Double-slit Definition and 185 Threads

Hi. I've just started learning about quantum mechanics, and I find the whole subject very interesting. I have read about the double-slit experiment, and I didn't understand a couple of things. Assuming one were to fire one particle at a time at the diffraction slit: - will all particles pass...

http://arxiv.org/abs/0809.0616"

Hi, I have problem with electron interference in double-slit experiment.Does the electron pass two slit at the same time or physicist just try to justify the electron's behavior by using wave matter? Is anyone help me? Of course,My backgroud is that I'm under graduated in physics. thanks

Homework Statement Two shortwave radio antennas broadcast identical, in-phase signals at the same frequency. The transmitters are 176.0 m north, and 176.0 m south of Western Ave, respectively, as shown (that is, they are separated by 352.0 m). Western Ave is 452.0 m long. Starting at the end...

I tried to make a double-slit experiment, but I got some difficult-to-explain results. I cut a piece of opaque plastic in two and then stuck it back together with a human hair (mine) stretched in between, thus forming a double slit. I then mounted the "double slit" 1m from a sheet of white...

Hi everyone, Thanks in advance for any insights you might be able to lead me to. The photoelectric effect is a well known phenomenon where an incident photon of some energy can stimulate the emission of an electron when absorbed, so long as the energy of the photon can promote an electron...

Homework Statement a) What are the factors that contribute to the error in the measurement of the wavelength of laser light? b) Are there methods you might use to reduce the error, given that the wavelength of the laser light is known to at at least four significant digits? The Attempt...

Both uncertainty principle and double-slit interference are the most important contents in Quantum mechanics. Those days I am thinking about this question: Is there a hidden relation between them? Unfortunately, I couldn't give me a satisfied answer. How do you think about it? Thank you!

Hello, I am new in this forum and I am not a scientist Can someone help me to understand the following question: does this String theory confute and negate the Observer Effect and that there is a subjective reality? Or it confirms it Thank you so much Rossella

Hi there, Let me start by introducing myself. I am a student who considers himself to be a very scientific thinker, that is to say, not one who believes in mystical thinking, but I am not studying physics. I am trying to learn more about this for my own edification (and I will try to be a...

A variation of the double-slit experiment--myth or did somone really do it? I've heard this experiment described at least three times; possibly more. However, none of the sources are terribly reliable--Scott Adams in the last chapter of The Dilbert Future (and he freely admits that he gets a...

The question goes like this, From the 2-slit interference experiment, determine the position of the 1st maximum if lambda=400nm, d=1mm and D=10cm. I've been reading through the experiment through external sites and none had given an example near the question. The question is, should i use...

Homework Statement Youngs double-slit experiment is performed with 589nm light and a distance of 2.00m between the slits and the screen. The tenth interference minimum is observed 7.26mm from the central maximum. Determine the spacing on the slits.Homework Equations Iavg = (Imax) cos^2 [(pi d...

I am asked to show that it would be impossible to determine exactly which slit a single photon of light passed through in a double slit diffraction grating without destroying the resulting interference pattern since in order to do so, we would need to know both the momentum and position of the...

[SIZE="1"]I'm not sure if "Quantum Physics" (or "Beyond the Standard Model") is the appropriate place for this question. Please move if necessary. What does "Quaternion Quantum Mechanics" say about the famous double-slit experiment? Does it make the same quantitative prediction as standard...

I am planning to recreate the Double-Slit experiment for my senior project (in HS) and I've tried searching many sites on how to go about doing this but I couldn't find anything relevant. Does anyone know a site (or book) that would tell me the materials I need to make the experiment and how...

Question: Coherent light with wavelength 400 nm passes through two very narrow slits that are separated by 0.200 mm and the interference pattern is observed on a screen 4.00 m from the slits. A What is the width (in mm) of the central interference maximum? y_m = R \cdot \frac{m \cdot...

Ok, I have a handful of questions: 1. Particles A and B are entangled, measuring A colapses the wave function of B, right? 2. The double-slit experiment produces different outcome based on whether or not a particle has been measured, right?

