NavList:
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






