1. double pendulums are known to be caotic

check this isochronos one:

2.

3. theres something i wonder:

many labs have a chaotic double pendulum to show chaos concept

why no lab has one of this to show resonance concept?

actually in the simulation you see in the video the case of the left where theres resonance lasts much longer than the case of the right where theres no resonance even starting at lower height, in the simulation

myself i like to believe in conservation of energy but dont legends tell tesla did marvels with resonance?

well gotta a new project to build now

edit:

the thing is pretty interesting, for example if you throw the double pnedulum out of phase which should make it chaotic it has a strong tendency to end up perfectly resonating

do you think noone thought of this before for what is known?

4. Resonance is simply the efficient transmission of energy; allowing waves to propagate in phase so that less of the energy is converted into heat. It also has to do with a systems ability to oscillate at a certain frequency more or less readily; The Q factor of the system effects this. One end allows for easier vibration but at the cost of frequency range, the other allows for greater frequency range at the cost of transmission efficiency.

No energy can be kinematicaly generated this way, unless of course you use the resonance to sap energy from another source, but that is not 'out of nothing' energy generation.

5. conservation of energy is the only principle i like since some how implies conservation of info, is enough to think something as for it to get coded forever in the universe, so dont think bad.

still that i and a majority believes it doesnt neccesarily make it true

the oddity i see here:

this sincrhronous double pendulum apparently doesnt exist, i googled a lot

i challenge anybody to show me a link describing this thing

thats why i dont mind talking about free energy and know it wont be moved to pseudoscience,it would be censoring a new interesting thing on pendulums resonance

and thats the crux:

why such a simple but interesting thing doesnt exist?

answer a: none thought it before

answer b: the simulator is wrong doesnt really work

answer c: is a suppressed free energy device based on resonance