Dear sundial friends!
Joan Olivares Alfonso
has recently created two beautiful sundials.
I invite you to have a closer look at them
in the end of the following link:
http://www.ta-dip.de/sonnenuhren/sonnenuhren-von-freunden/s-p-a-n-i-e-n/joan-olivares-alfonso.html
is one of them...
OK, I would also like to take a turn and ask a question to the mathematically
inclined:
I have been trying to figure out how to plot the duration of daylight over the
course of the year as a function of latitude. (I would generate a curve for
each latitude I am interested in.)
I believe
Hi Jack,
Let me offer the solution to a related question that came up while hiking
with friends around the time of the solstice. One friend asked
about the changes he had noticed in the times of sunrise and sunset near
the solstice. Sunrise kept getting later after the solstice but sunset
I find this website very helpful for visualizing the changes in daylight over
time and latitude.
Daylight Hours Explorer
http://astro.unl.edu/classaction/animations/coordsmotion/daylighthoursexplorer.html
On Feb 3, 2015, at 3:36 PM, sundial-requ...@uni-koeln.de wrote:
OK, I would also like
