Petrie Core Debunked
1:18:06–1:21:35 · 210s
Max argues the famous Petrie core’s grooves and taper match low-tech copper-tube drilling with abrasive, not high-tech machinery.
1:18:06–1:21:35 · 210s
Max argues the famous Petrie core’s grooves and taper match low-tech copper-tube drilling with abrasive, not high-tech machinery.
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