Richard,
That particular dial was designed by James Hartness (URL below).
http://www.hartnesshouse.com/vermont-museum/hartness-porter-museum.shtml
Luke Coletti
On 5/20/2010 12:31 PM, kool...@dickkoolish.com wrote:
Here is one of the Porter sundials in Springfield VT.
@uni-koeln.de
Subject: Russell Porter Sundial?
Friends,
Is there a conventional name (like horizontal', equatorial', polar' and so
on) for the sundial constructed as shown below?
Am I right thinking that the name of this construction is Russell sundial?
I mean Prof. Russell Porter
The cylindrical
-- Initial Header ---
From : sundial-boun...@uni-koeln.de
To : sundial@uni-koeln.de
Cc :
Date : Thu, 20 May 2010 22:45:12 +0400
Subject : Russell Porter Sundial?
Friends,
Is there a conventional name (like horizontal', equatorial
THe drawing n° 2
(sorry but the limit of this Sundial Mailing list is only 50kb!!!)
Nicola Severino
attachment: N. 2 horolabium with vertical gnomon.jpg---
https://lists.uni-koeln.de/mailman/listinfo/sundial
Nicola,
Great explanation of terminology. I completely agree and applaud your use of
the historical literature for guidance.
All best,
Sara
Sara J. Schechner, Ph.D.
David P. Wheatland Curator of the Collection of Historical Scientific
Instruments
Department of the History of Science,
...@groknet.net]
Sent: Thursday, May 20, 2010 4:04 PM
To: Schechner, Sara
Cc: sundial@uni-koeln.de
Subject: Re: Russell Porter Sundial?
Sara,
That looks similar to a cylindrical equatorial dial done by Porter while
at CalTech. The dial incorporated EoT correction and was, apparently,
stolen (URL
Friends,
Is there a conventional name (like horizontal', equatorial', polar' and so
on) for the sundial constructed as shown below?
Am I right thinking that the name of this construction is Russell sundial?
I mean Prof. Russell Porter, the Palomar Mountain Observatory.
Any help, please.
Here is one of the Porter sundials in Springfield VT.
http://www.dickkoolish.com/rmk_page/RMK_Pictures/S60-07-31-06/IMGP0754.JPG
Friends,
Is there a conventional name (like horizontal', equatorial', polar' and
so on) for the sundial constructed as shown below?
Am I right thinking that
: Russell Porter Sundial?
Friends,
Is there a conventional name (like horizontal', equatorial', polar' and so
on) for the sundial constructed as shown below?
Am I right thinking that the name of this construction is Russell sundial?
I mean Prof. Russell Porter, the Palomar Mountain Observatory
Richard,
That particular dial was designed by James Hartness (URL below).
http://www.hartnesshouse.com/vermont-museum/hartness-porter-museum.shtml
Luke Coletti
On 5/20/2010 12:31 PM, kool...@dickkoolish.com wrote:
Here is one of the Porter sundials in Springfield VT.
To: sundial@uni-koeln.de
Subject: Russell Porter Sundial?
Friends,
Is there a conventional name (like horizontal', equatorial', polar' and so
on) for the sundial constructed as shown below?
Am I right thinking that the name of this construction is Russell sundial?
I mean Prof. Russell
]
Sent: Thursday, May 20, 2010 4:04 PM
To: Schechner, Sara
Cc: sundial@uni-koeln.de
Subject: Re: Russell Porter Sundial?
Sara,
That looks similar to a cylindrical equatorial dial done by Porter while
at CalTech. The dial incorporated EoT correction and was, apparently,
stolen (URL below).
http
...@groknet.net]
Sent: Thursday, May 20, 2010 4:04 PM
To: Schechner, Sara
Cc: sundial@uni-koeln.de
Subject: Re: Russell Porter Sundial?
Sara,
That looks similar to a cylindrical equatorial dial done by Porter while
at CalTech. The dial incorporated EoT correction and was, apparently
I think the dial could be called a Polar dial, but I favor Equatorial,
because the hour marks will be evenly spaced along a cylindrical
surface, typical of many equatorial dials. How about shaking things up
a bit, and calling it a Polar Equatorial? Definitely not horizontal.
-Bill Gottesman
Dear Sara, Bill and others,
As it frequently happens, a very simple question causes an entire scientific
and historic problem.
I make a set of six public brass sundials for children. At the stage of making
the informational brass plaques, which are to be installed near sundials, we
realized
Dear Sundialers,
Thanks to a number of you good folks inputs on methods of retreiving patents,
here is a
tinyurl address for the first page of Russell Porter's patent on the Reflecting
Telescope.
http://tinyurl.com/23w6gy
If you do not see the first page of the patent with it's drawing you
Wall.
- Original Message -
From: Edley McKnight
To: Mac Oglesby ; Sundial List
Sent: Wednesday, May 16, 2007 4:13 AM
Subject: Re: Russell Porter sundial
Hello Mac,
The Patent for Porter's reflecting telescope is available directly from the
patent office's online site
An original Porter Garden Telescope recently sold at the
Skinner auction in Boston.
http://www.dickkoolish.com/rmk_page/pictures_032207.html
There a couple of Porter sundials in the telescope making museum
at the Hartness House in Springfield VT.
Richard M Koolish wrote:
And there is the dial on the clubhouse at Stellafane.
http://www.dickkoolish.com/rmk_page/pictures_080905.html
There is an excellent picture of the Russell Porter Stellafane vertical
sundial also on the NASS Sundial Registry. Visit the NASS website at:
Hello Mac,
The Patent for Porter's reflecting telescope is available directly from the
patent office's online
site at a huge long url, which is too long to type in or put on a single line.
You can just go to:
http://patft.uspto.gov/netahtml/PTO/search-bool.html
and search for telescope in
The Patent for Porter's reflecting telescope is available directly from
the patent office's online
site at a huge long url, which is too long to type in or put on a single
line.
For future reference, there's an easy fix for that problem:
Once you have navigated to the site with the long URL,
Hello Friends,
The Summer 2007 issue of Vermont Life magazine contains a nice
article on Stellafane, a convention of amateur telescope makers which
convenes each summer in Vermont, USA.
Prominent among its founders was Russell W. Porter, architect,
artist, mechanical genius, Arctic explorer,
Hi Mac,
I have only hearsay evidence, but I'm told, since it has a latitude setting
ring, a declination
setting ring and an hour angle ring, when the eyepiece and prism are removed
and the main
mirror focused on the sun, as observed on a surface placed at it's focal point
the declination
and the internet rules as the ultimate library resource. I may yet take that
walk.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Mac Oglesby
Sent: May 14, 2007 4:46 PM
To: Sundial List
Subject: Russell Porter sundial
Hello Friends,
The Summer 2007 issue
Mac,
I suspect that if you aim the telescope at the sun then the hour circle
will show the local time.
In Porter's (Scientific American) Amateur Telescope Making, probably
Volume I, there is a sketch of a sundial based on a spherical chemist's
flask. As I recall, a lens in the neck was aimed
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