Columnar waves over obstacles in a river channel
Chapter headings on the columnar waves raised by simple, composite and lateral obstacles
Three chapter headings for the water treatise, each matched to a column-like strip diagram at the right showing waves formed around bank obstacles. Leonardo notes that where no further obstacles are interposed, waves are created over each given obstacle, small and greatest at the edges of the surface's width, so that every smallest granule raises a columnar wave. Two further headings treat composite concave-and-convex obstacles on the banks and composite lateral obstacles together with the figures of their waves.
On this page
Columnar waves rise over each obstacle in the current
Where no further obstacles of any kind are interposed, waves are created over the given obstacles; be they as many as one wishes, they are small and greatest at the edges of the width of the surface, so that every smallest granule raises a columnar wave.
Composite concave and convex obstacles on the banks
A heading on composite obstacles, both concave and convex, placed on the banks of rivers, drawn as an analogous figure among the strip diagrams.
Composite lateral obstacles and their wave-figures
A heading on composite lateral obstacles and the figures of the waves they raise, the last of the analogous figures on the page.