Dictionarium polygraphicum, or, The whole body of arts regularly digested ..: illustrated with fifty-six copper plates . P(,^//j^^t/^i//jt(Z/ice, Pcunt^^St^Z/t. Pei/it^ i//jtnni:e^ H ..??- I 2. N f7 .z^. 2%^ BaJe HtT/t-x: jcn. PER rj7 Perspective, is a point in tiie axis of the eye, or in the cen-tral ray, where the fame is interfefled by the horizon. Thus the point E in the firfl: figure, plate X, is the point offight in the horizon C D, wherein all the vifual rays meet. It is called the point of the eye, or ocular point, bccaufe tli-red^ly oppofed to the eye of the perfon who is to view the
Dictionarium polygraphicum, or, The whole body of arts regularly digested ..: illustrated with fifty-six copper plates . P(,^//j^^t/^i//jt(Z/ice, Pcunt^^St^Z/t. Pei/it^ i//jtnni:e^ H ..??- I 2. N f7 .z^. 2%^ BaJe HtT/t-x: jcn. PER rj7 Perspective, is a point in tiie axis of the eye, or in the cen-tral ray, where the fame is interfefled by the horizon. Thus the point E in the firfl: figure, plate X, is the point offight in the horizon C D, wherein all the vifual rays meet. It is called the point of the eye, or ocular point, bccaufe tli-red^ly oppofed to the eye of the perfon who is to view the piece. Of the point or points of cUfiance.— Thefe are a point or points,for there are fometimes two of them, placed at equal diftancefrom the point of fight. They are thus denominated, by reafon the fpedator ou^-ht tobe fofar removed from the figure or painting, and the terrcflrialline, as thefe points are from the point of the eye, and are al-ways to be in the horizontal line. Thus, HI, fee plate X. fig, 2, being the horizon, and Kthe point of frght, L and l\\ are points of diflance, ferving togive all the fhortenings. Thus, ex. gr. if from the extremes of the line F G you drawtwo lines to the point K, and from the
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Keywords: ., book, bookcentury1700, booksubjectarts, booksubjectindustrialarts
