Coupon Accepted Successfully!


Fresnel diffraction

If either source or screen or both are at finite distance from the diffracting device (obstacle or aperture), the diffraction is called Fresnel type.
Common examples: Diffraction at a straight edge, narrow wire or small opaque disc, etc.
Fig. 13

Fraunhofer diffraction

In this case both source and screen are effectively at infinite distance from the diffracting device.
Common examples: Diffraction at single slit, double slit, and diffraction grating.
Fig. 14

Test Your Skills Now!
Take a Quiz now
Reviewer Name