I'm in physics I and only in Trig for the first time this year (Jr in HS). I do not remember sin (2 theta) in any previous lessons. I need in help in the following problem using it. In a double-slit experiment with monochromatic light and a screen at a distance of 1.50 , the angle...

I'm having problems with the following problem: A rock concert is being held in an open field. Two loudspeakers are separated by 9.00 m. As an aid in arranging the seating, a test is conducted in which both speakers vibrate in phase and produce an 80.0 Hz bass tone simultaneously. The speed...

Consider the double-slit experiment with electrons. It is so, that observing trough which split the electron goes will destroy the interference pattern. This can be seen in a thought experiment in which one adds a light source near the splits. One can calculate that as soon as the...

What will we see on the screen in double-slit experiment if I use two radiation have wavelength l_1 and l_2 . I know there will be two systems of interference fringe, call I and II. But what if one light region of I is coincident one dark region of II ? And then how many light regions do we...

Light Waves & Double-Slit Experiment Question... Our professor gave us an extra credit question on our last quiz & every single student got it wrong, all 150 of us! Anyways, here is the question, if you know the answer that would be greatly appreciated. Here is the question: Describe in as...

I am asked to construct a double-slit experiment for 5eV electrons. The first minimum of the diffraction pattern needs to occur at 5 degrees, what must the separation of slits be? I'm guessing that I should use Bragg's law but I don't know how to calcualte a minumum because bragg's law is for...

I found some very entertaining presentations of the Double-Slit Experiments at ... http://www.colorado.edu/physics/2000/schroedinger/index.html ... and it made me start thinking. The "professor" presents an example of someone shooting a machine gun through the two slits and the "student" asks...

Central to the mystery of the quantum world are the ramifications of the famed 'double-slit experiment', in which the same electron, it turns out, can be in two places at the same time. Alot of the 'strangeness', mysteriousness etc stems from this experiment, for as Feynman put it in the...

Hello. I just have some questions about Young's Double-Slit experiment and light wave interference. I think i got the right answers, but i just want to know if i grasped the concept correctly. 1-If we perform young's double slit experiment under water, how would the interference pattern be...

Hi all, I am not educated in physics but truly need someone who greatly understands Young's Double-Slit Experiment to contact me directly at cteditions@aol.com. I need to figure out what size slits (and distances between slits) I need for a particular setup with a 4X5 camera. If I know the...

1.)I'm wondering to what extent Young's and other double-slit experiments depend on "slit" geometry. Does the same effect show up with two pinholes? I read a brief mention of G.I. Taylor having used a pinpoint somehow, but the description wasn't expanded enough for me to understand the set up...

I have some questions about the so-called double-slit experiment which exploits the wave-like characteristics of light. 1) why are the interference patterns two-dimensional? i.e. they are always vertical bands... 2) does the pattern change if the slits are vertically arranged instead of...

Hi All, I am trying to get a interference pattern from normal daylight and was wonder if I used a VERY FINE pinhole (micron sizes) to concentrate the light into some coherence and THEN have the double-slit plate behind the pinhole plate if this would work. How do I calculate the...

Double-Slit with Natural Light? Hi, I would like to know if it is possible to perform the double-slit experiment with natural lighting conditions. I work with photograhy and would like to know if there is a way to capture the "interference patter" of a particular scene (i.e. ocean...

Two slits are separated by 0.180 mm. An interference pattern is formed on a screen 80.0 cm away by 656.3-nm light. Calculate the fraction of the maximum intensity 0.600 cm above the central maximum I was using the equation I=Imaxcos^2(pie(d)sintheta/wavelength and I don't seem to be...

Gerhard Paulus of Texas A&M University and co-workers in Berlin have developed a new look for Young's double-slit experiment. Interference pattern has been observed with electrons that pass through a double slit in time, not space, as a result of being ejected from an atom at one of two possible...

having problems trying to understand and derive the equation for intensity in the double-slit interference pattern. any sort of help would be welcomed. thanks