The larger pupil sees luminous bodies larger
A passage on the eye emerging from darkness, above a red-chalk cylinder on a carriage
An optics note holds that a larger pupil sees things of larger figure, shown especially in viewing luminous and celestial bodies. When the eye comes out of darkness and looks at once, such bodies appear larger and then shrink; and seen through a small hole they look smaller, because a smaller part of the pupil is employed. A separate red-chalk sketch of a cylinder on a carriage is drawn at the top of the page.
On this page
Pupil size, dark adaptation, and viewing through a small hole
The larger pupil sees things of larger figure, as with luminous and celestial bodies: when the eye emerges from darkness they first appear larger and then diminish. Viewed through a small hole they appear smaller, because a smaller part of the pupil does the work.
Red-chalk sketch of a cylinder on a carriage
At the head of the page is a light red-chalk drawing of a cylinder mounted on a small carriage or support, unrelated in subject to the optics text below it.