Niel <kepler...@gmail.com>
Cc: Sundial sundiallist <sundial@uni-koeln.de>
Betreff: Re: New indoor sundial with lens/mirror
Hello Kurt,
Fun video. I'm sure the construction was harder than it looks.
Why are the indoor hour lines curved? How is this different from a gnomonic
Hello Kurt,
Fun video. I'm sure the construction was harder than it looks.
Why are the indoor hour lines curved? How is this different from a
gnomonic projection, which has straight hour lines?
-Bill
On Sat, Apr 21, 2018 at 8:33 AM, Kurt Niel wrote:
> Hi All,
>
> just
Hi All,
just added two videos about final works:
1) about the indoor sundial:
https://m.youtube.com/watch?v=WzyvEpsEL8A
2) about the outdoor sundial:
https://m.youtube.com/watch?v=mdw9mLih6gE
Kurt
Am 20.04.2018 3:32 Nachm. schrieb "Kurt Niel" :
Hi all,
proudly presenting
Dear Bill,
thank you for your ideas! This is not the final destination of my approach
- there are several more or less intuitive design elements which I had to
finaly put together. It took me many opponent ideas to fit into a single
small bottleneck of realization.
1) Glas lens: I had to order a
Hello Kurt, Congratulations on completing a challenging project.
I would like to ask a few optical questions.
Why did you use a lens at all? In my experience, a lens differs from an
open aperture in that it distorts the path of the sun. For example,
straight lines, if they are off-axis, are
Spectacular! Techno-Modern-Gnomonics.
Almost a reverse display, instead of shadow, the point of light is the
display. Sort of a reflecting gnomon -rather than a shadow. In my
translated page it is called a shadow - but should there be a different
term for a concentrated spot of light?
Hi all,
proudly presenting my latest sundial within a primary school here in Upper
Austria:
https://kepleruhr.at/su-vs-wallern and
https://flic.kr/s/aHsm9EgPtL
Bending mirror because of the narrow lightwell.
Cheers
Kurt
https://kepleruhr.at
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