Solar Arc-History, Development, Variations & Practice Use - with Peter Gadek
It is clear Solar Arc Directions evolved out of Primary Directions. Both systems seem to share the same principle: 1 degree for 1 year. Still, they are very different. In this lecture, we will review predictive techniques, compare these two kinds of Directions, combine them with other techniques for prediction as well as rectification, learn their history and put them into practical applications.