Questions tagged [double-slit-experiment]

The double slit experiment involves passing light through two parallel slits to demonstrate that the light from one slit interferes with that from the other.

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Why can't we decompose the position wavefunction differently?

If I understand correctly, we see the electron appear as a point on the detector in the double slit experiment because the position basis vectors are orthogonal. This ensures that we will only see one ...
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Understanding decoherence in the double slit experiment [duplicate]

I am trying to understand how decoherence explains the observation of only one possible outcome rather than observing the superposition. When the electron goes through the two slits it interferes with ...
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How does the electron understand that it being observed in the double slit experiment?

I was reading about the double slit experiment that proved the wave and particle nature of electron. I read that electrons give a diffraction pattern when they are not observed (wave nature) and ...
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Double-Slit with Polarizing Filter

A polarizing filter is placed in front of each slit with the two filters aligned perpendicularly to each other. My question is why does the produced pattern not have any dark bands? In terms of what ...
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Is there interferences between 2 electron wavefunctions?

The 2 slits experiment done with 1 electron shows interference from the "splitted" wavefunctions. EDIT: as precised in an answer, it is after many electrons goes in the experiment that the ...
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Generalization of the two-slit experiment for $n$ layers of 2-slits

Is there a generalization of the double-slit experiment where you have $n$ layers of solid plates with two slits on each plate, such that the plates are lined up exactly? In this setup for a classical ...
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Has the double slit experiment with classical projectiles ever been performed?

I was wondering if the double slit experiment with mascroscopic objects has ever been tried. In any course of quantum mechanics, a way to introduce quantum effects is to introduce the double slit ...
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How do you prove the particle went through both slits?

I'm only a casual reader so maybe i misunderstood something so far but here is my current understanding: The pattern we see from the 2 slit experiment emerges due to two probability waves, one ...
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Unplugging the detector in the quantum double slit experiment

I'm thinking about the quantum double slit experiment. Specifically the part where if you had a detector pointing at one of the slits, this would collapse the wave function and the interference ...
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Do double slit experiment with big balls [duplicate]

if we do the double slit experiment but we shoot metal balls in a closed box so we don't observe. what pattern comes then on the board? if i understand correctly there will be no interference pattern ...
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Quantum Erasure - what causes the phase difference in the two interference patterns observable at Do?

In the Delayed Quantum Erasure experiment, I understand that the interference patterns that you would see at Do is associated to the entangled photons that eventually arrive at D1 or D2 (which-way ...
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Rayleigh scattering not applicable to the double-slit experiment

In Rayleigh scattering a photon penetrates into a medium composed of particles whose sizes are much smaller than the wavelength of the incident photon. In this scattering process, the energy (and ...
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Why are hyperbolic fringes of minimum order and circular of maximum at the centre

In young's double slit experiment why is it that hyperbolic fringes formed at$y=0$ are off minimum order, while circular fringes (that are formed when line connecting the two slits is perpendicular on ...
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Double slit: does some electron stop at the slit material?

I have a very simple question about the double slit experiment with electrons. Does some electron does not pass through the slits at all? All explanations I read about the experiment demonstrate the ...
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Could a photon interact with itself disrupting its path?

I don't have a physics background, just a hobbyist. I just started taking differential geometry to try and understand the math behind relativity, and have limited knowledge of Quantum mechanics. I ...
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Smart way to check if problem is solvable by using double slit experiment [closed]

In a famous double slit experiment if you make observations of particles, but then delete the data not looking at it, it will happen that light acted as a particle. My question is, what if we didn't ...
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What is the interference pattern with two sequential double slit screens and one detector? [closed]

An experimental setup with a particle emitter, a double slit screen (A) with a detector at one slit to monitor particle transit, a second double slit screen (B) without any detectors and a capture ...
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Why isn't the final screen in the double slit experiment a 'detector' which would collapse the wave function retroactively?

I'm sorry if this is a stupid question but I'm someone who is not from the physics world trying to learn about this for the first time (I'm reading Daniel Golding's Quantum Physics for Beginners and ...
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Feynman's non-rigid double slit experiment

I am currently reading Quantum Mechanics and Path Integrals by Feynman and Hibbs, and in the very first chapter, Feynman qualitatively tries to motivate the Uncertainty Principle. He started out with ...
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Quantum interferometer with floating mirrors

I send photons one at a time through a Mach–Zehnder interferometer with two detectors. Quantum superposition ensures that photons only reach one of the detectors. The interferometer is initially ...
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Should a vertical laser beam placed in front of a single slit affect the vertical position of the electron diffraction pattern on the screen?

Aftr watching this video I have to ask something...For a better understanding of the wave-particle property of the electron I need this answer to grasp about wave function combined with particle ...
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Double Slit -> $N$-Slit: Does Which-Way Information change in terms of number of bits?

Suppose an electron is fired through a double slit. We all agree that the electron is now non-deterministic, and will arrive at its destination in a single spot, but it will have travelled there as a ...
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Diffracted Electrons vs Particulate Electrons (Collapsed): Is there an experimental difference in terms of Double Slits and/or Which Way information? [closed]

In this community, it has been accepted that electrons can self-interfere. Can an electron interact with itself to create interference? This video is a good lecture on diffraction gratings and plane ...
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Why doesn't decoherence spoil the double slit experiment? [duplicate]

Imagine firing one electron at a time at a double slit. Clearly the wave function interacts with the atoms of the material, and presumably many electrons do not pass through. Why does decoherence from ...
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Double Slit and Self Interference of Electrons

I have not been able to get a clear notion of how particle waves are different than photon waves. So I'll take a different approach. With a diffraction grating, light can be shifted from a beam to a ...
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DoubleSlitExperiment: Will a laser beam in front of the slit dramatically change the trajectory of the incoming electron?

