E26 - Diffraction pattern due to a circular disc and a narrow wire

Fresnel's diffraction pattern for an opaque circular disc and a narrow wire are discussed in this video. To know the interference concept please refer this video(https://youtu.be/3hG-4q8FrH8) to know more about Fresnel's Half period zones please refer this link (https://youtu.be/Vddaw23yaSE). For Graduate level Optics - BSC PHYSICS- SEMESTER 3-OPTICS AND SPECTROSCOPY,