psychochemist

Chapter 485 Secret Letter Revealed
What you read is a book, but what you read is the world; what you brew is tea, but what you taste is life; what you pour is wine, but what you taste is hardship.

Chen Xingyang drove the car, took Yu Fan and Guo Na, and escorted Hu Jierui back to the Municipal Bureau.

On the way, Guo Na remembered that in the house just now, Yu Fan performed a "swallowing flames" for everyone.How in the world is this possible?Does Yu Fan really have special abilities?

Guo Na asked Yu Fan: "Brother Yu, you swallowed a fireball just now, are you okay?"

Yu Fan suddenly laughed loudly and said, "Haha, Na Na, I thought this trick was to deceive people like Chen Xingyang, but I didn't expect you to believe it too?"

Chen Xingyang said with resentment: "I seem to hear a hint of sarcasm when I stepped on the horse? What do you mean by 'deceiving someone like me'? But then again, when did you learn this special function? Why never? Did you hear that?"

Yu Fan smiled and said, "Actually, this isn't a supernatural power at all. It's just chemistry?"

Chen Xingyang exclaimed: "Chemistry? Can chemistry perform acrobatics?"

Yu Fan explained: "Fresh strawberries with a lot of water are soaked in white wine. Due to the penetration of solvent water in the white wine, the water in the strawberries will increase. When the strawberries are ignited, the alcohol attached to the outer wall of the strawberries begins to burn, and the strawberries themselves burn. Evaporate water when heated. Since the evaporation of water will absorb a large amount of heat released when the alcohol burns, the temperature of the strawberry itself does not rise much. In addition, due to insufficient oxygen supply, the inner flame of the 'fire' does not fully burn the alcohol and emits The heat is not too much, so the temperature of the burning strawberry is not high. Although the temperature of the outer flame of the flame is high, because you quickly close your mouth and stop breathing for a few seconds, the flame will be cut off from the air and have no oxygen. Extinguished. In this way, the 'swallowing fire' must be safe and sound." Yu Fan made a popular science speech.

Guo Na suddenly understood, and said: "I understand. Just now in the house, you put the strawberries in the cup, and then pretended to perform exercises there. In fact, you are buying time to let the strawberries fully soak in the white wine."

Yu Fan nodded: "Na Na still understands me."

Chen Xingyang: "The next step is to go to the Municipal Bureau and quickly reveal the secrets in this box."

In fact, Yu Fan didn't pay much attention to the box at this time, but kept looking at Hu Jierui quietly from the corner of his eyes. Hu Jierui's eyes were dull, and he sat in the car as if he had lost his soul, without saying a word.After answering that mysterious phone call, Hu Jierui seemed to be a different person. What's going on?
All the mysteries may not be further revealed until the Municipal Bureau, and in a short while, the Municipal Bureau will arrive.

Chen Xingyang and colleagues from other departments handed over the suspects. Chen Xingyang specifically asked his colleagues to conduct a comprehensive physical and psychological evaluation of Hu Jierui, especially to see if she had taken drugs and caused mental disorders.

Yu Fan, Chen Xingyang, and Guo Na took the box and went to the technical department to find a colleague to unlock it.

In the technical department, Yu Fan and three people gathered around the table, and the technicians were earnestly unlocking the password.

Chen Frameyang: "How is it? Brother, is it difficult?"

Technician: "It's not difficult, it's a very common combination lock, and I can fix it in minutes." Just after finishing speaking, there was only a "snap", and the lock unlocked, that's how fast it was.

Chen frame Yang swallowed, what is in this carefully kept box?

Yu Fan and Guo Na also approached, excitedly waiting for the answer to the mystery to be revealed.

Chen Xingyang gently opened the box, only to see a blank sheet of paper lying inside.

There is nothing but this blank sheet of paper.

This is a bit strange, what does it mean?Chen Frameyang put on the gloves carefully, twisted the paper, and looked at the light.

A lost smile suddenly appeared on Chen Xingyang's face, and he said, "Hmph, secret letter? It's too childish. For me who have watched more than 800 episodes of Conan, it's easy to reveal the words hidden on the white paper. This character is written with white milk on white paper. After the milk dries, the traces of the characters cannot be seen on the paper. However, when the white paper is slowly baked on the candle flame, the brown characters It will gradually emerge. The principle is also very simple, because milk contains a lot of protein, heating will cause the protein to precipitate, and when the precipitate adheres to the paper, it will form traces. In addition to roasting, people can also use iodine The method of wine makes secret letters appear, because when iodine touches starch, it will turn the starch blue." Chen Xingyang was very proud, imitating Yu Fan's popular science speech, and said a lot.

Guo Na added: "However, this kind of secret letter does not have to be written with milk. You can also use onion juice. Take out two scallions that we usually eat, cut off the leaves, leave the white of the scallion, and then squeeze the white of the scallion into juice. The next step is the same as the milk secret letter. Pick up a brush and dip it in the onion juice to write on the white paper. After the onion juice is completely dry, there will be no writing on the white paper. If you put the white paper on the candle flame Baked, the handwriting will appear immediately. Although the implementation steps of onion juice secret letter are roughly the same as that of milk secret letter, the principle is completely different. The onion juice secret letter is because the onion juice can make the paper produce chemical changes, forming a transparent film Substance. This substance has a lower ignition point than paper. After being roasted, it will be burnt, so it will display brown fonts. In addition to onion juice, lemon juice, garlic juice, onion juice, etc. have this property, and all can It is used to write secret letters." Guo Na also made a long speech.

Only Yu Fan didn't speak, but dragged his chin thinking about something.

Chen Xingyang patted Yu Fan on the shoulder and said with a smile, "Old Yu, how is it? Not only do you know chemistry, we also know how to use chemistry now."

Guo Na asked Chen Xingyang: "Then shall we prepare the fire now?"

Chen Xingyang: "Of course. In fact, I also know the secret message cracking methods of phenolphthalein phasing and starch phasing. I will try one by one in a while."

Chen Xingyang went to find a lighter.

Yu Fan still didn't speak, but just moved closer to the box, sniffed something with his nose, and then dragged his chin to think about something.

After a while, Chen Xingyang came with a lighter and lit it.Guo Na took the white paper and slowly approached the flame.

The white paper was getting closer and closer to the flame, and it was about to touch the flame, but nothing was displayed on the white paper.

Chen Xingyang: "Guo Na, bring the paper closer."

Guo Na: "When you get closer, the paper is about to ignite."

Chen Xingyang scratched his head: "Isn't it the secret milk letter? Then let's try other methods." Then, Chen Xingyang was going to get other reagents.

"No need!" Yu Fan stopped Chen Xingyang, "I think I already know the real key to this secret letter."

　Mistakes are temporary regrets, but misses are eternal regrets!Don't be afraid of mistakes and miss out - Calcium Carbonate
　　
　
(End of this chapter)