Double slit experiment Definition and 484 Threads

Hi everyone, Lately I have been reading about the double slit experiment, I am wondering if it would be possible to recreate this experiment with visibly large objects using magnetism. The experiment I was thinking might be able to do this is as follows: There are two vertical tubes, a...

Hello, fellow physics lovers. I am an amateur physicist and am currently teaching some fellow keen amateurs about the marvels of the quantum world. After explaining the dual nature of light and conducting a very basic example of Young's double slit experiment using a laser and a sheet of card...

Ok, so I've just started studying quantum physics with the introductory double slit experiment. I thought I had a pretty good grasp on the results of the experiment but my tutor says I don't. This is what I interpreted from the experiment: Both slits are open. We place a detector along...

Hello, I'm new here, but I've been researching this subject for several months now. I'm especially interested in the double-slit experiment performed with one electron at a time, particularly with the detection apparatus turned ON. I've found this statement, or something very much like...

What is the effect of decreasing the widths of slits in double slit experiment?

passing a black hole from double slit experiment setup Hello, Theoretically any object can convert into black hole by compressing its mass below some radius( describe by Schwarzschild Radius). Suppose one of this object after becoming black hole have radius which is comparable to atoms and...

Just a question about the naming of optical phenomena. I've taken these explanations from a book I'm using: Diffraction is when a single wave passes a slit or obstacle and spreads out. The single wave produces a diffraction pattern. Interference is when we have more than one source of...

In double slit experiments detection of individual electron has very massive effect on the result. Now suppose in dark room we perform double slit experiments with two observers (who cannot communicate with each other). Now those two observers have eyesight that can see individual electron in...

Hello, Very recently i learned about the quantum theories and the double slit experiment.. honestly i was startled from what i have seen and heard of the quantum laws known for us at this time.. Well i can't help it but my mind keeps asking zillions of questions and it's not stopping.. :P...

Homework Statement Explain the idea of complementarity in the context of the double slit experiment for electrons by using the Heisenberg Uncertainty principle. Homework Equations ΔxΔp ≥ h-bar/2 The Attempt at a Solution I understand the definition of complementarity but don't...

Hi, imagine setup with source of entangled photons (A and B). Photon A travels to double slit so that either wave or particle pattern can be observed, photon B hits detector either before (setup 1) or after (setup 2) photon A has hit screen. Question: Will setup 1 show interference pattern...

Hello, I am trying to recreate the double slit experiment using ordinary light, i.e. sunlight or light from a light bulb or torch. I do not wish to use a laser for various reasons. I have experimented with the distance, spacing, and width of the slits, but I cannot get an interference...

Hi all. I am just trying to get my head around the double slit experiment(I know I am not the first) I am stuck trying to understand the initial state of the individual photons when they are being fired sequentially.(their direction and place of origin)(where the quantum confusion sets in) An...

What happens if the screen in young's double slit experiment is replaced with a photoelectric material? Electrons should be emitted only from regions where constructive interference occurs! Doesn't that mean in this case light will depic both wave and particle nature? That is clearly not...

I was reading about the double slit experiment, and had an idea. Can anyone tell me if there is a test which negates this idea - or if someone has proposed/proven it. Say the photon goes through one slit, but a super small amount of energy (currently not possible to recognize as being...

In class we did a lab regarding the wave nature of light. We pretty much conducted Young's double slit experiment. For the lab we were supposed to establish the relationship between the distance from the slits to the viewing screen and the distance between successive maxima. Can anyone...

Hi, I'm not a scientist, but a documentary filmmaker doing research on the nature of reality. An essential disclaimer as my question might seem a bit superficial to most you guys who work in the field. I would like to know how the pilot wave theory to quantum mechanics explains the double...

I recently learned about the electron double slit experiment, and I'd like to know more about the detectors used to track which slit the electron passes through. When the detector is turn on, the electron acts like a particle, and when it's turned off, the electron acts like a wave. I'm...

Something I've wondered about the Double Slit Experiment is what happens to photons which fail to pass through either slit, and what is their behavior? Why not put some detectors on the source side of the slits during a double slit experiment to try to determine whether the photons are...

What happen if I send electron 1 at a time and I use a detector but my detector don't show result neither record it (I setup it that way)? I presume the interference pattern is destroyed since the detector detect in which slit the electron go ? Do I am correct?

Okay it's been well established that objects with momentum exhibit wave like properties. Hence, electrons being observed forming interference patterns when scattering off of crystal lattices. Also I recently read this webpage. At the bottom it mentions performing a double slit experiment with...

I have to do an experiment for my physics class and I was thinking of doing the double slit experiment. Ideally I'd like to do the single photon version if its possible but I realize that's probably too ambitious. If I used neutral density filters to reduce the output from a laser pointer how...

Hi In double slit experiment our observe can change the past and in the entanglement our observe affact other particle pair. How could such a thing possible ?

Homework Statement Suppose that light is incident on a double slit apparatus, with a slit separation d at an angle of ∅ (phi) to the normal (see attached diagram). A) Derive an equation; in terms of the variables d, ∅, θ, integers m, and the wavelength λ of the incoming light; that yields the...

This is another one of those things that I had always assumed to have a very simple explanation. After all, I've seen so many simulations of waves interfering with each other and forming the distinctive interference pattern, and even watched the patterns emerge in actual water waves. The pattern...

I was thinking of finding a new hobby, and thought that playing around with the double slit experiment might be interesting. I was wondering how feasible it would be to set up the double slit experiment, not simply the laser and slit version shown here...

