To do this, he used an inclined plane. Next he made the logical assumption that a ball rolling down a plane accelerates at the same rate as one in free fall.

On flat planes the center of pressure moves steadily forward from the center of the plane to a point near the front edge as the plane is inclined from the normal or 90-degree position to 0 degree.

The changing boundaries of a stream flowing at a constant rate are explained. A jet of fluid flowing down a partially wetting, inclined plane usually meanders but — by maintaining a constant ...

Count de Lambert uses five planes 10 feet long and about 4 feet broad. They are placed a foot apart, and are slightly inclined and turned upward from back to front.

This article was originally published with the title “Safety Car for Inclined Planes” in Scientific American Magazine Vol. 8 No. 23 (February 1853), p. 180 doi:10.1038 ...