Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates (1887)
McGuirl, Thomas H. [from old catalog] · Toronto, W. Briggs; · leaf 15
orizon always hounds our vision. If we look out upon a large lake we find that the sky andwater appear to meet; this line of apparent union is called 10 DRAWING. the horizon. No matter how large an object is, if it recedesfar enough from us on a lake, it would at length appearon the horizon as a… … Now, if we take this point as a centre, and join it with theeye of the observer, and draw lines at an angle of 30° with itfrom the observers eye, we shall form a hollow cone, whichrepresents his range of vision : thus, if the observers eye beat the point X, and AB represent the horizon, and 0…
Geometrical drawing · Perspective
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
