Chapter 25 The Evaporation of Water

A drop of water fell to the ground and did not evaporate for a long time. The four of them couldn't help but fall into deep thought when they looked at this drop of water, and when Mizukawa saw this, he said: Since there is a drop of water here, we might as well discuss water. More precisely, the evaporation of water. I'm wondering if the evaporation of water is flat or three-dimensional, I wonder if you have any answers?

Liuzi Fenglai was the first to speak: water is three-dimensional, and its evaporation must be three-dimensional. If it's flat, then why don't we see its evaporation? We didn't find out that yin evaporation is three-dimensional, and it is also short-lived. Due to the fluidity of water, there may be a difference between part and whole when it evaporates.

I know some people would say that the heat possessed by water molecules is uneven and their contact area also varies greatly. However, some water molecules have equal amounts of heat. They will evaporate at the same time, creating a plane that looks like a plane. But let's not forget that water molecules are still three-dimensional, not flat.

"That said, but we can make the evaporation of water flat," Duenas said. Science comes from experience, but scientists can't go through everything. We are three-dimensional here, and everything is three-dimensional. However, three-dimensional objects are made up of one-dimensional and two-dimensional objects. As long as this is the case, the three-dimensional object can be reduced to a two-dimensional one.

Mizukawa began to say again: Does the evaporation of water have an effect on the entropy in water? Does evaporation change its entropy? I'll give you questions, and you'll give me the answers.

Margarita is positive: entropy is the degree of chaos of an object. The increase in heat will inevitably increase the degree of chaos in the water, that is, the entropy will increase. If you divide the water into two parts, the entropy of the part near the outside is much greater than the entropy inside.

Mizukawa said: It's still a matter of evaporation. Water evaporates into the air, so what is the trajectory of water molecules?

Margarita was still positive: the question was too general, how could it be answered? I think you're referring to the trajectory of the water in the first period of time after it has been evaporated. Like a drop of water here, what does the trajectory of evaporation look like above the room? Its trajectory is a continuous curve with multiple peaks and valleys. The reason for this is that the water molecules interact with each other, causing the trajectory to become bent. Even if water molecules are in the air, they still have an effect on other water molecules.

Liuzifeng shook his head vigorously: No, it's not. The trajectory of the water is a polyline. First, the water molecules rise vertically against gravity. When it moves to the top of the room, it is bounced down for a distance, and then changes direction and flies out of the room. On the outside, the water molecules rise directly upright. Since then, the trajectory has never changed.

Liuzi Fenglai said: It's even more wrong. When the water molecules move upward, they hit the air, and the air gives the water molecules a certain resistance. Due to the uneven distribution of air, the trajectory is neither a curve nor a polyline. Rather, it is a mixed line in which there are curves and straight lines.

Mizukawa was a little tired at this time. Having said it a few times, this time it was my turn again. What to say? Mizukawa hesitated for a while and said: Today's problems seem to be a bit much, I don't know if everyone is adaptable. In my opinion, this time it was quite rewarding. Next time, let's try to make a more convincing point.