulder: "brother Gu Chen."
"Light rain?" Gu Chen turned to look at her and said with a smile, "long time no see. Are you busy with your homework recently?"
"Almost, but I want to write a novel recently." Nie Xiaoyu said, and then came to Gu Chen's side, with the buttocks will Wang officer squeezed open, this just sat to Gu Chen's side.
"Writing novels? Is it so bad, light rain? " Yuan Shasha was also surprised and felt that Nie Xiaoyu was a little interesting.
Nie Xiaoyu is dry smile two, quickly waved his hand modestly up: "OK, our class in writing novels there are a few, but they write are sweet pet Wen, I do not want to write this type."
"What do you want to write about?" Asked Lu Weiwei.
"Want to write a novel set in the late 19th century, and then something happened in that era."
"Oh?" Before Nie Xiaoyu finished speaking, officer Wang directly interrupted: "yes, Xiaoyu, are you going to write historical articles?"
"History doesn't matter, it doesn't matter. I just want to write some stories based on the background of that era. When I was a child, I heard from my grandfather's generation that there were many interesting stories."
"So I'd like to sort it out, write a short story and take part in the recent essay competition on the website." Nie Xiaoyu said.
"Yes." Gu Chen put down his chopsticks and was the first to agree: "it's a good thing to participate in essay writing. I support Xiaoyu."
"Then I will support you."
"Me too."
Lu Weiwei and Yuan Shasha also hastened to say.
For a moment, everyone thumbs up, feeling that Nie Xiaoyu is a little fierce.
Only officer Wang reluctantly nodded.
How hard is it to write a novel? Everyone with a good eye knows that.
Police officer Wang once started writing in high school. As a result, he wrote 10 books and finally stopped writing.
Therefore, listening to Nie Xiaoyu's idea of writing a book, officer Wang supported him. In fact, his psychology was sour.
"Light rain." Officer Wang turned to look at her and asked, "is that realism that you have such a long story to tell?"
"It must be." Nie Xiaoyu suddenly twisted his body and solemnly said: "I want to write a realistic theme work about that era. The content of it is mainly about a very powerful detective who revolves among the major forces."
"But what forensic techniques were available in the late 19th century? I'm not sure, and I've been trying to find information about forensic history. "
"In the end, however, nothing was found. The earliest books I could find on forensic crime were only around the 1930s."
"Earlier It will never be found again. " Said here, Nie Xiaoyu just looked up at officer Wang, explained his intention: "officer Wang, do you usually read a lot?"
"All right." Officer Wang immediately put down his chopsticks and said lightly, "let's not say that we know astronomy and geography, but at least we can understand the basic knowledge."
"Do you know what forensic tools might be available in the late 19th century? Can you tell me? " Nie Xiaoyu blinked and asked.
"This..." Officer Wang just stayed for a moment.
Originally, it was just a casual remark in front of Nie Xiaoyu, but I didn't expect that Nie Xiaoyu's problems were cross era and special.
19th century? What a long time ago, officer Wang was stunned.
Is Nie Xiaoyu serious about writing novels with you?
"You don't know?" Nie Xiaoyu first asked, and then immediately waved his hand and said, "yes, in fact, I didn't intend to ask you.""Ha ha, light rain." Officer Wang said with a smile, and the whole person was embarrassed. He quickly explained: "the time you said is too far away. How can anyone know this kind of knowledge? Maybe there is, but there is very little that can be remembered. Our Furong Branch Office has no such knowledge at all."
"True or false?" Nie Xiaoyu didn't believe it. He turned and asked Gu Chen, "brother Gu Chen, what do you say?"
Gu Chen looked at officer Wang with a slightly calm expression and said, "Xiaoyu, the reason why it is very difficult for you to find forensic identification tools before the 20th century is certain, because it was very rare at that time, because forensic identification is a modern science."
"So?" Nie Xiaoyu nodded frequently, and then he said, "I said, I can't find so many materials. But if I use modern forensic identification to write about that era, will there be any contradiction? Or rigorous? "
"That's not true." Gu Chen shook his head, then slowly put down the chopsticks, seriously explained: "but there are a few exceptions."
"Well?" After that, Gu benchen quickly took out his head and asked, "which side of the brain is Xiaogu?"
"Yes Yes Yuan Shasha's whole person also stayed for a while, and quickly asked Gu Chen: "elder martial brother Gu, in this age, it seems that it is difficult to distinguish forensic identification techniques?"? You say forensic medicine is a modern science. Is there no source? "
"There are." After a pause, Gu Chen began to use his specialized memory to recall the materials he had read before.
