chaosophia218:

Athanasius Kircher – Sciathericum Seleniacum Siue Lunare Expansium (The Selenic Shadowdial or the Process of the Lunation), “Ars Magna Lucis Et Umbrae” (The Great Art of Light and Darkness), 1646.

The spirals show the length of the Moon’s appearance in the Sky, with its Rising and Setting. The scheme gives the Moon twenty-eight Phases and the engraver has reversed the appearance of the Waxing and Waning Moons for the Northern Hemisphere.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.