The Lighthouse of Alexandria
The Ancients
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The Faros of Alexandria on the Faros Vars
The light was probably a half perhaps in the center of those columns protected by the roof from bad weather. One possibility would be putting the mirrors on the landed side where you didn't need the light or another possibility would be to suspend the mirrors above the fire at a 45 degree angle and then reflect the light out. It's certainly possible that the bitumen would have probably come from the Dead Sea not from Mesopotamia because the main source at that time was the Dead Sea. And so what's all this about mirrors too? Well there are descriptions that there were bronze mirrors used to to increase the light output.
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