[geocentrism] Re: Tides
- From: Paul Deema <paul_deema@xxxxxxxxxxx>
- To: geocentrism@xxxxxxxxxxxxx
- Date: Thu, 15 May 2008 13:50:08 +0000 (GMT)
Neville J
My -- you did read closely!
I've looked further and found another interesting document which looks at this
measurement. I have attached a text document with excerpts which might
alleviate some of your misgivings on this matter. Note that the Google
reference will lead to the document -- 434 k -- but the author's url would
appear to be broken. I did not test his email address.
I am ignorant of numbers such as '1:283' when referring to these shapes. I
infer from your response below that you understand something of geodesic
survey. Can you explain please?
Paul D
----- Original Message ----
From: Neville Jones <njones@xxxxxxxxx>
To: geocentrism@xxxxxxxxxxxxx
Sent: Wednesday, 14 May, 2008 8:17:46 PM
Subject: [geocentrism] Re: Tides
All,
"One event of unusual interest was the several very long lines across Lake
Superior they were able to observe despite the fact they were theoretically not
intervisible. While very rare, when found, these observations, known as
refracted lines because the signals are seemingly lifted by atmospheric
conditions so they can be sighted on, generally involve sights across water, as
was the case here. One such line was reported in the 1930's Hudson River arc."
The above quote is from the fourth page of the reference that Paul supplied.
Dracup (the author) skims over this, which is a pity, because this is a very
interesting area of geodesic surveying work.
As for the claimed earth 'bulge', the margin for error in these surveys seems
to me to make the definitive 'bulge' measurement questionable at the very least.
Neville.
-----Original Message-----
From: njones@xxxxxxxxx
Sent: Wed, 14 May 2008 11:01:37 -0800
Thank you, Paul. Yes, I did miss it, but will read it now.
Neville.
-----Original Message-----
From: paul_deema@xxxxxxxxxxx
Sent: Wed, 14 May 2008 07:11:22 +0000 (GMT)
Neville J
You said in -- From Neville Jones Mon May 12 23:32:18 2008 --
Has this equatorial 'bulge' been measured or observed? Or is it assumed?
Perhaps you missed this -- From Paul Deema Mon Aug 20 15:16:59 2007 --
http://www.history.noaa.gov/stories_tales/geodetic1.html
Here you will find a reference to the measurement in the middle 1730s.
The results showed conclusively that one degree of themeridian was longer in
Lapland than at Paris and proved Newton's postulate to be correct. The
expedition to Peru, the present day Ecuador departed in 1735 and returned
nineyears later with results that confirmed the Lapland finding, i.e. one
degree of the meridian is shorter at the equator than in France. [Emphasis
added]
I sought to illustrate this -- see attachment -- but it appears to my eye that
the illustration and the description differ. If anyone can alleviate my
dilemma, I'd be grateful.
Paul D
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[PDF] The Meridian Arc Measurement in Peru 1735 ? 1745File Format: PDF/Adobe
Acrobat - View as HTML
THE MERIDIAN ARC MEASUREMENT IN PERU 1735 ? 1745. Jim R SMITH, United Kingdom.
1. BACKGROUND. The story might be said to begin just after the mid 17th ...
www.fig.net/pub/fig_2002/Hs4/HS4_smith.pdf - Similar pages
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Hs4/HS4_smith.pdf, last paragraph of section seven -- Results.
The outcome of the long sojourn in S America was that the shape of the earth as
suggested by
Sir Isaac Newton was the correct one even if the actual values of the two minor
axes would be
refined over many more years and by virtue of many more arc measures. Whilst
Newton
derived a figure of 1:229 for the flattening of the ellipsoidal shape, a
combination of the
results from Lapland with those of Peru gave 1:310. Combining the Peru results
with those in
France gave 1:304; with USA arc of 39º parallel, 1:301; with Lake Erie arc of
42º parallel, 1:
289; with Lake Superior meridian arc, 1:289 and with eight other arcs, 1:278.
Thus it will be
seen that whilst there was agreement on the shape there was still a wide
variation in the form
of that shape. The results from further measures of arcs and by use of other
methods gradually
came together over the next 200 or so years to now be accepted to lie very near
to 1:298.257
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CONTACT
Jim R. Smith,
Secretary to International Institution for
History of Surveying & Measurement
24 Woodbury Ave, Petersfield
Hants GU32 2EE
UNITED KINGDOM
Tel. & fax + 44 1730 262 619
E-mail: 101765.332@xxxxxxxxxxxxxx
Website: http://www.ddl.org/figtree/hsm/index.htm
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