At the moment when he took a taper to give of the divine fire to all of those in the church who had torches, scarcely had he come out of the tomb, when he saw the church suddenly filled with a divine light. The faithful were standing on the right and the left, some near the door, some by Calvary, others near the cruciform chain suspended from the ceiling and all around which they had hung their lamps, the chain, that is, which passes for representing the center of the world and which is there as a sign, so that all men might be astonished at the apparition of the divine fire. Niketas, 947 A.D.
The same source also tells that a governor brought a copper wire instead of a wick, in order that it won't ignite and the whole thing would fail to occur. But as the fire descended, the copper burned. The descent of this fire from above on a day, which recurs after a specified time span, gives us occasion to be astounded..Muslim historian al-Biruni, 1000 A.D.
The the 11th century Christian writer Abelfaragius quoted a Muslim detractor of the Easter Eve ritual
. . . When the Christians assembled in their Temple at Jerusalem to celebrate Easter, the chaplains of the Church, making use of a pious fraud, greased the chain of iron that held the lamp over the Tomb with oil of balsam; and . . . when the Arab officer sealed up the door which led to the Tomb, they applied a match, and the fire descended immediately to the wick of the lamp and lighted it. Then the worshipers burst into tears and cried out Kyrie Eleison, supposing it was fire which fell from heaven upon the Tomb; and they were strengthened in their faith.
Somehow I think the Greeks can make an electrostatic discharge happen (and did so before the science of electricity was known) that lights the lamps through ritual that is not deceptive but can be explained through sceince. The blue fire that does not burn is "ball lightning", IMHO.
I'm sure it is difficult to have faith from outside the church and I don't blame anyone here for their inabilities. Orthodox Christianity is an experiential faith, this miracle is an exclusive one, and it is difficult to leave behind what you have relied on for your entire life - weak, human, logic and rational thinking. It usually takes years within the church to see how faulty our reliance on ourselves truly is, and to heal the schism between our mind and hearts. I hope someday you are able to experience a taste of this.