*Dear All,*
**
* I am back again, regarding my proposal for installing a vertical style
at the school yards, wherever possible, to demonstrate the meridian line /
real-noon time, and also practicing the Indian circle method in determining
the true geographical directions. Even the school children could learn later
on the magnetic deviations, which it is quite high in certain
places.Ithought if the vertical style could be pivoted at its foot, to
be inclined
forward easily, equal to the place's latitude, it could be also used as a
simple horizontal dial in later stages.*
**
* I think with the existing think tank in the group, a genius
simply-understood program could be devised. But there is one draw back,
since there would be so many dialist in the generations to come and many
astronomers, which will cut down the price of sundials, except the artistic
ones! Since there is a well-known Arabic adage which states:"Whatever learnt
in childhood is like engraving in the stone." In this regard, if we teach
our children to respect other's faiths, we will have a much more peaceful
planet in the coming decades.*
**
*Best regards,*
**
*Mashallah Ali-Ahyaie
*
On 7/12/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]>
wrote:
Send sundial mailing list submissions to
[email protected]
To subscribe or unsubscribe via the World Wide Web, visit
https://lists.uni-koeln.de/mailman/listinfo/sundial
or, via email, send a message with subject or body 'help' to
[EMAIL PROTECTED]
You can reach the person managing the list at
[EMAIL PROTECTED]
When replying, please edit your Subject line so it is more specific
than "Re: Contents of sundial digest..."
Today's Topics:
1. Re: Help Oscar! (Edley McKnight)
2. Re: Frying Pan Sundial (Roger Bailey)
3. RE: Frying Pan Sundial (Carl & Barbara Sabanski)
----------------------------------------------------------------------
Message: 1
Date: Wed, 11 Jul 2007 16:35:29 -0700
From: "Edley McKnight" <[EMAIL PROTECTED]>
Subject: Re: Help Oscar!
To: Sundial Mailing List <[email protected]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
Dear Frank and All,
Your observations are very good,? the number of adults and children that
can
properly use even a ruler seems small.? Your using a vertical pole as a
gnomon is worthwhile.? A knowledgeable and able person? could establish a
dial center offset toward the equator in such a way that the node or top
of the
pole subtended an angle equal to the latitude along the north/south line,
thus
turning the pole into a virtual gnomon and painting out lines from the
dial
center through the spots marked with the simple method which would prove
to give better results at a later time in the year. Classes in years
following
could possibly look into the adjustments needed to attempt to determine
political time from the sun's shadow.?? Perhaps this is too complicated,
but
would provide a constant reminder on the playground.
Best Wishes!
Edley.
> Dear All,
>
> I have read the correspondence about Oscar with
> much interest.? "How," it is almost asked, "can
> we used sundials as a means of interesting
> children in science?"
>
> Like Tony Moss, and no doubt several others on
> this list, I have given many talks on Sundials
> in schools and to brownies and cubs and so on.
>
> I have minimal knowledge of child psychology
> or educational theory (topics which have a
> tendency to raise my blood pressure) but I
> have made a number of observations...
>
> Clearly the age of the group will dictate what
> you can hope to get across.? You won't get very
> far unless:
>
>? 1. The children can tell the time from an
>???? ordinary 12-hour two-hand clock or watch.
>
>? 2. The children have some understanding of
>???? North, South, East and West.
>
> In my experience, many children can tell the time
> before they go to school (by which I mean age 5).
> Moreover, they have little difficulty adjusting
> to the idea of a clock with one hand or to the
> idea of a 24-hour clock.? If you want to talk about
> sundials, this is good news!
>
> The bad news is that understanding North, South,
> East and West seems MUCH harder.?
>
> In my experience, most adults are fairly hopeless
> at directions.? I have, many times, said I will
> meet someone at the WEST door of a particular
> Church and I found that the failure rate was high.
> I gave up this approach when I found that even the
> Vicar didn't get it right!
>
> For young children (6 to 10) the niceties of a
> polar-orientated gnomon can be left on one side.
> What they want is something real.? Here are a
> couple of ideas for teachers...
>
> Idea one: find some convenient vertical pole
> which has a hard surface round it.? This might
> be a netball post on the playground.
>
> If the sun is cooperative, you ask the children
> outside when they first arrive in the morning.
> You note the direction of the shadow and get one
> of the children to draw a short length of time
> line and mark the time in some way.? If there is
> a school clock in sight that would be ideal.
>
> You don't make a great fuss of this but you take
> them out again at break time and at lunch time and
> at going home time.
>
> This will get across several things.? Notably that
> the shadow goes round and that in the course of a
> school day it goes round less than half a circle.
>
> You can ask several questions.? Will it keep going
> round during the night?? Will it still work tomorrow?
> Will it still work at Christmas?? Will it work when
> the clocks go back?
>
> Idea two: once idea one has sunk in, you can set up
> an experiment in the class room.? All you need is a
> large sheet of paper, a vertical spike and a bright
> light.
>
> You can then simulate the pole and the playground
> and explain what is going on.? If you lay all this
> out on a circular table you can simulate sunrise
> and sunset and so on by diving under the table
> at night!
