Radiation of light, sound, magnetism and smell through space

Luminous rays pass only through transparent bodies

The first note states that lines, or luminous rays, do not pass except through diaphanous (transparent) bodies. The letters A m t n label the accompanying box-diagram at the top of the column.

A lit base projects an inverted pyramid; coloured glass tints it

The base x o, illuminated from point p, generates a pyramid ending at point c and re-forms another base at r S, upside down, receiving what is at x o. A further note adds that the point is the cause of the base, and that a coloured glass set before each light tints the projected base with its colour.

A blow, an echo and a smell each 'radiate' like light

The lines of a blow pass through every wall; a hole splits the ray into many weaker lines than the first, a b; and the note names 'the voice of the echo'. A later line asserts that smell does the very same as the blow.

Magnet and iron attract through a wall

The lines of the magnet and of the iron pass through the wall, but the lighter body is drawn by the heavier one. When the two are of equal weight, magnet and iron draw one another equally.

Every base fills the air with infinite pyramids

The semicircle crossed by thirteen chords is labelled to show that every base fills the air with infinite pyramids. The three semicircles below carry the complementary rule that every point causes infinite bases.

Figura colle lettere:

Figura colle lettere:

Figura colle lettere:

Figura colle lettere:

Figura colle lettere:

Figura colle lettere:

Figura senza lettere:

Figura analoga alla precedente:

Figura analoga alla precedente:

Semicerchio attraversato da tredici corde con:

Tre semicerchi con:

Figure with letters:

Figure with letters:

Figure with letters:

Figure with letters:

Figure with letters:

Figure with letters:

Figure without letters:

Figure similar to the preceding:

Figure similar to the preceding:

Semicircle crossed by thirteen chords, with:

Three semicircles, with:

Radiation of light, sound, magnetism and smell through space

On this page

Luminous rays pass only through transparent bodies

A lit base projects an inverted pyramid; coloured glass tints it

A blow, an echo and a smell each 'radiate' like light

Magnet and iron attract through a wall

Every base fills the air with infinite pyramids