Central not so maxima

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Central not so maxima

Post by The Confused Guy (O.o)? on Thu Aug 11, 2016 5:25 pm

as sir told ive fiddled with the settings and didnt get a central maxima in single slit diffraction



our textbooks have been wrong :O :O Shocked Shocked
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Re: Central not so maxima

Post by Student1 on Thu Aug 11, 2016 5:43 pm

Whatever we learnt in class 12th was under the assumption that the width of the slit was very very small and comparable to wavelength of light, perhaps that's why :/

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Re: Central not so maxima

Post by The Confused Guy (O.o)? on Thu Aug 11, 2016 5:45 pm

dont u see i was joking abt the last part Neutral Neutral
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Re: Central not so maxima

Post by Arnab Mukherjee on Fri Aug 12, 2016 9:23 pm

For single slit, the middle of the slit should have 0 path difference. Therefore, it should give a bright spot. However, there are several sources in the slit and therefore a mixture of bright and dark spot appear giving rise to only an overall change. Keep decreasing the slit to control the source and see if you get back the bright spot in the middle.

Can any comment why do we get lesser intensity in the middle in the examples shown by "The Confused Guy"?

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Re: Central not so maxima

Post by The Confused Guy (O.o)? on Sat Aug 13, 2016 11:36 am

is it bcos tat the slit is so big that the maxima is formed for each end of slit instead of it as a whole
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