## Double Slit Experiment

The double-slit experiment is the observation of the pattern that a single wavelength of light creates after passing through two slits.

Light passes through each slit and then creates a light or dark pattern depending on interference.

If the thickness of the slit is \(a\), the spacing between the slits is \(b\), and the diffracted angle \(θ\), the brightness \(I\) is as the formula below.

The top graph shows the diffraction effect of a single slit,

The middle chart shows the interference effect caused by the double slit.

The last chart shows the resulting pattern by overlapping the two effects.

Please refer to the link below to view the chart interactively.

https://www.geogebra.org/m/ynwgtfk8