continues:
Another key element for the electro-thesis is actually something that is missing. It's a riddle where schoolbook science is capitulating. Soot. In none of the many thousands of subterranean tombs and pyramid shafts was found a single trace of soot, as we are told by the authors of the electro-thesis, although many of these tombs are full of often colourful paintings. But the primitive light sources the Egyptians knew (candles, oil lamps etc.) are always leaving soot and are using oxygen. So how DID the Egyptians get their light? Some rationalists are arguing with mirrors, but the quality of the copper plates the Egyptians used as mirrors were not good enough for that.

interesting.