This CalcTown calculator finds the position of bright fringes on the screen for a Young's Double Slit Experiment.

*Please note that these values are calculated under the assumption that y=0 for central maxima. Also, n can take values like ....-3,-2,-1,0,1,2,3...

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where

λ = Wavelength of light

L= Distance between the slits and the screen

d=Distance between the two slits

y=Location of the n-th bright fringe on the screen considering the central maxima to be y=0