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.

Filter by
Sorted by
Tagged with
0
votes
1answer
157 views

Is the double slit experiment performed measuring single photons?

As a hobby physicist I don't understand how the double slit experiment is performed in terms of single photons. Is the experiment really conducted by sending and measuring single photons? Is there not ...
0
votes
1answer
71 views

Does the Cornu Spiral change?

The Cornu Spiral is used in calculations for Fresnel Diffraction. I have seen images of the Cornu Spiral and cannot find an answer to this question: Is the Cornu Spiral a constant reference graph ...
0
votes
0answers
138 views

Energy conservation in double slit inteference pattern - plane vs spherical waves?

We know that plane waves are not physical because they do not conserve energy, as $\int |e^{i kx}|^2 r^2\mathrm{d}r \rightarrow \infty$. This is solved, however, by introducing spherical waves: $$ \...
5
votes
1answer
179 views

Unusual shape of maxima in one slit experiment?

I'm experimenting with the one slit (and eventually two slit) light diffraction phenomenon. The set up is simple (excuse the clutter): The laser is a $532\ \mathrm{nm}, 1\ \mathrm{mW}$ device, ...
1
vote
0answers
40 views

In the double slit experiment for electrons, what are the materials used for the detection screen?

for example, what material is used as the detection screen for electrons. What materials can be used when conducting the experiment to be able to see the detected electrons on the detection screen?
1
vote
1answer
3k views

Young's double split experiment, the slit width

I realize that there is a lot of topic's mentioning this, but I think my question is rather new compared to many of them. First of all, this is part of a school assignment, and our object is to ...
1
vote
1answer
212 views

Corpuscular theory of light and Double slit experiment

Physicists would initially have attempted to explain Young's double slit experiment's results using the concept of light as a stream of particles, ryt? Can somebody tell me what these attempts were ...
2
votes
1answer
75 views

How does a single-photon double-slit experiment work? [duplicate]

With respect to Thomas Young's double-slit experiment, I have heard that it can be done with a single photon. But how does the single photon go through both slits? And how far apart are the slits?
1
vote
1answer
315 views

Michelson Morley Experiment- how are fringe shifts created?

Currently, I understand that under the aether model, the two perpendicular light rays (which were created when a monochromatic light was split by a half silvered mirror) will be out of phase when they ...
1
vote
2answers
787 views

Double slit experiment - what defines the distance between slits

Bit of a physics newbie but I can't find the answer to this anywhere. When conducting the double slit experiment it seems that the distance between the slits is somewhat important and my reading ...
0
votes
1answer
73 views

double slit experiment with one-photon per trajectory

Suppose that we have a light emission apparatus capable of emitting only one photon. Then we set this photon to pass in a double slit apparatus and emerge in a black screen such that when it is ...
1
vote
0answers
121 views

Producing double-slit interference in string theory

My full question is What brane configuration most economically reproduces a double-slit interference effect? It was inspired by this question, which asks whether string theory has anything to say ...
2
votes
4answers
2k views

Double Slit Experiment. What effect does the detector actually cause?

When a quantum of light arrives at a double slit, it passes through both slits as a wave and arrives upon a second screen with the interference pattern of a single wave that has been split into two ...
-1
votes
2answers
63 views

particle wave duality [duplicate]

A single photon travelling within a single wavelength contains a dual nature, in that it can behave as a particle or a wave depending upon the chosen experiment or measure. When the duality behaves ...
2
votes
3answers
85 views

Is there an objective asymmetry between a collapsed and un-collapsed wave function?

In a quantum double slit experiment, one starts at t0 with a wave function that propagates through two slits, interferes, and probabilities for various positions at the final stage at t1 can be ...
-2
votes
1answer
2k views

Fringe pattern in Lloyd mirror [closed]

(source) What will be the fringe pattern on a Lloyd mirror? More accurately: Does a Lloyd mirror has same fringe pattern as Young's double slits experiment (YDSE) but just reversed and if they are ...
1
vote
1answer
80 views

strange interference pattern of light on top of tower , pattern was seen on air . What was it?

