.
Regards,
Frans
- Original Message -
From: [EMAIL PROTECTED]
To: sundial@uni-koeln.de
Sent: Wednesday, March 15, 2006 7:20 PM
Subject: high-latitude dial
This is really a gedanken experiment as I know no one at high latitude
needing a dial, but here's what I came up with for a dial
This is really a gedanken experiment as I know no one at high latitude
needing a dial, but here's what I came up with for a dial primarily for
high latitude. The dial has a square gnomon and four sets of hour
lines, one set for each style. I'd be interested in the list's
comments on its
Tony Moss might know someone wanting a high latitude dial.
It seems to me it would work, but I can't see any advantages over a
cylindrical gnomon.
Chris Lusby Taylor
51.4N 1.3W
- Original Message -
From: [EMAIL PROTECTED]
To: sundial@uni-koeln.de
Sent: Wednesday, March 15, 2006 6:20 PM
Chris Lusby Taylor [EMAIL PROTECTED] wrote:
It seems to me it would work, but I can't see any advantages over
a cylindrical gnomon.
I was thinking an edge would give better definition of the position
of the shadow, at least for a stout gnomon. But outside of that,
I agree with you.
The idea
Except for the square gnomon, this appears to be a standard equatorial dial that could be read at any latitude as long as the dial plate is angled at the colatitude of its location with the gnomon always to celestial north. Only technical difference being reading the shadow edge rather than shadow
is a separate style and requires its own unique
sundial face.
http://www.sundialsculptures.com/pdf/polar_axis_gnomon_styles.pdf
John Carmichael
- Original Message -
From: [EMAIL PROTECTED]
To: sundial@uni-koeln.de
Sent: Wednesday, March 15, 2006 11:20 AM
Subject: high-latitude dial
Chris Lusby Taylor [EMAIL PROTECTED] wrote:
It seems to me it would work, but I can't see any
advantages over a cylindrical gnomon.
Aha! It dawns on me now what you were saying. I
thought you meant tell time by the center of the
shadow of a small-diameter gnomon, but you're
suggesting
