A text book of geometrical drawing : abridged from the octavo edition : for the use of schools in which the definitions and rules of geometry are familiarly explained, the practical problems are arranged from the most simple to the more complex, and in their description technicalities are avoided as much as possible : with an introduction to isometrical drawing : and an essay on linear perspective and shadows ... (1849)
uld alonebe seen; but for this universal law of reflection weshould be able to see nothing that is not illuminated bythe direct rays of the sun or by some artificial means. 12th, Rays of light proceeding in straight lines fromthe surfaces of objects, meet in the front of the eye ofthe spectator… … yr: Mim:n. IiiniJii.\S, PLATE XXXIV. 99 depends on the size and distance of the original; theshape of the image depends on the angle at which it isseen. Note.—^The size of objects diminishes directly as the distanceincreases, appearing at ten times the distance, only a tenth partas large; the…
![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep02muss-146-38.webp)
![An illustration from A critical examination of those two paintings on the cieling [sic] of the banqueting-house at Whitehall : in which architecture is introduced, so far as relates to the perspective : together with the discussion of a question, which has been the subject of debate among painters : written many years since, but now first published (1754)](https://img.insideoutlibrary.com/img/200/ia-criticalexaminat00high-32-2.webp)
