There are more interesting apps for android/iphone like Sunsurveyor.
That one can come in very handy for sundial placement and design.
There is a light ((free) version and a paid version with a lot more features.
Thibaud
At 22:49 9-10-2012, [email protected] wrote:
If you own an Android device (smartphone or tablet) you may want to take
advantage of the new app "Sol Et Umbra" that means "Sun and Shadow".
It is available for free from the usual Google app market.
Sol Et Umbra is basically an app that shows sun ephemeris for the actual (or
whichever desired) time and date:
- latitude and longitude
- right ascension and declination
- local azimuth and height
- equation of time
- local or time zone sun time
- local or time zone mean time
- time of rise, set and transit (local noon)
- total number of hours of light
Moreover Sol Et Umbra shows the time using italic, babilonic and
temporal time
systems.
It also shows the time of Muslims prayers (that are strictly related to the
position of the sun): Fajr, Zuhr, Asr1, Asr2, Maghrib and Isha.
Sol Et Umbra can use the orientation sensors available in the device in order
to compute and show the time lines of a sundial designed on the plane of the
display.
The graph is updated after any movement of the device.
Finally the app can show the lighting conditions of a dial that is drawn on
the device plane by means of an azimut / height graph that shows for
any day in
the year and for any hour in the day when the dial is lighted.
More information on the program are available from my site: http://digilander.
libero.it/orologi.solari/download/SolEtUmbraENU.html
Ciao.
Gian
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