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This page contains a facsimile of Leonardo da Vinci's Manuscript C (Paris), verso of the cover. The text is written in Leonardo's characteristic mirror script (right-to-left). Leonardo often used these front pages to list the broad themes of his research.
| (of circular motion) | (of circular motion) |
| (of rectilinear motion) | (of rectilinear motion) |
| (of mixed motion) | (of mixed motion) |
| of the fall of weights | of the fall of weights |
| and of the impetus impetus: a medieval and Renaissance precursor to the concept of momentum of darts | and of the impetus of darts |
| and of force and its cause | and of force and its cause |
| of the centers of gravity | of the centers of gravity |
| and of the equilibrium of balances | and of the equilibrium of balances |
| of the gait of cats and other animals | of the gait of cats and other animals |
| and of the strength of man | and of the strength of man |
In this book, we will treat shadows original: "verna"; likely a transcription error for "ombra" (shadow), which is the central theme of Manuscript C. and the sphere of the sun, the air, and the water; and how light passes through these aforementioned media; and the causes of winds, rains, thunder, and lightning; and how vapors move through these media; and the colors that these media possess, and how the color of objects is varied by them. Leonardo is describing "atmospheric perspective"—how the air itself changes the appearance and color of distant objects, a technique he famously applied in the Mona Lisa.