Why one light casts two shadows behind one body
Light-and-shadow study with fans of rays and tent-like umbra cones behind opaque bodies
A single sheet on light and shadow, posing two questions: why a single luminous body casts two shadows behind one opaque body, and why one body lit by one light throws two shadows. Faint pen and red-chalk diagrams show a fan of converging rays at the top and several tent-like shadow-cones rising from circular light sources behind opaque forms. Only two short questions were transcribed; the leaf plainly bears much further untranscribed writing in both columns.
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The paradox of two shadows from one light
The transcribed lines ask why a single luminous body casts two shadows behind a single opaque body, and why one body lit by a single light makes two shadows. Lettered points c a, b, e d and L K i h g f key the geometry of the light source, body and cast shadows.
Tent-like shadow cones behind opaque bodies
Several triangular 'tent' diagrams rise from small circular light sources, each throwing paired dark cones behind an opaque form. The pairing of the cast shadows visually restates the question asked in the text.
Red-chalk fan of converging rays
A large red-chalk construction of converging straight lines spreads across the upper-left corner, laying out the ray geometry behind the shadow study. Its lines are drawn freehand and unlabelled in the transcription.