Horizon science of graphical perspective. Assuming the picture plane stands vertical to ground, and "P" is the perpendicular projection of the eye point "O" on the picture plane, the horizon is defined as the horizontal line through "P". The point "P" is the vanishing point of lines perpendicular to the picture. If "S" is another point on the horizon, then it is the vanishing point for all lines parallel to "OS". But Brook Taylor (1719) indicated that the horizon plane determined by "O" and the horizon was like any other plane: The peculiar geometry of perspective where parallel lines converge in
The Devil's Point easiest route is to follow the path leading up the Coire Odhar from Corrour Bothy, on the eastern side of the mountain. To reach the bothy requires a long walk in; the most usual route is to follow the Lairig Ghru from Linn of Dee, a distance of some . The Devil's Point is often climbed along with Cairn Toul. Sgòr an Lochain Uaine, which lies to the north of Cairn Toul is sometimes called "The Angel's Peak", in contrast to The Devil's Point. The Devil's Point The Devil's Point (Scottish Gaelic: Bod an Deamhain) is a mountain in the