Aspects of the moon and reflections of the sun on water

Full moon opposite the setting sun (a...n, full moon)

When the sun stands in the west, the full moon is in the east, and the face it always turns to us is wholly illuminated. Each evening the setting sun finds the moon before it in one of these aspects.

The thirty aspects of a lunation (1-20)

These are the aspects the moon takes with the sun as the sun sets each evening. Beginning with the moon in the east and the sun in the west, Leonardo follows the daily changes over the fifteen days until both are in the west, and on until the moon again faces the setting sun, completing one lunar month.

As many images of the sun as viewing eyes

Leonardo sets out to prove that there are as many images of the sun in the water as there are positions of eyes that see it there. He imagines eyes arranged in a circle around a pool with the sun at the zenith.

The earth as a luminary seen from the moon

If the eye were as large as the world, or the world diminished by distance to the size of the eye, our earth would appear a celestial luminary to anyone on the moon or another star. This is offered as the conclusion of the water-reflection studies.

Of oblique eddies

A brief heading, 'Of oblique eddies,' introduces the study of turning water currents accompanied by a vortex figure at lower left.

Margine superiore.

Orbite del sole e della luna attorno alla terra, con:

Figura analoga, con:

Sole che illumina la superficie dell'acqua:

Sopra un'analoga figura:

Sole a perpendicolo sopra un cerchio d'acqua:

A sinistra.

Upper margin.

Orbits of the sun and moon around the earth, with:

A similar figure, with:

The sun illuminating the surface of the water:

Above a similar figure:

The sun perpendicular over a circle of water:

On the left.