I was just looking out of window at night when i saw a tower with a light on top. It had a red light . When i looked at it through my curtains with net on i saw an interference fringe , one is the ...
0
votes
1answer
542 views

White-light double-slit experiment with an LED

This answer and comments state that you can perform Young's two-slit interference experiment with white light and get a pattern of colored interference fringes. I've got some white LEDs lying around ...
23
votes
3answers
8k views

Double slit experiment at home failed

At night, I went outside. I had a box with two slits in it. I directed torch light towards it, but I saw only two bands of light on the wall and shadow from the rest of the box. Why did it not produce ...
3
votes
1answer
2k views

Filling with water the space between Young's double slits and the screen

Suppose while performing double-slit experiment, the space between the slits and the screen is filled with water. How does the interference pattern change? The above is one of the questions which ...
4
votes
2answers
726 views

Young's double slit experiment - homemade

I want to do the double slit experiment to demonstrate the particle-wave-duality to people outside of physics. I can do it on paper and try to explain the maths and physics behind it, but it is a dull ...
1
vote
0answers
176 views

Young's double slit problems: What is the difference between first bright fringe vs first maximum vs first order maximum?

Sometimes the question related to young double slit will trick me by asking you to find the width of first maximum or first order maximum or first bright fringe from the central maximum? What are ...
1
vote
1answer
314 views

What happens if you replace the first slit in Young's experiment by an extended source?

So, my understanding is that in Young's experiment you first have a single slit, which helps you create the point source and then the two slits. My question is: what happens when you take out the ...
0
votes
1answer
141 views

Idea for the Double Slit Experiment/Quantum Eraser

I wanted to ask about an idea I got about the Double Slit Experiment. As you may know, you can use the Double Slit Experiment to have particles form an interference pattern with themselves, however, ...
0
votes
1answer
456 views

Young's double slit experiment, slit separation

I just wrote a test and there was a question on young's double slit experiment...we were given the width of the slits and the sepration between their centres My question is...In making calculations ...
0
votes
1answer
163 views

Difference in amplitude of field taken for single slit and double slit experiments

In this PDF on the derivation of intensity at any given point on the screen from single slit diffraction, on the first page, the amplitude of the wave produced by a small element is taken as $E_0/N$. ...
1
vote
1answer
317 views

Where does the interference pattern or diffraction pattern due to a single or double slit placed in front of a light source form?

I have seen that when we use a spectrometer for performing an Optics experiment involving a single slit or double slit to study , say the Fraunhofer Diffraction pattern or some interference pattern, ...
2
votes
2answers
1k views

Does QFT re-interpret the meaning of the wave function of Schrodinger's equation?

I'm wondering if quantum field theory re-interprets the meaning of the wave function of Schrodinger's equation. But more specifically, I'm trying to understand how to explain the double slit ...
0
votes
1answer
49 views

What does observing mean in this case?

Let us consider a particle emitter which emits a sample of green colored particles the size of a beach balls and mass of a proton. Now a doubly slit screen is placed in front of this emitter and ...
0
votes
1answer
961 views

light intensity through a double slit [closed]

When a light source with a given intensity I emit through a double slit (or triple slit) how does the intensity of the first maxima change in regard with the initial one?
2
votes
0answers
87 views

Asymmetric interference picture when screen is not perpendicular to wave normal

In a physics class, we performed a double-slit experiment and observed that when you rotate the screen so that it is no longer perpendicular to the wave normal, the symmetry of the maxima breaks down. ...
1
vote
1answer
70 views

How is the wavefunction of an electron affected by the presence of an atom at the slits in the double-slit experiment?

I'm reading on page 107 of this Van Kampen's paper that the apparatus influences the electron even without detecting it. The interference pattern we obtained ...
1
vote
1answer
1k views

In Young's double slit experiment, why are the two theta values equivalent?

I've read several answers on here to similar questions, and I've also looked at several different picture interpretations to no avail. I can't wrap my head around it. I understand that under the ...
0
votes
3answers
803 views

Why is a slit needed in Young double slit experiment?

