Eclipse geometry
Résumé
Composite figure produced for presentations and forthcoming article. Above: the 'Yellow Path' 黃道 (ecliptic), 'White Path' 白道 (orbit of the moon), and their 'crossings' 交 (ascending and descending nodes). Middle: the 'limits' 限 before and after 'crossing' within which an eclipse is possible. Below: the effects of parallax on the apparent position of the moon.
