Double slit Definition and 825 Threads

It is said that even if we were to send single electrons through a double slit or a single slit we would see an interference pattern on the screen (as long as we don't setup a detector to tell us which path the electron took). How do you send SINGLE electrons into a slit? There are electrons...

so - i understand the basic double slit experiment - and like any sane person, am having a hard time understanding the electron-at-a-time outcome. but i have some questions... 1) why do we assume that an electron is a single "object" or whatever that would pass through one or the other slit...

Homework Statement 500 nm light passes through 2 slits. Nodal lines are produced 3.0 m away. the distance from the 1st to 10th nodal line is 5.0cm. what is the slit separation?Homework Equations What equation do i use here? is it this...

Hi, I would like to know what would happen if we altered one of the slits by making it into a very very long tunnel (an optical cable that would run for a significant distance, but would come out on the other side of the screen almost in the same spot of its beginning). Would this destroy...

I Have two questions in my mind about the double slit experiment about the electrons, i would be glad if you guys could clear it up. 1)When we try to observe which slit the electron is going through, how exactly do we go about making the measurement? what kind of "device" or "technique" do we...

Homework Statement in a double-slit experiment, blue light of wavelength 4.60*10^2 nm gives a second order maximum or CI at a certain location P on the screen. what wavelength of visible light would have a minimum or DI at P? Homework Equations x=(l*lamda)/separation The Attempt at...

Some homework q's i don't quite understand. Any help is appreciated. A double slit arrangement produces fringes on a distant screen. Using the light from a sodium spectral lamp (lamda = 589 nm) the fringes have an angular separation of 0.015 degrees. a) What is the separation of the slits...

Hello Physics Forums Gurus! I am wondering if it would be possible to set up a double slit interference pattern for light at home? Well, I know its possible... but I am just an uneducated student. What kind of dimensions would I need for the slits? I think I would need the light to hit...

Hello everyone. Very nice forum you have here. I came here to ask if someone can give me a few pointers on Physics. I am totally lost here. I found this page http://www.ictshirts.com/t-shirt/122/quantum-physics-electron-double-slit.htm and they talk about electrons, double slit, interface...

Homework Statement A very thin sheet of plastic (n = 1.45) covers one slit of a double-slit apparatus illuminated by 570 nm light. The center point on the screen, instead of being a maximum, is dark. What is the (minimum) thickness of the plastic? Homework Equations Constructive...

Homework Statement A double slit is illuminated simultaneously with orange light of wavelength 600nm and light of an unknown wavelength. the m=4 bright fringe of the unknown wavelength overlaps the m=3 bright orange fringe. What is the unknown wavelength? Homework Equations dsin(theta)...

Yep I have seen that movie! :) Ok I am crazy enough to explain, “how Q.M. actually works”. Let's start with simple explanation of wave-particle duality, which actually states that the light has a dual nature: It exhibits both wave and particle characteristics (& that is a FACT). In early 20th...

Double Slit For those who appreciate this experiment for being the simplest demonstration of the essence of quantum mechanics, I would like to throw a modification into the scheme that I haven’t seen before. I don’t know the answer to this or how to approach explaining it, in terms of...

A monochromatic, coherent light source is targetted through a pair of double slits, and produces a series of small dots on a background screen. According to Young, this is caused by the interference of light wave trains, constructively and destructively interfering to produce antinodes and nodes...

Homework Statement # It is given in my book that if white light is used instead of monochromatic light, the central fringe will be white while there will be coloured fringes on either side of the central fringe. Could anyone please tell me the reason for this? Is it because, due to...

-------------------------------------------------------------------------------- (a) A double-slit experiment is set up using red light (l = 708 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 380 nm and 750 nm) would produce a...

Hello! I am stuck on a problem that seems so easy. The question is: Two slits are 0.143 mm apart. A mixture of red light (wavelength = 665 nm) and yellow-green light (wavelength = 565 nm) falls on the slits. A flat observation screen is located 2.29 m away. What is the distance on the...

If an electron moves through a double slit without being subjected to any measurement device it will act as a wave and cause interference patterns on a screen. If the electron it measured before or after the slits it will act as a particle and no interference patterns will be be seen on the...

Hi; I'm new to the forum and I hope my question is not out of line. Has anyone ever done double slit experiments with macroscopic objects such as grains of sand, for instance. It seems to me that with appropriately sized and spaced slits in a mask of appropriate thickness, one should be able...

In a Young's double-slit experiment, the seventh dark fringe is located 0.023 m to the side of the central bright finge on a flat screen, which is 1.1 m away from the slits. The separation between the slits is 1.5 10-4 m. What is the wavelength of the light being used? m I'm having some...

Hi, I've done a few terms worth of quantum mechanics, which was good on explaining the mathematics, but not good at explaining it's "derivation". I've been reading the Feynman lectures, and I've learned a hell of a lot. It does seem though, the more I learn, the less I understand . But it's...

I've been working on my Physics work when I scanned across a section and noticed something that bothered me. The equation: d sin (thetha) = m (wavelength). d is the separation and m is an interger. However, it said to find the bright fringes of a double slit (Young's Double Slit...

I have a question that's been buggin me as I've built an interest in what kind of part does consciousness play in quantum mechanics. My question is if anyone has conducted the Double slit experiment, in a way that the measuring device(s) at the slits (that determine which slit it goes...

Hello all, I have a problem that requires some knowledge about Young's double slit experiment. The question is as follows: Imagine performing Young's experiment with one slit wider than the other so that the intensity passing the wider slit is four times as great as that passing the narrower...

