Today, as you deduced from the title, I will again debate a very controversial topic, namely “perpetuum mobile” systems. It is known that such ideal systems exist only in theory and have no applicability in practice, or are even totally unattainable and derided.
In this article I will present a theory that may work, but know that I have not tested it.
It is about the capillary phenomenon that appears on the surface of the liquids.
For this experiment we will use water, a basin, a thread or twine and a capillary tube, enclosed in an enclosure that will not allow the evaporation of water and if it still evaporates inside the vessel (due to the temperature fluctuations of the environment) to reach back in the collecting basin.


I attached the image:


How could such a system work?
The basic idea is to permanently keep the water moving through the capillary tube. It is known that in a capillary tube sufficiently thin the water rises to a considerable height (for example: in a tube with a diameter of 0.2 mm the water rises 7 cm), so we can think of a system as shown in the image above.
The capillary tube is submerged so that the water rises into the tube enough that when we connect the to the top of the tube a thin rope (note that the free end is below the top of the tube), we get the free fall of the water. We close everything in an enclosure and thus obtain a system that remains in working order, theoretically, for a long time.
I hope you liked this experiment, it’s just a theory, though, I’m not trying to prove anything here.

Thank's for reading! If you like Science Fiction stuff please check out my other posts at: Science Fiction Blog by Manasse