oPhysics: Interactive Physics Simulations


Double Slit Diffraction and Interference

Description
This is a simulation of light being diffracted by a double slit, intended for anyone looking to learn about diffraction and interference. Use the sliders to change the wavelength of the light, the distance between the slits, the distance to the screen, and the height of the point where the waves come together on the screen. You can use the checkboxes to choose between dots representing crests or troughs on the red wave, in order to look for constructive or destructive interference.