Single slit diffraction & double slit interference - Lab Report Example

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Single slit diffraction & double slit interference

Hence, diffraction patterns usually have a series of maxima and minima.
The slit must satisfy two conditions in order the diffraction occur: first, the slit should has dimensions of infinitely length to width and second, the width of the slit is on the order of the wavelength of light being used.
The wavefront from a light source will form secondary waves. The one located at the top edge of the slit interferes destructively with other secondary wave located at the middle of the slit, when the path difference between them is equal to '/2. Similarly, the secondary wave just below the top of the slit will interfere destructively with the secondary wave located just below the middle of the slit. Thus we can conclude that the condition for destructive interference for the entire slit is the same as the condition for destructive interference between double slits with distance equal to half the width of the slit. The path difference is given by:
When monochromatic light illuminates a double slit aperture having dimensions of the order of the wavelength of light, diffraction of light occurs if the slits width much narrower than there lengths. The incident wavefront will divided into two point sources of light which can interfere with each other to produce an interference pattern
1. Constructive Interference - When the path difference between the two beams in an integral multiplication of the wavelength. ...Show more

Summary

Diffraction arises from the way in which waves propagate as described by the Huygens-Fresnel principle. The wave propagates by considering every point on a wavefront as a point source for a secondary wave. These secondary waves recombined and subsequently propagate forming the new wavefront…
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Single slit diffraction & double slit interference essay example
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