ACCIDENTAL a.
ctually colored bodies. -- Accidental point (Persp.), the point in which a right line, drawn from the eye, parallel to a given right line, cuts the perspective plane; so called to distinguish it from the principal point, or point of view, where a line drawn from the eye perpendicular to the perspective plane meets thi…
ANCHOR n.
ularly from the cathead, ready to be let go. -- The anchor is apeak, when the cable is drawn in do tight as to bring to ship directly over it. -- The anchor is atrip, or aweigh, when it is lifted out of the ground. -- The anchor is awash, when it is hove up to the surface of the water. -- At anchor, anchored. -- T…
ANGLE n.
sphere. -- Visual angle, the angle formed by two rays of light, or two straight lines drawn from the extreme points of an object to the center of the eye. -- For Angles of commutation, draught, incidence, reflection, refraction, position, repose, fraction, see Commutation, Draught, Incidence, Reflection, Refraction,…