Hello Could someone please help me with this question,,I have no idea how to work it out and have looked through my textbook/notes and arrrr still can't do it... A beam of photons encounters a double slit that has a separation distance d = 34.0 μm. Note: the diagram is not drawn to...

I'm only a first year psychology student, so I appologize for my lack of understanding. But looking at the double slit expirament described in Feynmans book QED, for example, where two slits separate a photon emitter and detector, where the separation distance of the slits determines how many...

As I understand this, if the double slit experiment is performed in a cloud chamber the interference pattern of the electrons disappear and tracks are seen within the vapour. Does the interference pattern disappear because by the process of observation (permitted by the cloud chamber) we have...

My question deals with Young's double slit experiment. This figure is a graphical representation of Young’s double slit experiment in which laser light passing through a pair of closely spaced slits results in a 2-source interference pattern. The laser light, incident from the top, is...

I have an advanced amateur's(if there is such a thing) grasp of the concepts of quantum physics. However, the typical usage of the 'double slit experiment' to explain an observation of the differences between classical and quantum behaviours confuses me. The specific case, of course, is when...

what are the practical and theoretical no. of bright fringes that can be formed in the double slit experiment?

Hi... Could anyone please tell me that why does the intensity of the interference pattern get diminished towards the ends of the screen ? And can anyone also tell me what is the theoretical number of maxima that can be obtained in YDS experiment for a given wavelength, and slit , screen...

Hi, Could somebody, please, give a reference for the exact derivation of the single-photon double-slit experiment? I mean similar then the well-known solution for the particle-in-box, or for the Hydrogen-atom. That is, starting from the Schrödinger-equation, taking boundary conditions...

Hi! :smile: I’m new here and enjoying it very much. In the double slit experiment; what causes the fired electron to change from being in a wave configuration, back to a particle configuration when it strikes the target? Mizpah

I stumbled upon this, basically what i want to know is. Does a single electron shot through two slots produce an interference pattern? When you observe which slot the electron goes through does the act of observing prevent it from producing an interference pattern?

Light of wavelength 600nm passes through two slits separated by .2mm and is observed on a screen 1.0m behind the slits. The location of the central max is marked on the screen and labeled y_0 A) at what distance are the m = 1 bright fringes. I got this part. the answer is .003m or 3mm...

Basically I'm looking to find a mathematical treatment of the single electron double slit interference phenomenom,, presumably someone has already done the maths for it but I can't seem to find it,, can you point me to an article, paper or book which has it? [preferably online] Thanks a lot =)

Question: Calculate the longest wavelength of light falling on double slits separated by 1200nm for which there is a first-order maximum. In what part of the spectrum is the light? Answer in Book: 12nm my problem: the formula i thought you would use is...

here the problem: In the Young Double Slit experiment, alternatingbands of bright and dark regions are produced on the screen. At the dark band shown in the picture below, on slit is a closer than the other slit: In other words, D1 is less than D2, Find D2-D1, Assuming that the light has a...

hello, i am doing a work sheet on the title of this thread and i do not have the answer sheet for the questions so can some one please go through my answers and see if i am correct Young used a monochromatic light source a) wat does this mean? my ans: light of a single wavelength b)...

A vertical screen has two narrow slits separated by distance d. A second screen, parallel to the first, is a distance L away (L>>d) and displays the first minimum of the two slit interference pattern a height h above the horizontal line drawn from the center of the slits to the second...

From what I know of the double slit experiment you shine a light at two different slits and half of the photons go through one, and the other half go through the other (or a ratio similar to that), and i am pretty sure the second part of the experiment is to shoot one photon at the two slits and...

For the Young's Double slit Experiment, I'm just wondering when it comes to finding the distance between the adjacent fringes (shown on the screen), why can't we just measure directly the distance between the adjacent fringes instead of having to measure the distance between 5 fringes and...

I have read that if you set up a double slit experiment and let photons go through one at a time they build up an interference pattern. I have also read that this interference pattern is similar to having a pool with two wave generators on one side of the double slit and looking at the...

How will the Fringe system in a Young's double slit experiment affected if, 1] a pair of polarising sheets P1 and P2, one before each of the slits S1 and S2, such that their transmission directions are parallel. 2] what will be the effect if the transmission lines are mutually orthogonal...

Double slit in time experiment. http://faculty.physics.tamu.edu/ggp/#doubleSlit http://physicsweb.org/articles/news/9/3/1/1?rss=2.03Cbr20/E This surely is experimental evidence that that matter/energy is not just quantised over spatial dimensions (as shown by the classical double slit...

I have seen this experiment done with a laser, but I want to know how hard it is to do the version of the experiment where only a single particle is fired toward the slits at a time. Is it possible for me to carry out such an experiment, or does such a thing require lots of cash? Also, from...

Consider the double-slit arrangement shown in the figure below, where the separation d is 0.305 mm and the distance L is 1.10 m. A sheet of transparent plastic (n = 1.50) 0.0491 mm thick (about the thickness of a piece of paper) is placed over the upper slit. As a result, the central maximum of...

Hey guys, I was reading, as you do, a bit of physics on the classic double slit experiment - this was a simple example that was in the article, however it got me thinking. I remember reading about some physicsts performing the experiment with electrons. now I also think I remember that...

ok so I read this book recently, timeline. In it they explain an experiment I've heard about a lot in physics. However, they gave a very strange look at it that I can't figure out. Basically, its the double slit experiment except instead of using light waves / many photons, you use particles...

Two lasers are shining on a double slit, with slit separation d. Laser one has a wavelength of d/20, while laser two has a wavelength of d/15 . The lasers produce separate interference patterns on a screen a large distance L away from the slits. Which laser has its first maximum closer to the...