[![I assume the area of horizontal cross section of beaker at the top to be way larger than the area of horizontal cross section of pipe][1]][1] I think at the same depth pressure of a specific liquid which are connected to each other, as in manometer, should be same. But, in siphon that does not seem to be the case, which is the reason for my question. Why at the bottom of the pipe of siphon pressure is 1 atm? I know that it is said that pressure is provided by atmosphere. But, why do not the pressure increase because depth increases? [1]: https://i.sstatic.net/0F4aw.png