Wavefronts, Huygens’ Principle

Wavefront and Huygens principle

Wave Front|Huygen's Principle

(a) Define a wavefront. Use Huygen' principle to shown diagrammatically the propagation of a plane wavefront from the intant t_(1)=0 to later time t_(2) . (b) State briefly two features which can distinguish the characteristic features of an interference pattern from those observed in the diffraction pattern due a single slit.