In his mind, a variety of lightning strikes in various brain cells, instantly enabling Gu Chen to recall the previous content.
Gu Chen Mou son a stare, say: "you can try to write something about toxicology."
"Poison Toxicology? " Nie Xiaoyu was stunned, and quickly recorded it in the transcript, and continued to ask Gu Chen: "brother Gu Chen, is this the thing of that era? What should I write about specifically? "
"Write about arsenic, because it has been a common poison for centuries." Gu Chen said.
Nie Xiaoyu continued to record, and then asked, "which arsenic?"
"Zuo Shi You Shen."
"Yeah, I see." Nie Xiaoyu made a complete record.
At this moment, Lu Weiwei, sitting opposite Gu Chen, is somewhat puzzled: "is this arsenic so important?"
"Yes, why haven't I heard of it?" Officer Wang thinks that he is not a good student, but Gu Chen said that he did not understand any of these.
Equal to the same level as Nie Xiaoyu.
Gu Chen smiles and says seriously: "arsenic is very representative in this period, but in most of its evil history, it has never been proved that it was the culprit of suspicious homicide..."
Speaking of this, many of the police officers around him began to face Gu Chen. Some even came to Gu Chen's side with their rice bowls.
In the middle of the book, you will be surrounded by morning.
"In 1775, Karl Schiller, a Swedish chemist, proved that arsenic can be converted into arsenious acid with chlorine water." Gu Chen took Nie Xiaoyu's notebook directly, wrote the Chinese and symbol of this element on it, and continued:
"if you add zinc and heat the acid mixture, hydrogen arsenide will be released."
"When the gas comes into contact with a cryogenic container, arsenic agglutinates on its surface."
"So, in 1821, when severas used this technique to detect arsenic in the stomach and urine of a poisoned person, the field of forensic toxicology was born."
"Oh A burst of surprise at the scene, many people suddenly realized.
Lu Weiwei was also surprised. Some admirers said: "this is the birth of forensic toxicology. I heard about it before in the police academy, but now I have forgotten it. I didn't expect that Mr. Gu can still remember it?"
"All right." Gu Chen gave a faint smile, and then said, "unfortunately, since then, the progress in this field has been quite slow."
We all know each other.
"Do you know Mark Twain?" Gu Chen asked casually.
Nie Xiaoyu immediately raised his hand and said, "I know, a famous writer."
"Yes." "Mark Twain knew the power of fingerprint recognition and used it in his two books, life on the Mississippi River and the tragedy of fool Wilson," goochen continued
"In the former, he used a thumbprint to show the murderer, while in the latter, a fingerprint appeared during the trial."
"Oh my God, I like to put this kind of content in this kind of novel." Nie Xiaoyu was so happy that he grabbed Gu Chen's arm and said, "who invented fingerprint first, brother guchen?"
"This..." Gu Chen hesitated for a moment, and then said faintly, "it is interesting that the plots in Mark Twain's novels were published before Sir Francis Galton's fingerprint study was published."
"Isn't it interesting that Sir Galton knighted the latter for" discovering "the value of fingerprints"My God Officer Wang was also surprised, so he quickly asked Gu Chen: "Gu Chen, in this way, the writer Mark Twain was the first to apply fingerprints to case novels, and what kind of Sir Francis Galton was knighted only because he found the value of fingerprints? Isn't that a bargain for nothing
"That's right. It's amazing, isn't it?"
"Then Mark Twain is going to cry in the toilet."
"Ha ha, it's a tree planted by predecessors to enjoy the cool."
Many of the old and new comrades who were watching couldn't help complaining about Mark Twain.
Gu Chen is smiling: "although the writer Mark Twain wrote the related fingerprint crime into the novel earlier than Sir Francis Galton, he did not value the fingerprint detection."
"Sir Francis Galton, on the other hand, further promoted the detection of fingerprints, which led to future fingerprint inference."
"So, in any case, their contributions to the detection of fingerprints should not be underestimated, but the latter is representative. However, if it is really systematic, we still need to mention another person, that is, police officer Juan busettic of La Plata, Argentina."
"Er!"
All the people were in a daze, because what Gu Chen said was not very clear.
At ordinary times, we only know that fingerprints play a very important role in the handling of cases, but no one paid attention to how they came to the scene.
For example, before the invention of stethoscope, we didn't know. In fact, when doctors auscultated female patients, they felt the heartbeat on each other's chest.
Once the stethoscope was invented, many doctors would like to kill the stethoscope's inventor. Of course, there are not many people who can know this situation now, just for one reason.
……
www.novelhold.com , the fastest update of the webnovel!
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