Siphonage refers to the use of the effect of the height difference of the liquid level, the liquid is filled with an inverted U-shaped tube structure, the high end of the opening is placed in a container filled with liquid, the liquid in the container will continue to flow out through the siphon from the lower position of the opening.
According to the above definition, the following are not part of the siphon principle:
When Xiao Wang is changing water in his family's aquarium, he squeezes the air out of the tube and then inserts the tube into the water, which keeps the water flowing out