The three of them saw a table and clear plastic cups in the living room, as well as small balls of various sizes next to them. Mizukawa Yonetoku divides the ball into two parts. One part is in a cup, and the other part is on the table. He scrambles the ball with his hands and then uses his hands to prevent the ball from rolling down. He looked at the three of them and asked, "What do you think is different or the same between the cup and the table?"

The six sons came to and Margarita and said: Duenas has the longest name and should be answered first.

He didn't shirk it, and began to talk about it: the balls in the table and the balls in the cup are all empty and piled up, that is, there is still some space between the balls that are piled up. This is due to the shape of the sphere of the ball, and there is basically no way to change it. Due to the sliding nature of the balls, it is only possible to accumulate on the surface space of the table, which has no boundaries. What is decreasing accumulation? It's that the shape of the pile is very similar to a vertical cone. The balls in the cup are stacked, and the stacked volume is more than the decreasing stack.

There is also a difference that on the table, the big and small balls will be underneath. In the cup, whether the large ball is on the bottom and the person puts the ball in the order of the cup.

Liuzifeng said: On the last point, I don't agree. I think that the big balls in the cup will repel the small balls because of the gravity and eventually fall to the bottom. This presents an overall distribution of small at the top and large at the bottom.

Margarita said: Not exactly. If the number of balls in the cup is not large, it probably does not exceed 10. Why? The space in which the small ball at the bottom moves determines whether the large ball will fall to the bottom when the cup is at rest. First of all, we need to understand that when the big ball is going to reach the bottom, the small ball at the bottom must provide a space for it to exist. So, the little ball at the bottom has to move upwards. We know that the ball is confined to the confined space of the cup, and whether the small ball at the bottom can move upwards depends on the volume of the ball inside the cup. When the volume is larger, the smaller ball at the bottom is more difficult to move upward. And its probability is almost zero and negligible.

When the cup is at rest, as long as the number of small balls is small, the large small balls will fall to the bottom. Otherwise, it will depend on the order in which the person puts it in the cup.

Mizukawa suddenly shook the cup a few times, and said: What about now? We have uploaded on premise, so what is the difference between uploading and stacking?

The two looked at Dueñas, and he understood: I watched a video and knew the phenomenon of big and small. At this time, the big balls are on top.

Uploading refers to loading an object on top of it, and theoretically any object can be a carrier. For example, the bearing body of a chair is the floor. Stacking, on the other hand, refers to adding different objects to the top either in the same way or not. Accumulation also has a load-bearing body, which can likewise be all objects. However, uploads are divided into internal and external loads. Internal load can be divided into static load bearing and motion loading. And the same is done in-house. From the point of view of use, there is not much difference between uploading and stacking. So, you can use any of them.

Margarita shook her head and said, "This conclusion is too arbitrary!" With just a few shakes, you can conclude that all the big balls have landed on the ground? Judging from the few times Mizukawa Rice shook just now and the number of large balls added, the big balls have not all fallen to the bottom.

Liuzi Fenglai said: Not comprehensive. It should be said that some of the big balls have landed on the bottom. And what about the other big balls? In fact, a long column of large balls is formed inside the cup. And the big balls are all inside this long column. Even if it is shaken completely, it is impossible for the large balls to fall all over the bottom. After all, the bottom is finite, and the big balls don't have enough kinetic energy to repel the small balls on the bottom, so they get together.

All three of them said: It seems impossible for all the big and small balls to get together!!

Liuzifeng said with confidence: Science is inherently counterintuitive. Isn't there super-cold water and 105 degrees Celsius ice?

The three of them were speechless, and they went about their own business. Liuzifeng came to look at the ball in the cup and left.