Posted by mack on June 21, 2019, 8:44 pm, in reply to "Seems like waffle."
'Potential energy fields such as gravity are not neutral at all: Gravity is not some a force that only allows a body to expend energy after energy (say, of climbing) has already been expended by that body. If two planets approach each other from entirely outside of one another's gravitational fields, they then will accelerate towards each other (kinetic energy). In physics, gravity is a force that can do work, it can move a mass through a distance. Energy required to create a gravitional field (a form of potential energy field): It is the gravitational binding energy of the atoms in the body.'
Yes, quite right. There's an even simpler and more earthly example of this embodied in something called a hydraulic ram pump, which could be considered 'free' energy - though no laws of thermodynamics are defiled as there is (obviously) an energy input and an efficiency of conversion below 100%. By using just gravity as the driving force and a mass (in this case water) funnelled through a collection of pipes and valves with an added pressure chamber arranged correctly, then the mass (water) can be sent back uphill by using the force of gravity as the only driver. These pumps are extremely reliable and have only three moving parts to allow correct operation (one initiating operation of a gate valve at the end of the assembly to allow for sufficient pressure to be attained in the pressure vessel, and then two simple clack valves which, working in tandem, create a back pressure that will pump water back uphill to a height of 10 metres per bar of pressure. The design is scaleable (just as the magnetic ideas appear to be) and I could knock one up in half an hour if you dump all the bits on my work bench.