🌊 Double-Slit Interference (2D)
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Slits: Double
λ
540
nm
Slit width
6
Separation
30
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λ =
540
nm
slit separation d =
30
fringe spacing ≈
0.00
Two coherent slits emit circular wavefronts; where crests meet crests the field brightens, where crests meet troughs it cancels. The bar on the right is the time-averaged fringe intensity that would build up on a detector screen.