Mizukawa brought a paper cup and filled it with water. Then put a straw upside down. Suddenly, he asked: Will there be oxygen in the water if this is done?

Liuzifeng looked at the cup, and then at Mizukawa rice. After pondering for a minute, he said: Isn't it whimsical to want to add oxygen to the water just like that? Although the air is fluid, very little oxygen enters the cup. Even then, the oxygen inside the straw only sinks to the bend. Wait until the oxygen in the straw fills the upper straw before it actually enters the water in the paper cup.

Dueñas does not look at paper cups: the most important thing about the straw is that it is bent. Turn the straw upside down so that the upper tube is under more pressure than the lower tube. However, only the lower half of the lower tube has oxygen. The straw is upside down, but it can still suck up water. So, straws don't help in absorbing oxygen.

If a small hole is made in the top tube, the water in the straw will be diverted briefly. For a very short period of time, the air pressure at the shunt is less than the air pressure in the lower half of the downtube. At this point, the pressure sends oxygen to the shunt. In this way, the purpose of oxygen delivery can be achieved.

Margarita laughed and said, "Why bother! Just stir it from time to time. Stirring causes the water molecules to move violently, accelerating the rate at which oxygen is dissolved on the surface of the water. There is also a sudden decrease in atmospheric pressure in the top tube, which causes a large amount of the straw to enter the paper cup.

Judging by the way you look, you must think that this method is also troublesome. No hurry, I have a way. Put a small piece of ice in a paper cup and let it melt well. As the ice continues to melt, the water molecules move within a certain degree. As a result, the water surface is constantly changing. In turn, the amount of dissolved oxygen increases.

If you still don't think you can do it, I have a trick. Glue the tape to the mouth of the straw and make a small hole in the center of the tape. At first, there is very little air in the lower half of the lower tube, causing the water inside the straw to rise. When it rises to the small hole, it suddenly retreats downward. In the process of retreating, the oxygen is carried into the paper cup.

Mizukawa said, "I think it is possible to deliver oxygen without having to punch holes." The bending of the straw must have an effect on the straw and the water, but I don't know what it is.

All three of them said: there is nothing special about bending, it is just a shape.

Mizukawa insists that bending the straw gives the straw a shape force, and the shape force may change the water. And then to achieve the ultimate purpose of oxygen delivery.

The three of them also said: The shape is ethereal and elusive. Whether it has properties or not is difficult to say, but it certainly does not help in transporting oxygen.

Mizukawa continued: Didn't we discuss the shape force, have you all forgotten??

The three of them said, "Indeed." However, we didn't discuss why. Isn't it always inconclusive about what the shape force is? If you don't believe it, just wait a few days. I remember you weren't doing a little experiment with sprouting in water, so wait until the results come out!

Mizukawa is still unrelenting: I trust my own judgment, and the experiment will be successful. Every great idea is insignificant before it is formed, and I will surely make the shape famous in history. Choosing such a small question, I knew that there would not be much of a wave of thinking. However, this time it made me re-understand and rethink old concepts and principles. Either way, it's worth remembering today. What will happen on a cloudy day, only a cloudy day knows. Let's look forward to cloudy days together!