Double slit Definition and 802 Threads

Hi, I have a physics assignment which is asking me what the fringe pattern would look like if white light was passed through a double slit. Would it look like a single light which became gradually darker the further away it got from the central maximum? Thanks in advance Richard.

My apologies - you are all probably bored to death with these kind of naive questions - but I'd appreciate an answer if someone knows a definite answer. I'm thinking about the original double slit experiment - We fire one particle at a time at two slits and, as long as we don't detect which...

I am stuck on a question regarding Young's Double Slit Experiment. The two beams in Young's double slit experiment must (a) be parallel (b) have equal intensity (c) come from the same source (d) traverse equal distancesHere are my reasons for my answers. I may be misinterpreting certain parts...

While researching the double slit experiment and finding that even when only one photon is fired at a time and interference still occurs (so the photon must be traveling through both slits at once) i came up with a possible problem with the theory and wondered if anyone could help me see where...

Homework Statement I am taking Young's Double slit expariment setup, however now I am changing the polarization. Below is the typical intensity when both slits have the same polarization, what I need to know is how the intensity graph changes when there is a difference of 90º and 180º in the...

can u suggest a good site for studying young's double slit experiment involving interference of light coming from two coherent sources online?

Homework Statement A laser with wavelength d/8 is shining light on a double slit with slit separation d. This results in an interference pattern on a screen a distance L away from the slits. We wish to shine a second laser, with a different wavelength, through the same slits. What is the...

Hi there! I'm currently sat in the lab working on one of my uni assignments (I'm in my second year at Exeter, UK), and I'm getting results that I just don't understand, so thought that someone here might know what's going on! :smile: We're using a laser (through two lenses: I think one's...

A double-slit experiment is set up using a helium-neon laser (lambda =633nm) . Then a very thin piece of glass ( n=1.50 ) is placed over one of the slits. Afterward, the central point on the screen is occupied by what had been the m = 15.0 dark fringe. How thick is the glass? I really need...

An Alternative Model of the Double Slit Interference Experiment W.H. Madden November 20, 2007 ABSTRACT This post presents an alternative model of the double-slit interference (DSI) experiment. The model is based on a novel physical interpretation of the concept of the DeBroglie...

[SOLVED] Double slit equations In an experiment, blue light with a wavelength of 645 nm is shone through a double-slit and lands on a screen that is located 1.35 m from the slits. If the distance from the centre maximum to the 8th order bright fringe is 2.6 cm, calculate the distance between...

Q.Suppose that the the light rays in young's Double Slit experiment fall at an angle \theta=\sin^{-1}(\frac{\lambda}{2d}) .Then prove that the the Point P which is the symmetric point on screen between two slits is the centre of central minimum Necessary Formulaes for minima the waves...

i was going through the standard proof of Young's experiment using electric field concept .what the proof did is took two source S_{1} and S_{2} in the same line(asuuming such points do exist) and took a point P in the same plane as those points and found out the field at the point . 1.Was this...

Double split creates a wave interference pattern. Closing up one slit creates a particle like pattern (all hitting one spot). Does the closing up of one slit (allowing the particle to go through in only one narrow spot) measure its position (by the powers of Heisenburg Uncertainty Principle)...

hey during proof of expression of double slit interference at a point ,we take into account the interference due to 2 light rays emerging from 2 different slits. here why don't we account for the the interference also due to to light rays emerging from the same slit as in the single slit...

Homework Statement A laser with wavelength d/8 is shining light on a double slit with slit separation 0.500 rm mm. This results in an interference pattern on a screen a distance L away from the slits. We wish to shine a second laser, with a different wavelength, through the same slits...

hi all...it is said that constructive interference happens when the path difference is nlambda and i think wavelength,frequency and amplitude of light going through both slits is the same then why is the central maxima is the brightest spot? why the brightness decreases when n increases...

Hello. Just to set things straight this is my first post here and I am also a complete nube when it comes to things this confusing. I started reading a book called "the elegant universe" by Brian Greene. So far I think the book is great but I am stumped on one part of the book. Its the part when...

I have a simple question on double slit experiment, In double slit experiment, after the light rays pass through the slits, place two beam splitters (down converters) which split the light into two rays, one going towards the screen and other going orthogonal to it. Now my question is do we get...

Homework Statement From "http://physicsweb.org/articles/world/15/9/1": In 1909 Geoffrey Ingram (G I) Taylor conducted an experiment in which he showed that even the feeblest light source - equivalent to "a candle burning at a distance slightly exceeding a mile" - could lead to...

Hello, is it possible to reproduce the double slit experiment at home with some easily obtainable equipment? I was thinking of using one of those laser pointers. Though I'm not sure how to make the slits - would cutting a pair of close lines in a piece of plastic with a sharp knife be good...

I came upon a very interesting article today: http://www.msnbc.msn.com/id/19875410/site/newsweek/ I wanted to confirm what I read... this is the first time I ever heard of this kind of thing, and I was wondering if any of you have seen this before. It talks about a tweak of Young's...

when performing a double slit experiment using photons it is said that if you fire individual photons that over time as more photons are fired the interference pattern starts to appear. My question is how do they define a single photon? what is the method that they can fire one photon at a time...

Hi I don't know whether this is a homework-type question or not, so I am posting it here. In young's double slit experiment the interference pattern is found to have an intensity ratio between bright and dark fringes as 9. What does this imply: (Below are the options provided in the book...

I was watching a video about Quantum Mechanics and the double slit experiment which shows electrons to be both a wave and a particle, though not at the same time. I had learned this earlier in high school, though at that time did not understand the importance of this. Now I do and would like to...

http://video.google.com/videoplay?docid=-4237751840526284618 Something interesting i found, pretty much introduces Quantum Physics.

Hi, We all know that when we shoot electrons one by one on an apparatus having two slits then it forms a interference pattern. Means this implies that the electron passes through both the slits at the same time Now when we keep a detector near the slits to watch the...

I am doing a presentation for my high school physics class on light. I want to show the wave-particle duality of light, but first I want to show each separately. So I want to introduce Young's Double Slit Experiment to show the wave nature of light. The problem is... I apparently don't know...

If you take the normal double slit experiment but shine light on one of the slits so that it's possible to tell which slit each electron went through (by detecting scattered photons) then the "fringes" disappear amd you get constant light. If before the scattered photons hit the photon detector...

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...