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| Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Cold sun rising
On Sunday, November 15, 2015 at 7:18:26 PM UTC-5, Ed Huntress wrote:
The ancient Greeks knew the earth was roughly spherical, back to at least the 4th century BC. That's what *we* learned. Ed Huntress But the consensus in the 4th century BC was that the earth was flat. It was only a few that believed the earth was spherical. If you learned that most greeks in the 4th century believed the earth was a sphere, then you had a poor school. Dan |
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