A simple experiment that to prove the potential energy is unlimited.

[Pirate88179]

Phillip:

They really are cool little devices, these birds.  Mine is still running and doing its job with no additional energy input by me except to add a little water to the cup every few days.  I don't know if you checked out my video I posted above but this thing does the job I need.  Now, if one wanted to close the loop, it might be possible to set one of these birds up in a terrarium of sorts such that when the water evaporates, it is collected on the inside surface and somehow directed back into the cup upon condensation.  Then, you would not have to add water.  That is not why I am using it but this thought came to me while working with it.  Thanks.

Bill

[Zhang Yalin]

The soft have no use. It's result make me myself confused.

[hansvonlieven]

Bill and Phil,

The device you are talking about is simply a primitive heat engine. For a rotating version check out Minto Wheel

Hans von Lieven

[Zhang Yalin]

In order to distinguish Work with Energy, it is necessary to establish a new mechanical unit (Ya). 1Y(Energy)=1N(Force) •T(1second)=1J(Work)/V(1m/s)
It’s obvious that Force, Work, Energy is the same physical quantity described by different time, speed and distance.

[Pirate88179]

Zang:

We already have that, it is called horsepower.

Bill