After giving it some thought, the best tests boil down to the fundamental concept of what RMS voltage itself is based upon.
This simply means that all that needs to be done to reasonably test the myriad claims is 1) how fast will it make a cup of coffe? 2)What temperature will it be? This alone destroys many claims.
For those attempting to claim something at low voltage- Guess what- they make a 12 volt coffee maker as well.
This is the simplest test to weed out those that deserve some closer scrutiny, and those claims that are false.
Oh, I can get into measurements of light output, but for most people- they do not have the equipment. They are too trusting of their eyes as well. Not to mention a fair number of those who do have the equipment do not know how to use it correctly for an honest measurement.
And in all sincere honesty- NONE of the free energy systems I have been critical of thus far can pass the test of my coffeemaker.
In short- unless the parts are given to you for free- “it ain’t free energy…”
Drei Espresso, bitte.