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 ou
> 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
tabl
-Ursprüngliche Nachricht-
Von: John Carmichael <[EMAIL PROTECTED]>
An: 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 too much higher mathe
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 impor
Hi Roger,
A very nice derivation can be found in "A Choice of Sundials", by
Winthrop W. Dolan, pg. 20-21. For those seeking a more intuitive
approach, the graphic, inside the book's dust jacket, of a horizontal
plane "embedded" within the celestial sphere gives a marvelous
description of
Hi All,
To me the question is not more or less math, but how can certain concepts best
be
shown or learned. Fer de Vries had a set of steps to construct that helped me
understand the eot. His hemispherium is also a construction that everyone
should
do. The math, like C=2(pi)r, has reasons b
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
Dear John and the List,
I can only second the sentiments in your posting: the NASS
Conference was a true delight. It was a joy to attend, to meet you and all
the old and new friends, and to learn so much!!
As a one-time mathematician, I revel in the mathematical
articles, but
Hello Bill:
Yes exactly. I had forgotten about your excellent Compendium article, "Doing
it with Style". I remember it very well now. It is exactly the type of
article that beginners need. Your Trig Review In a Capsule is particularly
well done and easy to understand. I think that with all ar
At 09:15 AM 10/13/99 -0700, John Carmichael wrote:
Snip
>First, someone could write an article or series of articles on basic
>beginning trigonometry as it applies to dialing.
Snip..
>I see a definite need for more articles, written by
>craftsmen and artists, on the practical aspects of sun
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