Why is a slit needed in youngs experiment? Can two coherent light sources not undergo constructive and destructive interfernce without the need of a slit?
1
vote
0answers
57 views

Double slit fringe height

The fringes in the double slit don't appear in a 2D plane as the usual constructive interference analogies usually indicate (i.e. with the water waves). Also the laser, or light source is usually not ...
2
votes
0answers
59 views

How does the detector at the double slit work?

How are the particles in the double slit experiment detected when we detect them going through one slit or the other? My assumption has been that the detector itself must interact with the particle in ...
0
votes
0answers
34 views

Is there any published record for quantum mechanical version of double-slit experiment with & without disturbance?

Can anybody provide the published record (journal papers) for the following experiment done actually in lab ? Young's double slit experiment with electrons or other particles (other than photons)...
1
vote
0answers
122 views

Why a 45° polarizer brings back the interference pattern in the quantum eraser experiment?

I'm not a physicist, I'm just a physic-enthusiast.I have a practical sense of experiments and results but i cannot deal with the actual calculation involved. I was reading about the quantum eraser ...
0
votes
1answer
249 views

Is there a clear probability density function of the place of the photon on screen, in Young's Double-slit Experiment?

I am a Mathematics student, also interested in Quantum Physics. Recently a question about the Young's Double-Slit Experiment has attracted me in the topic: Is there a closed formula (as a function of $...
1
vote
2answers
541 views

How does the de Broglie-Bohm picture explain the double-slit experiment with single particles?

If the particle has a single well-defined trajectory in the de Broglie-Bohm theory, how come that the interference pattern still appears even with single particles?
1
vote
1answer
515 views

The impact of refraction on a double slit interference pattern

Source: isaacphysics.org This set up, without the glass, would produce a standard interference pattern, with a bright central maximum followed on both sides by progressively dimmer maxima. Placing a ...
1
vote
1answer
150 views

When was the original Double Slit Experiment (by Thomas Young) conducted? [closed]

Is there a published date, or is only the year (1801) known?
0
votes
0answers
41 views

Modified double slit with interferometer

Imagine I do a setup as seen in the picture below: burrowed concept from LIGO, the idea here is to use the gravitational force exerts by the heavy particle to bend the laser beams when passing through ...
5
votes
2answers
221 views

What are some quantum mechanics experiments that can be done with household items?

I am interested in witnessing principals of quantum mechanics (Superposition, Quantum entanglement, Quantum tunneling, etc.) with simple household items. The experiments that I have already tried are:...
1
vote
2answers
361 views

Far Field Approximation in Young's Double Slit Experiment

I am studying some things surrounding the Young's double slit experiment and am trying to understand the derivations. The part that is not clear to me is the far-field approximation. That is, I ...
3
votes
0answers
464 views

Validity of Born Rule [closed]

The Born rule has been very successful in quantum mechanics. However, the interesting fact about this rule is that it only allows pairwise interference. In other words, there are no interference terms ...
2
votes
1answer
363 views

Why use double-slit when single-slit show interference?

When discussion diffraction, a typical experiment to use to demonstrate it is the double-slit experiment. For example, in the historical discussion about corpuscular vs wave theories, they cite Thomas ...
0
votes
1answer
58 views

Young slit experiment intensity integral

I have a little problem with this integral which shows up in a demonstration about the intensity at a point M on a screen. Primitive of $\cos (ax+b)$ is $\frac{1}{a}$($\sin (ax +b))$. I do not ...
1
vote
1answer
354 views

Does particle's speed affects double slit result?

Just curious did anyone try to do double slit using particles traveling at the slowest speed possible, imagine the particle trajectory subject to Earth's gravity and the screen is on the floor. This ...
1
vote
1answer
62 views

Modified Double Slit (Screen at right angle)

I have prepared a setup similar to the original double slit experience with a little adjustment, I carefully traced out all the paths after particles exits the slits. Then I place 2 screens at right ...