The Fourier transform of f (x) is
The graphs of f (x) and T (u) for u = 3 are shown in Fig. 1.9a, b, respectively
Note that the above transform finds an application in the FraunHofer diffraction.
˜f (ω) = A sin α/α
This is the basic equation which describes the Fraunhofer’s diffraction pattern due to a single slit.
