Sunlight, Celestial and Magnetic North on the Meridian Line
Hartmann in 1510-Rome and Columbus in 1492 measured the difference between Celestial and Magnetic North: with the alignment of a meridian line are based upon the light of the Sun and of the Stars. At the Basilica of Santa Maria degli Angeli.
- Costantino Sigismondi, email@example.com
- June 21, 20152015-06-21T10:30:00
- Rome, Italy