You likely have a sheet of glass already clamped in place nearby -- the
window. Couldn't you calculate a vertical dial for the right orientation,
print it on a transparency, tape the transparancy to the window glass, and
mark out the lines with a laser pointer or perhaps with a projector that
cas
All of these ideas using lasers, auxiliary sundials and transparencies all
sound like they would help in drawing the sundial face, but I don't think
they will precisely place the dial drawing on the ceiling or help to
correctly align a declining or inclining mirror.
I think you all are minimizing
Hello everybody, I must say, I like to read your mails, all who gave there
opinion show they want to contribute, & in fact that is what a forum is for.
So here is mine: why not start by obtaining the local meridian IN the house
first, that is what the people
in the past did first.
Walter
On Thu, 3 Jan 2002, John Carmichael wrote:
> All of these ideas using lasers, auxiliary sundials and transparencies all
> sound like they would help in drawing the sundial face, but I don't think
> they will precisely place the dial drawing on the ceiling or help to
> correctly align a declining
Dear Membership,
I've been listening to all the great ideas about Ceiling dials and
they all sound like they would work well under some circumstances.
In earthquake country or where the soil shifts from moisture/freezing
the mirror is going to have to be adjustable. If the dial is laid
out
In response to both Dave Bell and John Carmichael, I took the
small mirror as fixed, and required it only to be flat and, of course,
stable. These are necessary conditions for any ceiling
sundial.
My proposal does not require any knowledge of the actual
alignment of the mirror. John Carm
