Question

whats the differnce between interference and diffraction

Answer 1

hey hi.....

here the difference is ...

>>Diffraction occurs when a wave encounters an obstacle or a slit these characteristic behaviors are exhibited when a wave encounters an obstacle or a slit that is comparable in size to its wavelength, whereas Interference is the phenomenon where waves meet each other and combine additively or substractively to form composite waves. In a sense there are similarities in the fact that both phenomena from a given wave produce other waves .. .....The main difference is the mechanism, diffraction involves a wave and some obstacle or object which deflects the wave or bends it and intereference involves a wave which combine with other waves. In physical experiments both these phenomena can happen and be part of the same overall phenomenon....
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hope this helps....

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Answer 2

interference is a result of superposition waves starting from two different wave fronts.
diffraction is a result of superposition waves starting from different portion of same wave front.