- #1
Loren Booda
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Do the walls of a single slit alone cause interference? In general terms, do all illuminated finite apparatus (e. g., a small sphere) include interference?
Loren Booda said:Do the walls of a single slit alone cause interference?
vishnu korde said:yes, interference takes place only at the walls and nowhere in the middle of the slit. of course if there are more number of slits the effect would be more!... this interaction can also be seen, when sun rises above a mountain..!... its again at the surface(mountain-air)...
ZapperZ said:This makes no sense. If I increase the width of the slit, the "walls" are still there. Yet, the interference/diffraction effects goes weaker and in fact, will no longer noticeable at some point. This observation contradicts what you claim.
Zz.
mn4j said:This is wrong! A half slit still diffracts. Note that a half slit is part of a double slit with infinite separation. So Vishnu's point is reaffirmed.
ZapperZ said:Yet, the interference/diffraction effects goes weaker and in fact, will no longer noticeable at some point.
mn4j said:Diffraction from a half slit is noticeable. That is an experimental fact. It may be weaker but it is not unnoticeable.
mn4j said:My understanding of the topic question was that he was asking an ontological question, of whether interference is observed in all illuminate finite apparatus, not whether the QM treatment accounts for it.
When vishnu suggested that diffraction only happens at the walls, your response to him was to suggest that he was wrong because widening the slit causes the pattern to no longer be noticeable at some point. I continue to hold that, such a claim is inaccurate because diffraction from a half slit is a well known phenomenon. Therefore no matter how large the separation between the slits, you will still observe diffraction. It is one thing to say the QM treatment does not explain this observation, it is another to claim that the observation does not exist because it does not fit the QM treatment. For this reason, questions about how the Fourier transform is done or any theoretical derivation is irrelevant.
Certainly you do not deny the fact that diffraction from a half slit is observed. So then, your claim that vishnu was wrong, is not substantiated.
yes, interference takes place only at the walls and nowhere in the middle of the slit. of course if there are more number of slits the effect would be more!... this interaction can also be seen, when sun rises above a mountain..!... its again at the surface(mountain-air)...
Interference in a single slit setup refers to the phenomenon where waves, such as light or sound, interact with each other and create a pattern of light and dark fringes. This occurs when the waves pass through a narrow slit and diffract, resulting in constructive and destructive interference.
Interference is always present in a single slit setup because it is a fundamental property of waves. When waves pass through a narrow slit, they diffract and interfere with each other, creating a pattern of constructive and destructive interference. This is true for all types of waves, including light, sound, and water waves.
No, interference cannot be eliminated in a single slit setup. This is because interference is a natural behavior of waves and cannot be stopped or prevented. However, the intensity of the interference pattern can be reduced by decreasing the width of the slit or by using a different type of wave with a shorter wavelength.
The width of the slit has a direct effect on the interference pattern in a single slit setup. A wider slit will result in a narrower interference pattern with smaller fringes, while a narrower slit will produce a wider interference pattern with larger fringes. This is because the width of the slit determines the amount of diffraction that occurs, which in turn affects the interference pattern.
Yes, interference in a single slit setup can be observed in everyday life. For example, when looking at a distant light source through a narrow opening, such as a doorway or a partially closed hand, you may notice a pattern of light and dark fringes. This is due to the interference of light waves passing through the opening and diffracting, creating an interference pattern.