mirc:

lamblamblamb:

eyeballmansion:

adsertoris:

Ars Magna Lucis et Umbrae

[‘the great art of light and darkness’]

Athanasius Kircher, 1646.

‘The Selenic Shadowdial or the Process of the Lunation’

“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, Pierre Miotte, has reversed the appearance of the waxing and waning moons for the northern hemisphere.” (via BibliOdyssey: Ars Magna Lucis et Umbrae)

(via perfectdefect-input)