Power Drills in Ancient Egypt? Petrie Core Spiral Solved
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Did ancient Egypt use a mysterious lost ancient technology that science can't explain? Not necessarily. In this video we check if Petrie's core number 7 has a "continuous spiral".
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=== Sources ===
An analysis of Petrie's core number 7, the subject of many theories, due to the peculiar pattern of grooves left on it after drilling.
Books
On the Mechanical Methods of the Ancients - F. Petrie
Experiments in Egyptian Archeology - D. Stocks
Lost Technologies of Ancient Egypt - C. Dunn
YouTube:
• ADVANCED ANCIENT EGYPTIAN TECH UNCOVERED |...
• How to use a diamond core drill
• Diamond Core Bits vs. Carbide Core Bits - ...
• The Story of the Enigmatic and Mysterious ...
• Granite Cutting and Drilling
Images (Wikimedia Commons):
Standing_wave_on_a_slinky.jpg
Interior of the Petrie Museum.JPG
A set of drill bits in a workshop - George Chernilevsky
Edison Gold Moulded record made of ... 1904 - Phonatic
Other images:
Spiral Staircase - Rémy Penet / Unsplash
Websites:
Cylinders, 78s, LPs and CDs by Oliver Seely
http://www2.csudh.edu/oliver/smt310-h...
@00:00 Start
@01:20 The core's history
@02:29 A review of past claims
@08:00 Logical flaws
@13:45 3D replica of the core
@15:25 Spiral tendency
@19:20 Continuity
@21:06 Conclusion