>
> Of course you must let the children have a go
> themselves.? They must play at being the sun!
> You can even write E and S and W on the paper
> as well as times.
>
> I frequently do this in lectures when I use a
> 300W lamp and I can wander around simulating a
> winter day or a summer day and so on.
>
> A 300W lamp is a bit dangerous for children but,
> on a small scale, a suitable torch would do.
>
> Enough!
>
> Frank King
> Cambridge, U.K.
>
> ---------------------------------------------------
> https://lists.uni-koeln.de/mailman/listinfo/sundial
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
https://lists.uni-koeln.de/mailman/private/sundial/attachments/20070711/e1948ceb/attachment-0001.htm
------------------------------
Message: 2
Date: Wed, 11 Jul 2007 18:06:09 -0700
From: "Roger Bailey" <[EMAIL PROTECTED]>
Subject: Re: Frying Pan Sundial
To: "Carl & Barbara Sabanski" <[EMAIL PROTECTED]>, "Sundial Mailing
List (E-mail)" <[EMAIL PROTECTED]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Carl,
One might think if you are going to do all that work to make an attractive
sundial, you would get the numbers in the right place. The gnomon should
start where the east west line from 6 to 6 (5 to 7 DT) intersects the
north
south line. The angles are not evenly spaced 15? apart but vary with
latitude. This is Build a Simple Sundial lesson 101.
Regards, Roger Bailey
----- Original Message -----
From: "Carl & Barbara Sabanski" <[EMAIL PROTECTED]>
To: "Sundial Mailing List (E-mail)" <[EMAIL PROTECTED]>
Sent: Wednesday, July 11, 2007 3:08 PM
Subject: Frying Pan Sundial
> Sunny Day!
>
> A new Canadian magazine called Metalcraft came out about a couple of
years
> ago. It is intended for individuals (artists and craftspeople) who
> already
> enjoy working with metal or would like to learn. Their web site is:
>
> www.metalcraftmag.com
>
> In their 2006 spring issue there was an article about constructing a
> working
> sundial using a frying pan. I recently discovered this article on the
> internet. Check it out at:
>
> http://www.metalcraftmag.com/PDFz/003a1.pdf
>
> Happy Dialling!
>
> Carl Sabanski
> www.mysundial.ca
> "Get Hooked on Gnomonics!"
> ---------------------------------------------------
> https://lists.uni-koeln.de/mailman/listinfo/sundial
>
>
------------------------------
Message: 3
Date: Wed, 11 Jul 2007 20:52:45 -0500
From: "Carl & Barbara Sabanski" <[EMAIL PROTECTED]>
Subject: RE: Frying Pan Sundial
To: "'Roger Bailey'" <[EMAIL PROTECTED]>, "'Sundial Mailing List
\(E-mail\)'" <[EMAIL PROTECTED]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
Sunny Day Roger!
I believe that the frying pan sundial hour lines are laid out
correctly. In
the text is described the graphical method for laying out hour lines. The
centre of the sundial is on the east west line but they have chosen not to
number this line. There is also the following statement:
"It is important to note that the hour lines are not all equidistant from
each other. This is intentional, but ..."
This "Sundial Fryer" is really hot!
Regards,
Carl
-----Original Message-----
From: Roger Bailey [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 11, 2007 7:06 PM
To: Carl & Barbara Sabanski; Sundial Mailing List (E-mail)
Subject: Re: Frying Pan Sundial
Hi Carl,
One might think if you are going to do all that work to make an attractive
sundial, you would get the numbers in the right place. The gnomon should
start where the east west line from 6 to 6 (5 to 7 DT) intersects the
north
south line. The angles are not evenly spaced 15? apart but vary with
latitude. This is Build a Simple Sundial lesson 101.
Regards, Roger Bailey
----- Original Message -----
From: "Carl & Barbara Sabanski" <[EMAIL PROTECTED]>
To: "Sundial Mailing List (E-mail)" <[EMAIL PROTECTED]>
Sent: Wednesday, July 11, 2007 3:08 PM
Subject: Frying Pan Sundial
> Sunny Day!
>
> A new Canadian magazine called Metalcraft came out about a couple of
years
> ago. It is intended for individuals (artists and craftspeople) who
> already
> enjoy working with metal or would like to learn. Their web site is:
>
> www.metalcraftmag.com
>
> In their 2006 spring issue there was an article about constructing a
> working
> sundial using a frying pan. I recently discovered this article on the
> internet. Check it out at:
>
> http://www.metalcraftmag.com/PDFz/003a1.pdf
>
> Happy Dialling!
>
> Carl Sabanski
> www.mysundial.ca
> "Get Hooked on Gnomonics!"
> ---------------------------------------------------
> https://lists.uni-koeln.de/mailman/listinfo/sundial
>
>
------------------------------
_______________________________________________
sundial mailing list
[email protected]
https://lists.uni-koeln.de/mailman/listinfo/sundial
End of sundial Digest, Vol 19, Issue 6
**************************************
--
Mashallah Ali-Ahyaie
---------------------------------------------------
https://lists.uni-koeln.de/mailman/listinfo/sundial
