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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: 1421 The year China discovered longitude
From: Trevor Kenchington
Date: 2004 May 9, 09:19 +0000
From: Trevor Kenchington
Date: 2004 May 9, 09:19 +0000
Geoffrey Kolbe wrote: > Well, I am not a historian. I think it would interesting and fun for some > members of this list to think about how the ancients might have gone about > this and then actually try and measure their relative longitudes using > methods developed individually or collectively. I even think it would be > interesting enough to write up the endeavor for publication. I thought about doing that. However, my method would start by clearing and levelling an "observatory" some 30 metres or more across. I have enough land here and without light pollution to the southward but I'm not about to import enough fill to get it level -- nor to spend hundreds of man hours with a shovel doing the levelling! Unfortunately, scaling the whole thing down would lose the precision, which would make the trial a bit pointless. Trevor Kenchington -- Trevor J. Kenchington PhD Gadus@iStar.ca Gadus Associates, Office(902) 889-9250 R.R.#1, Musquodoboit Harbour, Fax (902) 889-9251 Nova Scotia B0J 2L0, CANADA Home (902) 889-3555 Science Serving the Fisheries http://home.istar.ca/~gadus