what is diffraction and interference
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Interferece :the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or cancelled.
diffraction:Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit. It is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle.
diffraction:Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit. It is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle.
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Diffraction is spreading of the beam of light as it goes through aperture or is emitted from a finite area source. It is due to the fact that the beam of light has some k-vector spectrum that has some finite width.
On the other hand, interference is a phenomenon resulting from a superposition of waves. They can have different amplitudes, frequencies or phases, and it will influence how the superposed final wave (a sum of all the interfering waves amplitudes) will look like.
This not only is seen in an experiment with two slits in space, but also you can use it to explain forming of ultrashort pulses through constructive interference of waves in some points in time and destructive in other. Two such pulses in close proximity (close here depends on the spectrometer resolution) will also create interference fringes in the measured spectrum.
On the other hand, interference is a phenomenon resulting from a superposition of waves. They can have different amplitudes, frequencies or phases, and it will influence how the superposed final wave (a sum of all the interfering waves amplitudes) will look like.
This not only is seen in an experiment with two slits in space, but also you can use it to explain forming of ultrashort pulses through constructive interference of waves in some points in time and destructive in other. Two such pulses in close proximity (close here depends on the spectrometer resolution) will also create interference fringes in the measured spectrum.
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