Fresnel Assumptions
- The entire wavefront can be divided into a large number
of elements or zones of small area such that each of these elements acts as a source of secondary waves emitting waves in
all directions.
- The effect at any point “O” will be the resultant of the
secondary wavelets reaching “O” from various elements of the
wavefront.
- The effect at any point due to a particular zone depends
on (a). the distance of point from the zone. (b). the inclination
of the point with reference to zone under consideration.(c).
area of the zone.