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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Young's double slit experiment with a single photon

i am a year 12 student and as i was reading a book written by Brain Clegg, i hit a roadblock. It would be great if somone could help me out with this. when we conduct young's double slit experiment ...
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Kim delayed choice experiment

In Kim's delayed choice experiment as described in Wikipedia, you get interference patterns or not depending on whether you look at detectors D3 and D4 (which give you path information) or look at ...
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Double slit experiment with changes

Couldn't find information about this anywhere. Maybe someone can tell me where I might find it. What happens when the approach angle of the particle/light beam is changed as opposed to directly in ...
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Particle pattern of double slit experiment?

I hope this is not a stupid question, but has the particle pattern of a double slit experiment actually been observed or is it just in theory? Seems there are many results/pictures of the wave ...
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What's wrong with this experiment showing that either FTL communication is possible or complementarity doesn't hold?

The assumptions are: Alice and Bob have perfectly synchronized clocks Alice and Bob have successfully exchanged a pair of entangled photons The idea is simply to have Alice and Bob perform the ...
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50 views

Double slit experiment with a single photon stream

I would like to know if the following are true: Each time you fire a single photon, only one dot appears on the back screen. Is there ever a case that while we are watching the experiment, that a ...
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What are the exact setups to observe a wave function and its collapsed state?

I was reading this article: http://io9.com/5528321/how-smart-do-you-need-to-be-to-collapse-a-wave-function and I need some clarification on the experiment setup. My current understanding is that if ...
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Has the double-slit experiment been performed with animals as the observers?

As the title says, has the double-slit experiment been performed with animals (not humans) as the observers? If yes, which animal was used and what was the result?
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At what point do quantum wave functions collapse? [duplicate]

At what point do quantum wave functions collapse? Let me give you two examples to make that question more clear: Let us think of the double slit experiment. We humans see the light at certain ...
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New version of double-slit experiment

I am trying to find a definite answer whether the following version of the double-slit experiment has ever been performed. Calculate/observe what interference pattern should appear by emitting ...
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Inconsistency in illustration of double slit experiment?

So I have 2 questions: 1) In the following drawing, it seems to me that for a concentration spot to show up in the center of the receiver (orange dotted lines), the width of the emitter must be ...
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220 views

Derivation of equation of path difference in double slit

$p$ = Path difference $r$ = Distance travelled by the rays $x$ = Perpendicular distance between interference of the rays to the medium point of the incident rays $a$ = Vertical distance ...
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Alternate Young double slit experiment

What will happen in Young's double slit experiment, when instead of screen I put a black screen with a hole and a second screen behind the black one. Will it still form interference pattern albeit a ...
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If only one slit is observed in the Double Slit experiment, will the unobserved slit produce an interference pattern?

I am having a difficult time solving this. Say that electrons are emitted from a source S at a very slow rate. If both slits S1 and S2 are observed, we would have roughly 50% probability of detecting ...
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Can you predict the path of a particle headed for 2 slits?

In the Double Slit experiment, particles are shot at 2 slits. We know that the particles will show a striped pattern on the screen if unobserved, but show up directly behind the slits if observed. I ...
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315 views

Why is the shape of the fringes in Young's double slit experiment hyperbolic?

Why is the shape of the fringes in Young's double slit experiment hyperbolic? Morever what type of fringe pattern is obtained if slits are almost perpendicular to the screen? Can someone explain it ...
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1answer
53 views

Relationship between the the slit width $w$ and source distance $d$ [closed]

I read in a text of optics Eugene Hecht where i got that, missing fringes in a double-slit interference experiment results when diffraction minima cancel interference maxima. Is there any ...
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41 views

High energy photon collapsing into its own black hole

If I did not mess up the math, a photon with a wave length of $$ \lambda = \sqrt{2\pi}\, l_p$$ where $l_p$ is the Planck length has a mass (energy/$c^2$) of $$ m = \sqrt{2\pi}\, m_p$$ where $m_p$ ...
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Uncertainity principle and double slit experiment?

My Understanding of uncertainty principle goes that if some particles are in same state, then their measurement of certain property (say $x$ and $p$) will be different for different particles. ...
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4answers
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Clarification about Wave-particle duality

Okay,so I am learning about the double slit experiment done with electrons. I saw this picture, which shows the interference pattern being built up slowly with increasing number of electrons: I ...
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403 views

Double slit: Does human attention, such as meditation change the outcomes of the double slit experiment [closed]

From Dean Radin's article published in Physics Essays, the abstract states: Abstract: A double-slit optical system was used to test the possible role of consciousness in the collapse of the quantum ...
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Is it possible to reproduce Double-slit experiment by myself at home?

I want to reproduce this experiment by myself. What I need for this. What parameters of slits and laser/another light source it needs? Is it possible to make DIY-detector?
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Question about the double slit experiment 2

I had wondered if anyone has ever tried doing the experiment with molecules, then I came across this webpage ( http://www.livescience.com/19268-quantum-double-slit-experiment-largest-molecules.html ). ...
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1answer
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In double slit experiment how do we observe electrons near slit? [closed]

If we observe the electron near the slit, does it produces two bands instead of interference pattern. Also how do we observe electron. Is it by producing electric field. Also does double slit ...
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439 views

What is the wavefunction of the Young Double Slit experiment?

