00:00If you held a blade of original Damascus steel, you'd immediately notice the watery waves that look like a unique
00:06fingerprint on the metal surface.
00:08This pattern didn't come from etching or coating, but from an internal structure that formed during forging at a relatively
00:15low temperature.
00:16Ancient smiths repeatedly folded the high-carbon wood steel, causing the carbon to arrange into microscopic bands, and forming a
00:24eutectic liquid between them that bonded the layers.
00:27During slow cooling, carbon nanotubes and cementite wires would grow, giving the blade both hardness and flexibility, and producing that
00:36legendary look that puzzled science for centuries.
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