Modern day man using a fresnel lens & focused sunlight to melt granite in less than 20 seconds at 2,300 degrees fahrenheit. Did the ancients use focused sunlight to manipulate & shape stone? Credit: Megalithic Marvels
Modern day man using a fresnel lens & focused sunlight to melt granite in less than 20 seconds at 2,300 degrees fahrenheit. Did the ancients use focused sunlight to manipulate & shape stone? Credit: Megalithic Marvels
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