The double slit experiment shows that light is a wave, unless observed at the point where photons enter the slits. If observed there, the result of the experiment shows light as particles. What I want to know is: 1.) What instruments are used to observe the photons as it passes through the...

I think I am on the right track in understanding QM because I am very confused :smile: Few questions: 1. Let's say electrons are emitted from the electron gun towards a slit. Do the electrons display the wave property even before passing through the slit right after leaving the electron gun or...

Homework Statement The question is regarding Young's double slit experiment. "Describe the effect, if any, on the separation and on the maximum brightness of the fringes when the following changes are made. ... ... 2) The wavelength λ is increased to 1.5λ, keeping a and D constant...

Here is a noobie thought. We all know the double slit experiment (say for electrons) and the explanation that electrons behave like both wave and a particle. So they pass through both the slits forming the interference pattern. But I think a quanta (electron in this case) behaves like a...

So I asked this question in another thread but thought the question was probably best asked here in this forum to at least understand part of the experiment. My idea follows the traditional train and platform analogy that is used in many thought experiments to explain the issue of simultaneity...

So I'm curious. When in one instance where light behaves as a wave and you get an interference pattern, and in another instance where light behaves as a particle and you don't, does the intensity of the inner most bands of light change at all? When we place a detector beside one of the slits and...

Homework Statement I need to derive the intensity distribution of the double slit experiment. Intensity as a function of the slit separation d, the distance to the screen L and the wavelength \lambda. L>>d Homework Equations The Attempt at a Solution Ok this is ridiculous but...

Hi, I`ve been reading and watching videos about the double slit experiement, and when scientist fire one electron at a time through the double slits, and the do not interfere, how does that prove that there are more dimensions and that sub atomic particles are in a superstate. How does that...

Homework Statement using the formula Δy = λL/ d calculate the fringe separation (d) for the red and blue light used in the experiment Homework Equations as above The Attempt at a Solution So I rearranged the equation to read d = λL / Δy and I'm fine with the math, but I...

Hello, I'm trying to set up an experiment to measure the distance between tracks in a CD, using only 3 items. I can only use a cardboard box, a ruler, and a laser pointer, and I will be using a double slit. So I'm thinking I will cut two slits in the carboard box, place it in front of the...

Im somewhat new to modern physics, had one introductory class in my university and because it fascinated me so much, I've watched all the leonard susskind lectures on quantum mechanics, entanglement, and particle physics on youtube on the Stanford channel. Today I noticed something strange...

Homework Statement In a version of Young’s double slit experiment, the slits are separated by a distance of 1.0 mm. The light from the slits is observed on a screen that is 12 m from the slits. If the wavelength of the light is 550 nm, what is the linear distance on the screen between the...

I've been reading & watching videos about the double slit experiment, and I'm failing to see what's so interesting & strange about it (I hope someone can enlighten me on what I'm missing). The weirdness is NOT the fact that observing an electron changes it's behaviour (right?) At first I...

The Double Slit Experiment & its Connection to "Pseudoscience" Introduction Hello everyone :), thank you for taking the time to view this as I have ALOT of questions regarding The Double Slit experiment and its connection to "The Law of Attraction" (LOA) or what many call pseudoscience. I...

The meaning of double slit experiment... As i understand the outcome of the double slit experiment is firstly the Photons of light that were fired have no true location and seem to jump about and interact with themselfs. So my question to that is, have they tried anything bigger than a Photon...

Homework Statement The question is as follows, I'm truly stuck where to start here, any help would be much appreciated: A transparent paper of refractive index 1.45 and thickness 0.02mm is pasted on one of the slits of a double slit experiment. Monochromatic light of wavelength 620nm is...

How would the double slit experiment work if we were to use gravity as a detector? That is, a very localized but massive gravitational field near one of the slits. Since we are not observing when an electron passes through the slit, the interference pattern should remain. But on the...

from picture, If we put camera directly at screen and look back at slit. move camera around fringe A, B, C ... what we going to see? in bright fringe A, we should see light source through one of two slit, when in dark fringe, we should shadow between slit, and when in bright fringe B...

Is there any evidence that when the electrons pass through the single slit as a wave rather than a particle? Just curious because a single wave should provide the same Pattern as a particle.

I often read that electrons that pass through two small openings in a wall will land on a back screen and make a pattern as if the electron were a wave. But if we look at the electrons the distribution on the screen is as if the electrons are particles. What does it mean to "look at the...

well i am a starter in QM, i have 2 big doubts ! let me first tell what i understood , there is phsi which defines a state of a system, phsi times x is a position operator and phsi 's derivative of x multiplied by i h is its momentum operator ... well then i operator these in phsi and what do...

Homework Statement Two narrow slits are .6 mm apart. The dark fringe of order 1 is 1.7 degrees from the central bright fringe. What is the wavelength of the light? Homework Equations D sinθ = (m + 1/2)λ --> chosen because it was destructive m= order d= distance between slit The Attempt at...

Homework Statement Blue light of wavelength 400 nm passes through two slits which are a distance d = 1×10−4 m apart. This produces a double slit pattern on a screen L = 12 m away. (The screen is parallel to the plane of the two slits.) If the central bright fringe is denoted the “m=0...

Homework Statement See attached image Homework Equations y=L*tan(theta) m*(lambda)=d*sin(theta) The Attempt at a Solution Lambda = 640 nm = 6.4x10^-4 mm m*(lambda)=d*sin(theta) 1*(6.4x10^-4 mm) = (0.25 mm)*sin(theta) theta = 0.15 degrees y = L*tan(theta) This is...