Pete
To some extent you are right. If we limited ourselves to one kind of dials
we would avoid few problems but the world of dialing would not be so
fascinating. This is incredible how many ideas were introduced into
sundials and every new design is a challenge for its creator how to solve
Mike Shaw wrote:
(snip)
I have always had concerns with the EofT when it does not take into account
the distance from the standard meridian - to the uninitiated, the dial STILL
doesn't give clock time, reinforcing their (incorrect) opinion that
sundials
don't work properly.
If I include an
Mike Shaw asked:
Snip
For latitude +32 (isn't that your approximate latitude, John?), a
horizontal dial's mean absolute error would be 6.8 minutes.
Snip
But don't you also have to adjust that figure for the longitude correction ?
The 6.8-minute figure assumes a perfectly constructed,
Hi Guys:
Just another quick question on EOT as long as we're on the subject again:
Is the average EOT correction over the course of the entire year equal to
about seven or eight minutes? from (16+15)/2/2=7.75 min.. As 16 minutes is
about the extreme correction on Nov. 1st. and 15 minutes
Message text written by John Carmichael
then, on the average, if you read the time
directly from a longitudinally corrected dial, your non-EOT corrected
reading would be off by about seven minutes on any day of the year.
That may be the average but the average doesn't have any meaning to the
