263132r
[Commentary:
Uses the sine law of refraction to calculate the axis-intercepts of rays incident at
1â², 1°, and 1° 35â² 29â³ (the very edge of the glass).
Convex surface of lens is directed towards the ]
Bulkely. De refractionibus per
segmentum sphæræ
[Translation: On refractions through a segment of a glass ]
segmentum sphæræ
[Translation: On refractions through a segment of a glass ]
Pro concursu radiorum
[Translation: To find the meeting point of the central ]
[Translation: To find the meeting point of the central ]