psychochemist

Chapter 107 Runaway Liquid Nitrogen

The man in the windbreaker hid behind Jiang Ranhan, who was carrying a liquid nitrogen tank in his hand.Chen Xingyang, Yu Fan and Guo Na surrounded them.

Jiang Ranhan was intimidated: "Don't come here, anyone who dares to come here, I will pour this jar of liquid nitrogen on anyone."

Everyone knows that the temperature of liquid nitrogen is -196 degrees below zero. Putting anything into the liquid nitrogen tank will have disastrous consequences!Such a low temperature can instantly solidify a human body.

At this moment, the can of liquid nitrogen in Jiang Ranhan's hand is far more powerful than a can of boiling water!
Chen Xingyang shouted: "Jiang Rantan! Are you crazy? How dare you attack the police?"

Jiang Ranhan didn't care: "Don't think I don't know what you guys do. I've tolerated you for a long time."

Chen Frameyang: "Are you tm crazy?"

"Liquid nitrogen? Hehe." There was a contemptuous laugh, it was Yu Fan, who changed his usual calmness and mocked Jiang Ranhan at this time? !
Yu Fan took a step forward and said mysteriously: "I have spent a lot of time in the laboratory. Because of an accident, I fell into a pool of liquid nitrogen, but I survived unexpectedly. Immune to the cold of this degree of nitrogen, you can't hurt me."

Everyone looked at Yu Fan in surprise, what was Yu Fan talking about?
Chen Xingyang's eyes were full of disbelief. He, a person who doesn't understand chemistry, knows how dangerous liquid nitrogen is.He kept winking at Yu Fan, as if saying, "Old Yu, don't be kidding, that is really liquid nitrogen, don't waste it! It's dangerous!"

Jiang Ranhan was also very surprised, but immediately roared more fiercely: "If you don't believe me, just try it! Do you think I'm joking?"

Yu Fan took another step forward, Jiang Ranhan was overwhelmed by Yu Fan's abnormal behavior, and wanted to take a step back, but there was a bar behind him, and there was nowhere to retreat.

Yu Fan took another step forward.Chen Xingyang and Guo Na looked at Yu Fan in horror. This situation really drove Jiang Ranhan into a hurry, and they might really pour liquid nitrogen on him.Yu Fan looked very calm and unafraid, as if a mountain collapsed in front of him without changing his face.

Guo Na was very worried about Yu Fan's safety, and whispered, "Brother Yu, slow down, don't pass by..."

But before the words fell, an accident happened.When everyone was unprepared, Jiang Ranhan erupted, and he poured the liquid nitrogen in the jar towards Yu Fan! ! ! !
That's liquid nitrogen at minus 196 degrees! !And with such a short distance, it was too late for Yu Fan to hide.

But Yu Fan didn't hide!He didn't even raise his hand to block it, he just lowered his head slightly, wow, a jar of liquid nitrogen was ~splashed~ onto ~~fan~face~!
A cloud of white mist rose from the place touched by the liquid nitrogen, as if escaping into a fairyland.

Chen Xingyang was frightened and angry at the same time. He couldn't control that much. His fighting instinct told him that the most important thing to do now was to get rid of the source of danger.Chen Xingyang rushed to Jiang Ranhan, kicked the liquid nitrogen tank away with one kick, and then swept Jiang Ranhan's head with the other kick, a beautiful two-stage kick.

After all, Jiang Ranhan was also an elderly person, so he couldn't bear Chen Xingyang's kick, and he lost his strength and fell to the ground.Guo Na and Yu Fan followed closely and held down Jiang Ranhan, and handcuffed him.

Wait a moment!Yu Fan?Yu Fan seemed to be fine after being splashed with a jar of minus 196 degrees of liquid nitrogen?Chen Frameyang and Guo Na looked at Yu Fan in surprise.

"Brother Yu, you?" Guo Na was a little surprised.

Yu Fan raised his head, scanned his surroundings, and shouted, "Old Chen! There's another one! Chase!"

