This post includes a video showing single slit diffraction of a LASER beam. The derivation develps formulas to find the diffraction maxima and minima as a function of angle.
Vocabulary: You need to be able to distinguish between these words, what they mean, and be able to draw diagrams for each.
(we’ll worry about Interference later)
You need to know:
Huygen’s principle of point radiators.
Small angle approximation
Derivation of position of maxima and minima using Huygen’s Principle of Wavelets
Single Slit Diffraction explained.