How Do You Perform Youngs Double Slit Experiment?
Before 1801, the theory was that light was made of tiny bullet-like particles because it seemed to travel in a straight beam. Young’s double slit experiment proves that light travels in waves, and that these waves are transverse rather than longitudinal. You can perform his experiment by following these steps. Set up your light source. A desk lamp will do for an informal experiment. For a more rigorous experiment, use a light source that has a constant knowable output. Where you set it up is only important in relation to the other pieces, so you may need to adjust the position as you go. Position the slitted plate so that the slits are vertical and parallel to each other and far enough away from the light source that both slits receive the same amount of light. Place the photographic plate at a distance so that it receives light through both slits equally when neither one is obstructed. If you have any doubt, placing it the distance from the plate that the light source is should work.
