 |
| Joseph Plateau |
Joseph Antoine Ferdinand Plateau was a Belgian Physicist a scientist who trained in physics. He was born in October 1801, Brussels, Belgium. Died on September 15, 1883, Ghent, Belgium.
He was the first person to demonstrate the illusion of a moving image. To do this he used counter rotating disks with repeating drawn images in small increments of motion on one and regularly spaced slits in the other. He called this device of 1832 the phenakitoscope.
The Phenakitoscope
The phenakistoscope uses the continuous of motion principle to create an illusion of motion. Although this principle had been recognised by the Greek mathematician Euclid and later in experiments by Newton, it was not until 1829 that this principle became firmly established by Joseph Plateau. The phenakistoscope consisted of two discs mounted on the same axis.
The first disc had slots around the edge, and the second contained drawings of successive action, drawn around the disc in concentric circles. Unlike Faraday's Wheel, whose pair of discs spun in opposite directions, a phenakistoscope's discs spin together in the same direction. When viewed in a mirror through the first disc's slots, the pictures on the second disc will appear to move.
The first disc had slots around the edge, and the second contained drawings of successive action, drawn around the disc in concentric circles. Unlike Faraday's Wheel, whose pair of discs spun in opposite directions, a phenakistoscope's discs spin together in the same direction. When viewed in a mirror through the first disc's slots, the pictures on the second disc will appear to move.
No comments:
Post a Comment