Perspective, or, The art of drawing what one sees : explained and adapted to the use of those sketching from nature (1872)
Collins, W. H. (William Henry) · London : Longmans, Green · leaf 97
it travelled before reaching it. In the language of optics the angle of reflection will be equal to the angle of incidence ; also the plane in which this incident and reflected ray will lie, will be perpendicular to the surface. So that, in the case of water, the surface of which is hori¬ zontal,… … must be made to appear exactly under the real moon ; but, more than this, its distance from the plane of the water must be made equal on the drawing to the height of the moon above it. o m must equal om". If the water should be slightly ruffled with the wind, the moon, instead of being distinctly…
Perspective · Drawing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial142dodg-88-53.webp)
