Plincton de Ptolomeo - Parque de las Ciencias, Granada, Spain
N 37° 09.694 W 003° 36.263
30S E 446338 N 4112966
Ptolemy's Plinth is one of many sundials at the Science Park in Granada.
Waymark Code: WM4H1Y
Location: Spain
Date Posted: 08/24/2008
Views: 54
Observing the shadow of the gnomon at mid-day will tell you today's date, the solar declination and the maximum height that the sun will reach.
One of the earliest examples of a quadrant is the large 'plinth' described in Ptolemy's Almagest and used for measuring the meridian altitude of the Sun.
Sundial Type: Analemmatic - Vertical gnomon with elliptical dial
Related Web Site: [Web Link]
|
Visit Instructions:
Only one log per location per person. You should log your own waymarked sundials as well.
GPS in photo optional.
Recent Visits/Logs:
| There are no logs for this waymark yet. |
|
|
|