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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Neil deGrasse Tyson, nautical heretic?
From: Frank Reed
Date: 2024 Dec 14, 08:44 -0800
From: Frank Reed
Date: 2024 Dec 14, 08:44 -0800
Sean, you wrote:
"rolls eyes 720°"
Ouch! I just hope your eyes are spinors. :)
Spinors?? Yeah, spinors are geometric objects that do not return to their original state when subjected to a 360° rotation [which sounds impossible, but so be it] and instead require a 720° rotation to get back to where they started. Fancy new math, huh? ...from 1913. Or was it 1897... even 1845?? For an elementary non-mathematical example, in the middle of a significantly mathematical account, read the "china plate" experiment here (after equation 17.15).
Frank Reed
