The general formula for destructive interference due to a path difference is given by \(\delta =(m+1/2)\lambda /n\) where \(n\) is the index of refraction of the medium in which the wave is traveling,...The general formula for destructive interference due to a path difference is given by \(\delta =(m+1/2)\lambda /n\) where \(n\) is the index of refraction of the medium in which the wave is traveling, \(\lambda\) is the wavelength, \(\delta\) is the path difference and \(m=0,1,2,3,\ldots\) What can you say about the various choices of \(m\) in this equation; what physical cases do they represent (assume \(n=1\) for now)?
