If you are unable to read the hieroglyphs, might I ask how you are able to announce that the text does indeed refer to the 'technology' depicted in the relief directly beneath it?
Frank D who posted on 29th April, time stamped at 15:33, has already explained in some detail what the meaning of the hieroglyphs is.
Needless to say, the text does not include any reference to 'technology' or plasma tubes.
As I had posted myself much earlier in this discussion, the hieroglyphs narrate the creation myth of Atum. If you know the myth, the image makes complete sense. One is a reflection of the other. No enigma to solve.
Where do the walls speak of "drawing down energy from the sun ... that pushes back death?" and how can you claim this if you do not read hieroglyphs and therefore cannot confirm this for yourself?
I'm sorry if you feel that this is 'sniping' at you because that is certainly not my intention. I am simply asking questions which others will inevitably ask you when you are expected to attest to the credibility of the claims you are making about the reliefs at Dendera being depictions of plasma tube technology.
I have already commended you on your ability to create a plasma tube which is similar in shape to the images on the reliefs, but if the shape of the 'tube' was different on the relief, you would simply have fashioned yours to mimic the image. The fact that one resembles another is not, to my mind, proof of the existence of any such plasma technology 2,000 years earlier.
However, you cannot simply ignore the accompanying hieroglyphs which tell a story involving a lotus flower - which you can see; the snake - the birth of Atum and the bubble of air from which the Universe was created from the primordial waters of Nun. These individual pictograms are the 'light bulb' you see as one 'object'. The hieroglyphs don't enable us to "push the curtain back even further", as you say; in effect, the hieroglyphs serve to close the curtains on this discussion because they tell the story of creation.
I understand that the hieroglyphs themselves present you with a puzzle to solve. The puzzle, to my mind, will be how you convince others of the credibility of the plasma tube idea which is itself undermined by the accompanying written text.