At 08:34 PM 10/24/96 +0100, you wrote:
> I've been waiting for the opportunity to share
>this technique with the world. It looks like the time
>has arrived!
Too bad its all wrong- some time checking would have been better for us all.
There may be some out there that believe you.
>
>. You've seen the books
>and TV reports, stating the accuracy down to the limits
>of our modern-day instrumentation!
A prime error. they were not that precise, and the pole has shifted since
their day.
>
> Third, mark the end-point where the shadow meets
>your surface.
>
> Fifth, mark the end-point of the shadow when you
>return.
> Finally, draw a string between the original shadow
>mark and the final shadow mark.
>
> You now have a precise line which runs east and
>west.
Wrong again. the line will be E-W only if you use two times equally before
and after Solar noon. If you knew that, you could use ONE shadow to point
due north at noon. (Solar, not clock)
> It's amazing
>
> Technique author unknown
Just as well
Bill- pondering the persistance of erroneous legend
Bill Aycock --- Persimmon Hill --- Woodville, Alabama, USA
--- (in the N.E. corner of the State)
also-- W4BSG -- Grid EM64vr
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: K7LXC@contesting.com
Sponsored by Akorn Access, Inc & KM9P
|