I have never seen the wavefunction for this experiment and would like to know how to derive it using the Schrodinger equation. I specifically want to see how the electron wave function leaves the ...
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4answers
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Probability of getting through a slit

In a double slit experiment with electron we cannot know which slit the electron went through. If we measure it then the interference pattern disappears. Is it possible to get a probability for ...
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A problem in deducing $|\psi(x)|^2 \propto \cos^2(\pi sx/\lambda z_o)$ in diffraction by two slits experiment

In Quantum Mechanics for scientists and engineers by David Miller, he explains the diffraction by two slits (page $13$) and considers a beam of electrons whose wave function is $\psi(x)= \exp(ikr)$ ...
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130 views

Double slit experiment exposed?

http://www.pnas.org/content/109/24/9314.full This experiment seems to show that the experimenters know that the photon went through just one slit and still observed an interference pattern on the ...
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In double slit experiments of particles (quantum) which the result is interference pattern, How many particles reach the observing screen?

I mean, I know the particles that reach the screen are going both/neither/either of slits and interference with themselves but statically/percentage how many particles interact with slits, are there ...
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2answers
173 views

Do our eyes act as observers at the quantum level? [duplicate]

This is a very high level question. I was just thinking about the idea than in quantum physics, the act of observing has a "strange" effect on some properties (e.g. double slit). If I'm staring at a ...
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170 views

In the double slit experiment, what is the position and momentum of a particle?

Is the position of an electron/photon which slit it went through? And the momentum of the electron/photon the wave-like interference pattern detected on the detector screen?
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Is double-slit experiment dependent on rate at which electrons are fired at slit?

I am a mathematician and I am studying string theory. For this purpose I studied quantum theory. After reading Feynman's book in which he described the double-slit experiment (Young's experiment) I ...
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Does diffraction occur before interference?

In the double slit experiment, light passes through two slits and the waves interfere and form an interference pattern. A single slit is required for diffraction. So, I was thinking about whether ...
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Why does moving the source-slit closer to the double-slit plane decrease the sharpness of the interference-pattern?

Thomas Young used a single-slit plane before the two-slits plane in order to make the light source coherent. My book (NCERT Physics II) presents the above query and writes: Let $s$ be the size ...
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Why does increasing/decreasing the distance between two fringes, decrease/increase the fringe-width in interference pattern?

I am talking about this equation $$w= \frac{D\lambda}{d} \\\ \text{where}\; D= \text{separation between the slits & the screen}\\\ d= \text{separation between the slits}\\w= \text{fringe-width}$$. ...
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A follow up on “Double Slit Experiment in a Bubble Chamber”

The exact title is "Has a double slit experiment ever been done using a track chamber or even contemplated?". I was totally unfamiliar with the concept of the bubble chamber, so I did some amateur ...
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Does the double split experiment set boundaries to the concept of localization?

Feynman's textbook on quantum mechanics starts with the double split experiment for single electrons, see chapter 1-5. The astonishing result is the self-interference of the single electron as long as ...
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A real 'two line' (non-interference pattern) when observed

I have seen many interference patterns from double slit experiments but I have never seen a real 'two line' pattern when observed. Does this actually exist or is it only a conclusion? if there is an ...
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113 views

Using the double slit experiment to prove or disprove the de Broglie-Bohm pilot wave theory

Probably a dumb question... If you have a double slit experiment with a second experiment (single or double slit) at 90 degrees intersecting the path of the first experiment, would the interference ...
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Do we know which slit the photon went through in Afshar's experiment?

I've been reading up on this experiment and it seems to be that even measuring the photon to only go through one of the slits, it still creates the interference pattern. Do we really know which slit ...
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Appartus for Young's double slit?

I am wanting a full description of an apparatus used for Young's double slit (not necessarily the one that Young himself used though), which takes monochromatic light (though not laser light) and ...
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29 views

Wheeler's delayed choice experiment?

when we remove the detector screen and use the telescopes to see which slit the photon went through, when do the telescopes detect which slit the photon passed through? Do they detect them a soon as ...
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How to arrive on the diffraction pattern for the double slit experiment using path integrals for the Gaussian slit case?

I wish to take the path integral route to derive the diffraction pattern for the double slit experiment using the Gaussian slits as the nature of the slits. The kernel looks like: \begin{equation} K((...
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99 views

Can the wall in the double-slit experiment be considered to perform a “half measurement”?

When talking about the double-slit experiment, most physics books consider the wall to be a infinitely high potential, so that the photon is either reflected or transmitted through one of the slits. (...
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How can i only shine/shoot one proton/electron per second? [duplicate]

I would like to test out the two slit experiment but only one electron or proton at a time. This question is different from the rest that people are saying are duplicates as I am clearly asking how ...
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29 views

What is the kernel for a double slit experiment? [duplicate]

In the book path integrals by Feynman and Hibbs, the author has established the kernel for a single slit in the Gaussian form. How can I find the kernel for a double slit in a similar fashion as ...
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268 views

Concerning the dark bands in the light “wave” interference pattern

I'll begin with a with a brief and familiar example to frame the question: |_>EXAMPLE ...
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276 views

Is the formula, for finding the distance between two slits, my books gives correct?

In my book'a section on Young's double-slit experiment, the formula, $d = m \lambda \sin\theta$, is given. In this equation $d$ is the distance between two slits, $\lambda$ is the wavelength of light ...
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Why are these two angles the same? [closed]

I can't find no similar or other relations between the two triangles, the two right triangles. However, if I look at it this way, the two triangles are indeed similar. But then this is a whole ...
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Is this diagram, concerning Young's double slits, inaccurate?

"This diagram" : My question is whether those lines (interference) have to originate from a single point. The diagram used to demonstrate what $m$ (path difference) means, has two lines originating ...