Question

diffraction of light can be exhibited by light with an obsttacle having dimension of the order of

Answer 1

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✴⚫↪ more generally, what causesdiffraction of light? Diffraction of lightoccurs because of its transverse wave nature. We have already said that whenlight hits an object, it is diffracted. This phenomenon is best understood by an examination of Huygens' Principle.
✴⚫↪an object, it is diffracted.  This phenomenon is best understood by an examination of Huygens' Principle. In 1678, the Dutch pysicist Christiaan Huygens wrote a treatise on the wave theory of light in which he presented a theory now known as Huygens' Principle.  It states that every point on a wave front can be thought of as a new point source for waves generated in the direction the wave is traveling or being propagated.  OR--  the wavefront of a propagating wave of light at any instant conforms to the envelope of spherical wavelets emanating from every point on the wavefront at the prior instant (with the understanding that the wavelets have the same speed as the overall wave). ⛦☺☺☺☺⛦