Light Emitting Diodes $($LEDs$)$ are semiconductor devices that emit light at specific wavelengths without emitting at any other wavelengths. LEDs can be used to create lasers that are very compact since they are a solid state device. A pair of narrow, parallel slits separated by $0\mathrm{.}228$ mm are illuminated by the green LED laser $(=546\mathrm{.}1$ nm$).$ The interference pattern is observed on a screen $1\mathrm{.}55$ m from the plane of the parallel slits.$($a$)$ Calculate the distance from the central maximum to the first bright region. m$($b$)$ What is the distance between the first and second dark fringes? mAdditional Materials