It wasn't until Chen Xingyang realized that there was also the short trench coat man surnamed Gao.But the tank of liquid nitrogen just now filled the side with smog, and he was so short that he didn't notice his presence.When I come back to my senses now, he has disappeared.

Chen Xiangyang cursed to himself: "Fuck you. Chase!" Then he rushed to the door of the hotel with a brisk stride.

When it was time to get off work, there were people coming and going at the entrance of the hotel, bustling, Chen Xingyang looked around, and he could no longer see the man in the windbreaker in the crowd.

Hey, let him slip again.

Chen Xingyang ran back to the tea restaurant of the hotel to meet Yu Fan and Guo Na, and when Yu Fan saw Chen Xingyang coming back dejectedly, he asked, "Slipped?"

Chen Xingyang was very annoyed and didn't answer. He went up and kicked Jiang Rantan who was lying on the ground, and cursed: "You are so bold, the police dare to beat you!" Staying in Chen Frameyang, said: "Old Chen, don't get excited, think long-term, and follow the process first."

Only then did Chen Xiangyang give up, and Guo Na contacted the LZ police, and soon the support arrived, and together they took Jiang Ranhan back to the LZ Public Security Bureau.

On the way back, everyone's emotions calmed down.At this time, Chen Xingyang remembered the strange thing that happened to Yu Fan just now, and he asked curiously: "Old Yu, by the way, just now I saw that Jiang Ranhan pouring liquid nitrogen on you, and you are fine?"

Yu Fan said calmly, "Yes, there's nothing wrong with it. I even want to eat two chicken wings at this moment."

Chen Xingyang was even more surprised: "What's going on at this time? Isn't the liquid nitrogen two hundred degrees below zero? Isn't it filled with liquid nitrogen?"

Yu Fan: "That is indeed liquid nitrogen."

Chen Xingyang struggled even more: "We can't stand being splashed with a basin of ice water. How do you resist the temperature of several hundred degrees below zero? Is this your stunt again? Special physique?"

Yu Fan chuckled: "There is no special constitution. Strictly speaking, the power of splashing ice water is much stronger than that of liquid nitrogen."

Chen Xingyang's cognition was overturned, he was confused by Yu Fan, and he didn't know what to ask next.

Yu Fan continued to explain: "Because the boiling point of liquid nitrogen is very low, about -196°C, the body temperature of the human body is about 37°C, and the temperature difference between the two reaches 233°C, the temperature of the human body is too high compared to liquid nitrogen. , at the moment of contact, the liquid nitrogen will violently vaporize, forming a thin nitrogen film around the body, and the skin and liquid nitrogen are separated. Due to the poor thermal conductivity of nitrogen, the heat transfer between the body and liquid nitrogen is almost Stop so I don't get hurt at all."

Guo Na realized immediately: "Isn't this the Leidenfrost effect?"

Yu Fan: "That's right, the Leidenfrost phenomenon was first discovered by Dutch botanist Herman Boerhaf in 1732, and later in 1756, John Gottlob Leidenfrost made a more detailed analysis. In-depth research. When the liquid touches an object far beyond the boiling point of the liquid, the liquid will vaporize rapidly and violently, and a layer of vapor will be generated on the surface of the liquid. Due to the poor thermal conductivity of the vapor, the liquid and the high-temperature object will be separated. The boiling speed of the liquid away from the high-temperature object is greatly slowed down, resulting in the liquid being able to exist for a long time." Yu Fan's speech on popular science.

Guo Na: "To put it simply, because the temperature difference between body temperature and liquid nitrogen is too large, a natural protective film is formed on the surface of the body, and naturally it will not be hurt by extreme cold."

Yu Fan looked at Guo Na approvingly, smiled gratifiedly, and thought in his heart, if Guo Na could really follow him all the time, then he could really help Yu Fan share a lot of things.

　Although ice is water, it is a hundred times stronger than water.The more it is in a cold and harsh environment, the more it can reflect the characteristics of being as firm as steel.This is the first realm of water. - Nitrogen

　　
　
(End of this chapter)