Chapter 1772

"Tell the dean that they are in the laboratory."

The student said respectfully.

Zhang Feng thanked and went to the laboratory. The laboratory is a place for people to do experiments. Usually Ma Zhou and Hao Chujun will be here.

Just entering the door, I saw them lying on the table with glass bottles in their hands. I didn't know what they were doing.

"Ma Zhou, Hao Chujun, what are you doing?"

Zhang Feng asked suspiciously.

They suddenly turned their heads and looked at Zhang Feng with a surprised look on their face: "eunuch, why are you here?"

With that, they quickly put down the glass bottle in their hands and walked to Zhang Feng.

"I came to tell you something."

Zhang Feng looked at them and smiled faintly: "I need you to study the facilities for heat conduction power."

They frowned and looked at each other, a little confused.

"Eunuch, what do you mean by this? Can you explain it?"

Ma Zhou scratched his head and didn't understand.

Zhang Feng glanced at them and explained patiently: "In short, it is the flow of high-temperature gas or the change of gas composition and the interaction between gas and objects. What happens to a thing when it meets a strong air flow? For example, why can a paper kite fly in the sky is affected by the air flow. Now I need you to make a device to transmit the hot gas to the other side."

"This..."

Ma Zhou and Hao Chujun were even more confused.

Zhang Feng did not blame them, but continued: "in fact, this is not very difficult. You go to prepare oil lamps, tweezers, iron wire and paper. I'll do an experiment to show you."

As soon as they heard that there was an experiment to see, they immediately ran away.

After a while, they took the oil lamp, tweezers, wire and paper and put them on the table.

Zhang Feng will take out the torch to light the oil lamp, then draw out a cigarette from his waist, flash past the oil lamp, take a deep breath, spit out smoke, and look at the two: "look carefully."

"Cough... OK, Grandpa."

Ma Zhou covered his mouth and nose and said hard. Obviously, the smell of the cigarette choked him.

Hao Chujun didn't get there either. He didn't tighten his mouth and nose and nodded vigorously.

Zhang Feng shook his head with a smile, held the cigarette in his mouth, picked up the paper and iron wire with both hands, and passed the iron wire through the paper with a space of two centimeters in the middle.

After all this, he clamped one end of the wire with tweezers and heated the other end on an oil lamp.

After a while, the wire turned black, and then slowly turned red until it turned red.

"Red, eunuch, red."

Ma Zhou exclaimed excitedly.

This is the only thing interested in academic paranoia like him.

"I know it's red."

Zhang Feng grinned with a cigarette end in his mouth and spoke a little unclear.

With that, he took the wire down from the oil lamp and looked at Ma Zhou solemnly: "touch the difference between the two ends of the wire."

"Touch it?"

Ma Zhou is a little confused.

Although he is silly, he is not stupid.

This fucking touch won't burn to death?

He shook his head in refusal.

Seeing this, Zhang Feng showed a harmless smile: "listen, I'm doing it for you. You can only touch it to experience the experimental results and remember it forever. Besides, the iron wire is not very hot. Look, don't I take it?"

Ma Zhou glanced at Zhang Feng suspiciously. He was fighting a great battle in his heart. Finally, he stretched out his hand.

"Hiss..."

A sudden pain came and he jerked his hand back.

Looking back, a black mark was printed on his hand.

Ma Zhou glanced contemptuously at Zhang Feng.

What if it's not hot?

It's all a lie.

Believe your evil.

Zhang Feng didn't know his careful thoughts, but handed them to Hao Chujun.

"Would you like to touch it?"

Hao Chujun quickly waved his hand and took two steps back: "I'd better forget it. It's OK for Ma Zhou to remember the experimental results."

Zhang Feng nodded with a smile and looked at Ma Zhou: "Ma Zhou, in fact, I'm helping you. Look, can you think of this experiment when you see this scar on your hand in the future? Now let's talk about the feeling of this experiment?"

Help me?

Ma Zhou rolled his eyes.

However, on second thought, there seems to be nothing wrong.

It's also a good thing that you can always remember this experiment.

He touched his hot hand, endured the pain and said solemnly, "Grandpa, I don't feel anything. I'm very strange. Why don't you feel hot, and I feel hot?"

Zhang Feng put down his tweezers, took a deep breath of a cigarette, sandwiched it between his fingers, and showed a meaningful smile: "That's why I let you touch it. The side you touch is roasted by fire. The temperature is very high. According to the conduction temperature speed of iron, my side is already very hot. However, the temperature is never as high as yours. The temperature is also a truth. As long as a high temperature is generated at one end, it will be transmitted to the other end quickly. Both of these two principles are the same. Now do you understand ？”

The two nodded, and Ma Zhou even forgot the pain of his fingers.