Let say we believe that we can get 'which-path-information' so put a laser beam of best matching frequency in front of only one of the two slits so it can deflect the electron in direction the laser ...
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What are $p_a$, $p_b$ and $p_x$ in Feynman's wall with rollers experiment?

Here's Figure 1-6 from section 1-8 of the "Quantum Behavior" chapter from the Feynman Lectures: And the excerpt which my question is about: ... if we determine the momentum of the plate ...
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How close were the slits in Young's experiment? [closed]

How close were the slits in the 1801 Young's double slit experiment and how could the scientists manage to produce such a microscopic precision while manufacturing the apparatus with the 1801 ...
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Young's Two-Slit Experiment Without Slits

It ought to be possible with modern technology to replace the two slits of Young's two-slit experiment with a single emitter which is moved laterally (at random coin toss) to a position equivalent to ...
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Interference through double slit caused by slit interaction?

How do the experimenters ensure that the interference pattern produced in the double slit experiment is not due to the interaction of the atoms at the boundary of the slit and the particle (photon/...
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What does Art Hobson mean/explain in his article “There are no particles, there are only fields” regarding the double slit experiment?

So I have been reading about fields in physics. I am reading Art Hobson's "There are no particles, there are only fields" published in The American Journal of Physics in 2013, and I am ...
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Two different beams of same frequency light passed through the double slit

We all know that when one beam of discrete frequency passes through the double slit makes an interference pattern. What is interesting to me is that in that case the beams which diffuse from the slits ...
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Multiple-Slit Interference Clarification

Source: https://openstax.org/books/university-physics-volume-3/pages/3-3-multiple-slit-interference $dsin(\theta) = m \lambda$ (1) where $d \mbox{= spacing between slits}$ $\theta \mbox{= ...
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Multiple-Slit Interference: Secondary Maxima Clarification

I am not sure what to be looking for when observing the secondary maxima of a multiple slit interference. What does it mean when secondary maxima occurs (n-2) evenly spaced positions between the ...
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Why are the dark fringes dark in the double slit experiment?

There are a lot of questions about the double slit experiment on this site, none of them answer my question specifically, and there are basically two theories why the dark fringes should be dark: ...
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Young's Double Slit Experiment: Angle between incoming waves

Consider the experimental setup for Young's Double Slit Experiment: Here there is an angle between the directions of propagation of waves ,i.e., $\angle S_1PS_2$ - the angle between the electric and ...
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In the double slit experiment, how the uncertainty principle contribute to verify the complementary principle?

With the double slit, experiment we show the double nature of light and matter as wave and particle. In particular, the so called "which way" thought experiment illustrate the complementary ...
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Single photon beam in YDSE

In Young's double slit experiment, we usually shine a beam of light over two (or more) slits, as a result of which an interference pattern is observed on the screen. This is because as a beam passes ...
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Implications of the delayed choice quantum eraser experiment [duplicate]

The experiment says that if I split a photon into two coherent entangled photons, one towards a double-slit, one towards a which-way detector, I can control whether the interference pattern appears ...
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How does a pinhole aperture convert incoherent monochromatic light into coherent light? [duplicate]

Textbook suggests that before conducting a double slit experiment, incoherent light is first passed through a single slit to make a coherent point source of light; the point source can be explained by ...
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Type of camera that is used in a double slit experiment [closed]

I need to know the type of camera that is used in a double slit experiment. Both with photons, and that with electrons? Can someone please answer. The type of camera that is used for observation. Is ...
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Are all methods of solving YDSE problems equivalent?

In YDSE, $D=1m$, $d=1mm $ and $\lambda=0.5mm$. Find the distance between the central maximum and the first maximum. My attempt: The distance between the central maximum and the first maximum is the ...
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Experiments with particle and light that I don't understand [closed]

I have these following two experiments that seemed not so clear for me Michelson Morley experiment - The first one is the experiment from Michelson and Morley who proved (if I'm not wrong) that the ...
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Feynman’s electron double slit experiment?

I have seen several questions on the site about this, but most of them get bogged down into new complex interpretations of quantum mechanics. For reference, I am a high school student just starting to ...
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Wave and particle nature of light during detection in a single-photons double slit experiment

I am just a curious physics student. This question is about the nature of light. In a single-photons double slits (or multiple slits) experiment, the interference pattern or the distribution of the ...
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Young slit conundrum - Finding positions of maxima when one of the slits emanates light with phase difference

Second guessing myself a bit here, but I've run into a bit of an issue. The problem I'm trying to solve is this: Coherent light of $532nm$ is passing through a double slit, which are separated by $25\...
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Finding the distance from source in triple slit interference

I was wondering about the nature of the 3 slit interference pattern, as shown in fig 1. The line labelled LT/2, matches with fig 2 and all other diagrams I have seen depicting the same thing. I was ...
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Thought Experiments

Can anyone please explain to me the importance of thought experiments? How does one arrive at a conclusion in a thought experiment. Like for example, the electron through double slit experiment is a ...
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Many-world interpretation of double slit experiment

Different interpretations of young's double slit experiment is available, I read Copenhagen and Feynman's path integral interpretation of double slit experiment; former uses the idea of wave function ...
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Does quantum field theory and field excitations explain the double slit experiment?

I'm a student and I'd like to confirm my understanding of Quantum field theory (QFT). QFT says particles are actually excited states in pre-existing fields. Each field is only excited with specific ...

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