We humans engineer at the chemical level, so when we want to make some new metal alloy using tin, for example, we buy tin that's comprised of the naturally occurring distribution of the 10 stable isotopes of tin that we mine here on the Earth. So this is what we mean when we say that human technology is only using the 80 stable chemical elements - for the most part our technology is much too crude to care about the ratio of isotopes that occur naturally in the ore that we mine for industrial uses - we just exploit the bulk chemical properties of elements, not their isotopes. Obviously fission and fusion technology has been the exception to that rule.If microbiologist Garry Nolan is not seeing drastically more isotopes in the sample, than one would normally expect, how would he draw conclusion that alien civilization is using 253 isotopes? True, he never specifically says how many isotopes are there in the apparently metallic sample, but where is he getting the idea about 253 isotopes if not from the sample?
Vallee has talked in the past about a sample of material that was found to contain three different isotopes of one element...but those isotopes were perfectly distributed in thirds within that sample. That doesn't happen in nature, ever. So somebody made a material that required an even distribution of all three isotopes of one element, for reasons unknown to us. That indicates a technology which isn't just exploiting the chemical properties of the 80 chemical elements, as we humans do, but rather a technology that engineers with all 252+* stable isotopes of matter. That's what he's saying: somebody has a more nuanced and sophisticated materials science than we do, because we're only now beginning to see uses for isolating and choosing specific isotopes of the elements to achieve industrially useful effects.
I hope that clears it up - I don't know how to say it more plainly than that.
This is a classic example of confirmation bias. We can only speculate about the nature and function of extraterrestrial technology - you're drawing connections based on extremely tenuous data because you want the data to fit your explanation. You might be right, but you're jumping to all kinds of conclusions here. The color radiated by the materials may have (and probably do have) nothing to do with EM radiation being pumped into metamaterials - it could be an ionization effect, or a thermal effect, or something else entirely. This is why I always argue that arriving at a viable theory of operation is more useful than trying to work backwards in order to make sense of the data.Experimentally confirmed idea that isotopes can be used to dampen thermal oscillations perfectly matches with other observations that UFOs are pumping the hull with EM radiation to cause gravitational change. Clues come from witness observations of alien spacecraft and their spacesuits. EM radiation that UFOs pump into the hull is directly proportional to the energy potential of the crafts, hovering at low altitude when red/orange, moving fast at high altitude when bluish/white. Similar applies to their spacesuits.
It sounds like you're referring to these two papers:Few years back, while we are TheParacast.com forum, you came up with a paper that talked about (if I remember correctly) creating negative energy or negative gravity (?) by pumping a metamaterial with EM waves.
“Electromagnetic stress at the boundary: photon pressure or tension?” Shubo Wang, Jack Ng, Meng Xiao, and C. T. Chan, 2015
https://arxiv.org/ftp/arxiv/papers/1510/1510.06227.pdf
“Electromagnetic stress tensor for amorphous metamaterial medium,” Neng Wang, Shubo Wang, Jack Ng, 2018
https://arxiv.org/ftp/arxiv/papers/1801/1801.00942.pdf
Those papers show how it's theoretically possible to increase or decrease the mass of a metamaterial by engineering the EM stress-energy tensor equation of the material in a specific way. But the mass of such a material could never drop below zero in this manner because it appears to be impossible to drop the mass of any collection of positive matter below zero and thereby produce negative gravitation (as I understand it, the stress-energy tensor offers no solution where the stress, and momentum, and momentum flux, etc., terms can produce a negative value greater than the T^00 energy density term.
Frankly, the more I've thought about it, the more relieved I am that we humans haven't figured out how to emulate AAV field propulsion technology yet. Given the known facts of military history and the current state of geopolitical tensions, I think that if we did know how to achieve gravitational field propulsion then there would be a >90% likelihood of an extinction-level global thermonuclear war within 25 years. So if somebody does figure out how to do it with achievable technology, I would beg them on my knees to stfu about it.
* There are estimates of the number of stable isotopes varying from 252 to 256, which probably depend on your definition of "stable."