In a slightly differently configuration, it is also known as Heron's fountain.

Heron's fountain is not a perpetual motion machine.

Larry has a Zen rock garden and has constructed his own Heron's fountain.

Heron's fountain is built as follows:

Heron's fountain is a hydraulic machine invented by the 1st century inventor, mathematician, and physicist Heron, also known as Hero of Alexandria.

(Heron's fountain)

Heron studied the pressure of air and steam, described the first steam engine, and built toys that would spurt water, one of them known as Heron's fountain.

An example of Heron's fountain, built by Larry Fleinhardt, was featured in the 8th episode (titled "Tabu") of the 4th season of the television show Numb3rs.

Furthermore, unlike Heron's fountain, which requires that the air supply container be manually emptied of water, geysers have an analogous "air supply container" that is steadily heated by geothermal energy.