Chapter 274 274 Siphon Principle

"Let's go, let's bury the water pipe first." Xia Tian turned and prepared to go to the river. "Leaving the pipe exposed like this will soon rot. Aren't you curious about why? I'll take you to see it and you'll know."

Half of the previously buried bamboo pipes are still exposed to the air. If we directly backfill them with soil, there is no material on hand that can be used as a preservative, so we can only find another way to protect the pipes.

The method Xia Tian thought of was to raise the ground with sand and gravel, then fill it up, and then press it down with stones to prevent it from being destroyed by unsuspecting small animals.

Of course, before that, she still needs to explain to everyone what the "siphon principle" that can draw water is.

To explain it in professional terms, it is the communicating vessel plus atmospheric pressure, and the purpose is achieved by adjusting the high and low pressure differences therein.

However, such an explanation is very blunt and difficult to understand for people who do not have a foundation in the corresponding subject.

Therefore, the best way is to make a small model and demonstrate again what happens in the water pipe.

Moreover, it is best to let the other party do it themselves, so as to deepen the impression.

"Do you remember the curved bamboo tube I asked you to make?" Xia Tian found another, thinner bamboo tube and said, "Now, hollow out the inside of it, and then make a smaller one exactly like the big one."

Si Ye took the bamboo tube and looked at her with a puzzled look.

Without saying anything, he just followed her request and made a small "U"-shaped tube in exactly the same proportions.

The two ends of this tube are not symmetrical, but one end is higher than the other.

In order to provide a place for the hemp rope used for fixing, the shorter end should be about halfway between the higher end.

"Now, let me demonstrate how water flows under pressure." Xia Tian brought a basin of water and placed it on the edge of the kitchen stone table.

She inserted the short end into the basin and extended the long end, facing outwards to the open space beside the stone table.

"Come here, just like you did just now, vacuum the air out of the tube and see what happens next." Xia Tian handed the tube in her hand to him and waited leisurely for the experimental results.

Si Ye did as he was told and took a deep breath of the air in the tube—

Clear water quickly flowed out of the bamboo tube, and the water pressure conditions were exactly the same as what I had just seen outside.

Without pressurization, the water flows out directly until the water level in the food bowl drops below the connection surface of the water pipe, and the water in the pipe stops.

This is a still stone basin, and the amount of water it can hold is limited.

But if it is in a natural river, the water in it is inexhaustible.

In other words, as long as the water diversion is successful and the other end of the pipe is still below the water surface, there is no need to worry about the water flow and water volume.

Xia Tian said at the beginning that walking on the bamboo tube is clean and convenient, and it will not be affected by the water level and terrain. There is indeed no problem at all...

"You are really smart. You can even think of this method. I admire you." Si Ye was completely impressed. This was a wonderful idea that he had never thought of.

If we dig a ditch directly according to his method, not only will it be very cumbersome, but if the water level drops in the middle of the process, the water flow will also be affected.

It is not like going directly through the bamboo tube even if it is covered with mud. It takes water from the clear layer of water without being covered with mud. It is clean and convenient, and it is indeed the best choice for water diversion.

(End of this chapter)