This interactive simulation demonstrates the phenomenon of wave interference from two coherent sources (e.g., slits in a double-slit experiment). The left side shows two emitters sending out sinusoidal waves. These waves propagate toward the right wall, where their amplitudes are combined to produce a pattern.
The resulting graph on the right represents the interference pattern created by the superposition of the two waves at each point on the detection screen. Regions of constructive interference (bright fringes) appear where the wave crests align, while destructive interference (dark fringes) occur where a crest meets a trough.
Use the sliders above to modify the parameters and observe how the interference pattern changes in real time:
This model provides a visual understanding of how phase differences caused by different path lengths result in varying interference effects — a core concept in wave optics and quantum mechanics.