With the use of two robots we recreated Young's experiment, also known as the Double-slit experiment. The first robot holds a structure that projects the light of a laser through two small fissures, that are placed in front of it. The light is then projected onto a screen attached to the second robot, at a certain distance; also going through a fixed lens, placed on the table.
The job of the first robot is to simply move closer to the lens or further away from it, to handle the focus of the images on the screen. The second robot, in the same way, can reduce or increase the distance between the screen and the double-slit, and, based on this, the distance between two fringes of light, projected on the screen, will vary.