Pyramid dial
Date
1690
Creator
Robert White (1645 - 1703, British) , Engraver
Object type
Library reference
48603
Material
Technique
Dimensions
height (page): 290mm
width (page): 180mm
width (page): 180mm
Subject
Content object
Description
A perpendicular stile is set up on a windowsill. A young man kneels to observe where the shadow falls as the sun hits the top of the stile, allowing him to record.
Plate 23 from William Leybourn’s Dialling: plain, concave, convex, projective, reflective, refractive… (Black Swan, Pater-Noster-Row, 1690)
William Leybourn (1626-1716) British mathematician and land surveyor was not a Fellow of the Royal Society.
Plate 23 from William Leybourn’s Dialling: plain, concave, convex, projective, reflective, refractive… (Black Swan, Pater-Noster-Row, 1690)
William Leybourn (1626-1716) British mathematician and land surveyor was not a Fellow of the Royal Society.
Associated place