Let me explain how I learned the math. More than twenty years ago I started
out with Waugh's book and I could make a vertical declining dial
graphically: Draw AB, draw CD perpendicular to AB etc. but I could not
calculate one mathematically. Where's the log sin on the calculator? ;-)
Hi Dave
The gnomon for the Schmoyer dial is asymmetric East-to-West in the
same way that the analemma is. When the gnomon is inverted, East
and West are interchanged but they are on the equatorial crescent also.
Since the time scale is flipped along with the East-West flip of the
gnomon, the
Dear Roger All:
Roger wrote:
Don't forget the quote from my old trig teacher, All knowledge comes up
through a pencil. The best way to learn sundial trig is to do what you and
I have done. Work it through. Reading equations or hearing a lecture just
doesn't do it!
That is why it is important
On Wed, 13 Oct 1999, John Carmichael wrote:
I saw a lot of dialing hobbiests with paper, plastic or wooden sundials.
Maybe I'm old fashioned, but I really think that sundials should be built to
last. I think it is a pity that more of the wonderful designs that we saw
aren't being built out
As for the above hour line formula, maybe the best way to teach the
beginner its solution would be to pick an example latitude and print the
pages of Natural Logrithrimic Functions from a typical trig table that
have
the desired values. That way, the beginner could see how to use the
tables.
Hi John,
At 09:15 AM 10/13/99 -0700, John Carmichael wrote:
First, someone could write an article or series of articles on basic
beginning trigonometry as it applies to dialing.
Don't forget the quote from my old trig teacher, All knowledge comes up
through a pencil. The best way to learn
-Ursprüngliche Nachricht-
Von: John Carmichael [EMAIL PROTECTED]
An: sundial@rrz.uni-koeln.de sundial@rrz.uni-koeln.de
Datum: Mittwoch, 13. Oktober 1999 19:15
Betreff: conference Compendium topics
..
First, I noticed that several people complained that the Compendium
contained
