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The amateur's perspective : being an attempt to present the theory in the simplest form; and so to methodize and arrange the subject, as to render the practice familiarly intelligible to the uninitiated in a few hours of study (1828)

Davenport, Richard, author · London : Printed for the author · leaf 34

An illustration from The amateur's perspective : being an attempt to present the theory in the simplest form; and so to methodize and arrange the subject, as to render the practice familiarly intelligible to the uninitiated in a few hours of study, 1828, leaf 34
, measured from the zero. Suppose the vertical line v c (diag. 15), to represent a side section of the prime vertical line of the picture. o the zero, and e the eye : the horizontal line e o being- equal to the distance of the point of sight. a , a distance from c on the base line, equal to the… … s t Then, if the height of this intersection be transferred to the central vertical line of the picture, a parallel drawn through it will intersect the radii, and give the height (or latitude) of all objects equally distant from the base of the picture : and thus a practical method is given for…

Perspective

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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