Fwd: Re: Cob: second structure spacing

[David Knowlton]

someone a little smarter sent this link to me. (it was ptolemy,
not archimedes)

dk


>To: <pilot1ab80 at hotmail.com>
>Subject: Re: Cob: second structure spacing
>Date: Thu, 20 Feb 2003 13:58:01 US/Pacific
>
>david wrote:
>
> >you can determine this by gauging the shadow
> >from a stick for a whole year, or you could consult
> >astronomy on the net and figure out your interesting
> >mathematical problem!
>
>Here's my personal favorite:
>
>www.susdesign.com/sunangle
>
>You just have to know your longitude and latitude.
>


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