ABSTRACT

Constructive and/or destructive interference arises from the superposition of waves. Previously, we examined the interference pattern generated by

two coherent point sources of light.

Phase difference: 2

sindx 

 2

 nd 

The term diffraction describes the interference pattern arising from the superposition of an infinite number of point sources of light waves and arises when the light waves interact with some obstruction in the light path. Diffraction effects become more pronounced when the dimensions of the object are comparable to the wavelength of the light.