irection ofa line, its distance from the eye contributes towarddetermining the size of the visual angle, and con-sequently modifies tfie apparent length of the line-The line being held upright, and at a certain dis-tance from the supposed eye, forms a visual angleof a certain size; if the line is… … That this is exactly the effect produced by distance, is made manifest when we look at a row oftrees or columns, or a long line of street, road orrailway, of which every part throughout the en-tire length is equally broad; the breadth, never-theless, appears to diminish as the distance is…
Design · Decoration and ornament · Art
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-169-414.webp)
