Detective: I have a split personality, but I’m really not a murderer

"To identify the details of the fibers, I use a polarizing microscope!"

In the forensic laboratory, the High Court quickly replied:

"The special filter of the polarizing microscope can transmit light into the interior of the fiber, thereby illuminating the internal structure of the fiber.

Based on this, the size and type of fiber can be determined.

There are also fuels used, processing techniques, etc.

Going one step further, you can determine whether the fiber comes from clothing, bags, foot pads, etc."

"So if there are two fibers, how to determine whether they come from the same item?"

"This is easy too!

Gao Ting:"You can use a light bridge to connect two microscopes."

This allows key features such as shape, color, texture and material to be observed simultaneously on both samples.

So as to determine whether the two have the same origin!"

"What if the substance that needs to be identified is smaller?"

The technical captain of Miyun District felt that the questions of ordinary technicians were too simple, so he spoke in person:

"Like, now there's a rope!

Through the microscope, we found particles as big as needle tips on the rope fibers. How do you further identify these particles?"

Gao Ting didn't think about it and said directly:

"I would choose scanning electron microscopy! Dongcheng

District technical captain:"What is the reason for this choice?""

"Because the scanning electron microscope uses a focused electron beam instead of an ordinary beam, the scanned image will be clearer!"

Gao Ting said:"Moreover, scanning electron microscopes have higher resolution and excellent depth of field.

It also provides clear three-dimensional images of the sample.

Based on this information, the type of particles can basically be determined."

Huairou technical captain:"How to identify very small amounts of dangerous goods?"

"Use single particle aerosol mass spectrometry by……"

Shunyi Technical Captain:"How to detect processed shoe prints and tire prints at crime scenes?"

"Using a 3D laser scanner……"

The Haidian technical captain pulled up a photo from his mobile phone:

"There was a home invasion and robbery in our Haidian District not long ago. At the crime scene, we found the metal wire that the suspected robber had left.

On the wire, some tiny brown spots were identified.

This photo was taken after enlarging the spots!

Can you identify what they are?"

Gao Ting only glanced at the photo and said:

"It's spores, fungal spores!

The shape, markings and color of the spots are consistent with typical characteristics of fungal spores"

……

The technical captains of each district asked questions respectively, and the High Court also answered fluently.

The expressions on the faces of the ordinary investigators behind him also changed from surprise to surprise, and finally to shock.

At first, the questions raised by ordinary investigators were easy to answer.

For example, how to identify the details of fibers, how to compare two fibers, how to identify tiny substance residues on fibers, etc., they can basically answer them.

However, the difficulty of the questions asked by the technical captains of each district has obviously increased to a higher level, and it is basically difficult to use them in ordinary appraisals.

Let them answer, I'm afraid they will have to think about it for a while!

Especially the photo of the captain of Haidian District, no one recognized it.

Because the question itself is a bit of a hoax!

After identifying the structure of a small substance, if you cannot determine its type, you will usually compare it in a catalog of substances.

Decide on the big categories first, and then confirm the sub-categories!

How can you take out a photo like this and let others identify it directly?

The key is that High Court actually answered!

Judging from the unhappy look on the Haidian District captain's face and his lack of denial later, it was clear that Gao Ting got the answer right.

This is a bit outrageous!

"There seems to be something really special about this High Court!"

"Seems much better than me!"

"There are so many questions that I’m afraid I’ll answer wrong!"

……

Zhou Yiting, who was standing next to Gaoting, had a look of surprise mixed with surprise.

Although she trusted Highgarden very much, she was still very surprised to hear his fluent answers to those messy questions.

"This time we entrusted the High Court to investigate, and we definitely found the right one! Xiong

Leilei couldn't help but widen his eyes as he listened to Gao Ting's answer.

His grades were average, so he admired those who studied well the most.

Before Gao Ting came, he admired Lin Xiaoxiao.

But after Gao Ting appeared, the object of his admiration was... He changed to the High Court.

However, he had thought that the High Court was only good at investigating. Unexpectedly, he was also so proficient in the more complex field of physical evidence identification.

"OK OK……"

Sun Changming kept cheering in his heart and looked at Gao Ting with unusually bright eyes.

This High Court is really talented!

This time I really found a treasure!

Soon, almost all the technical captains on the scene asked questions.

High Court also gave accurate answers.

The only one who didn't ask questions was He Fudao, the technical captain of the Chaoyang Investigation Bureau.

Seeing Gao Ting answer all the questions easily, he also knew that he had underestimated Gao Ting before.

This High Court is not a noob in the field of physical evidence appraisal.

Unlike what was described in the information, he had never received any training in physical evidence identification.

He has a thorough understanding of the characteristics, identification instruments, and identification methods of various physical evidences. It is absolutely impossible to reach this level without years of study and study.

He Fudao thought for a while and stood up:

"High Court, I have one last question!

The sample is still the fiber that someone asked about before.

The characteristic of the sample is that there are still slight substance residues on it.

You said before that you can use a scanning electron microscope to determine the type of substance.

But now, because there is too little substance left, after scanning, it is still impossible to determine what kind of substance it is.

However, to solve the case, it is urgent to determine the type of substance.

What do you do in this situation?"

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