# Tag Info

The angle between maxima in the double-slit pattern is $$\theta \approx \frac\lambda d$$ for wavelength $\lambda$ and slit separation $d$. I wild-guess that the slits in your photograph are about 5 cm apart, so your diffraction peaks should be separated by $$\frac\lambda d = \frac{\rm 500\,nm}{\rm50\,mm} = 10^{-5}\rm\,radian$$ which is too small for you ...