So I totally understand when rule says _free energy_ it means _over-unity devices_ which claim more energy output than net energy (which includes energy equivalent of any mass to be converted) input.
But I think just saying 'discussion of free energy prohibited' can confuse ppl cuz _free_ can just mean cost free to user! So just for examples of totally mainstream energy sources, after initial investment;
Nuclear.
Direct solar (like photovoltaic cells and solar water heaters).
Indirect solar like fossil fuel and fluid dynamics (so wind and hydroelectric).
Geothermal.
And even just heat pumps.
All provide some energy free of cost to operator! So sorry to sound like I'm splitting hairs! But I say present wording can scare ppl with legitimate questions away! Tnx!
Edited by @Aleph(0) to expand text message specific abbreviations.
But I think just saying 'discussion of free energy prohibited' can confuse ppl cuz _free_ can just mean cost free to user! So just for examples of totally mainstream energy sources, after initial investment;
Nuclear.
Direct solar (like photovoltaic cells and solar water heaters).
Indirect solar like fossil fuel and fluid dynamics (so wind and hydroelectric).
Geothermal.
And even just heat pumps.
All provide some energy free of cost to operator! So sorry to sound like I'm splitting hairs! But I say present wording can scare ppl with legitimate questions away! Tnx!
Edited by @Aleph(0) to expand text message specific abbreviations.