What is Young's double slit: Definition and 110 Discussions
Young's interference experiment, also called Young's double-slit interferometer, was the original version of the modern double-slit experiment, performed at the beginning of the nineteenth century by Thomas Young. This experiment played a major role in the general acceptance of the wave theory of light. In Young's own judgement, this was the most important of his many achievements.
Let O be where pairs of EPR particles are emitted to Alice on the righr and Bob on the left. the pairs have a constant total energy, a null total momentun and a null total angular momentum.
Alice at a distance D on the right of O have a Young double slits device with a screen at D+ L . Bob has...
I think that it is harder to describe the two slits Young experiment in terms of hamiltonian because the particle has a constraint: to pass through the slits. is it possible?
thanks.
Since slit-2 = 4 × (slit-1)
Hence amplitude, a2 = 4a1
which gives i2 = 16×i1
So i(max) = i2 + i1 = 16i1 + i1 = 17i1
& i(min) = i2 - i1 = 16i1 - i1 = 15i1
=> i(min) /i(max) = 15/17
but there's no such option.
Kindly help me to figure out where am I doing error.
Hello, I have a question about the blue waves coming from sources S1 and S2 in de next picture.
The blue waves from sources S1 and S2, are those two resulting waves (interference of all wavelets, Huygens Principle) or are those blue waves two wavelets?
Hello guys i have one problem and i can't find right solution. In some notebooks for destructive interference it says Δx=(2k+1)*λ/2, and it doesn't make sense for me because if i insert k=1 it will be 3λ/2 and it should be λ/2. And also for light diffraction d/2sinθ =λ/2, this one is correct...
So the angular position for constructive fringes is
d \sin \theta = m \lambda = (2m) \frac{\lambda}{2}, \qquad m=0, \pm 1, \pm 2, \ldots
whereas for destructive fringes we have
d \sin \theta = m \lambda = (2m+1) \frac{\lambda}{2}, \qquad m=0, \pm 1, \pm 2, \ldots
I can see that ##m##...
I know that ydse is based on interference of light when it passes through an obstacle having almost same aperture as the wavelength of light. Also they should be coherent to have a constant phase difference at every point. But I don't get why the light beams should be parallel?
im assuming the double slit can also be used in the diffraction grating equation. Would the number of lines per meter aka the d value be 1/2 for example in this case also? If both were in one meter.
In most textbook/internet explanation of light coherence, it gives two conditions
1) monochromatic light, same frequency.
2) light in phase or constant phase difference.
Only with the two conditions can light interference pattern be observed in the double slit experiment.
But this cannot be...
i would like to find the detailed calculation in the case of a two slits experiment with an excited atom.
i only found the formulas when it decays near the slits.
have you links?
thanks
Homework Statement
If a green laser is (wavelength = 532nm) sent through two slits with a separation of 127 um, how wide (in total) would the 11 green dots formed be if they were projected onto a screen 1.25m away from the slits?
Refer to this diagram sorry for bad quality...
Hi all!
In Young's double slit experiment, there are two things I cannot explain. Any help is appreciated!
The first one is why the bright fringes get dimmer as you get further from the central/brightest spot. My theory, after looking in the two books I have, is that each single slit decreases...
Homework Statement
For accurate measurement of the fringe separation, a small as possible slit separation should be used. Homework Equations
s=λD/d
The Attempt at a Solution
Why is this statement correct ?
Hi all
I was wondering what happens if one slit in youngs double slit is bigger than the other?
I recon that the of maxima will rise and in minima, there will be no dark spot, but dim light instead. Is that correct? If not can you please explain what happens?
Thanks
What would happen if a youngs double slit experiment is done with different slit sizes? I get the feeling that the intensity might never be zero as the waves might never cancel out completely. Am I right? How should I analyse the Intensity?
Would I have to do something like what is done while...
Homework Statement
a) Explain why a pattern of bright and dark fringes visible on a screen when a light is shone through a double slit.
b) Upon using Thomas Young's double-slit experiment to obtain measurements, the following data were obtained. use this data to determine the wavelength of...
1. The problem statement, all variables and given/known da
Homework Equations
Interference minima is asinΘ=nλ/2 where n=1,3,5,7...
[/B]The Attempt at a Solution
Putting ab/(2sqrt(b^2/4+d^2))=λ/2 for first order minima
And solving for d I get (b/2)*sqrt((2a/λ)^2-1) in which only the 2 factor...
Homework Statement
From a procedure standpoint, our experiment consisted of a laser pointer on a retort stand with a holder, shining through a piece of sheet with slit measurements (I believe it's acetate) and measuring the height of the maxima on a whiteboard. What could be improved with this...
From a procedure standpoint, our experiment consisted of a laser pointer on a retort stand with a holder, shining through a piece of sheet with slit measurements (I believe it's acetate) and measuring the height of the maxima on a whiteboard. What could be improved with this experiment?
I understand Young's Double Slit Experiment, which basically consists of pointing a laser through two slits and seeing the maxima with different brightness, caused by constructive and destructive interference respectively. Through the experiment, I know that increasing the distance between the...
In Young's double slit formula, the equation is
d sin \theta = m \lambda
Which means that
sin \theta = m \lambda / d
But, what if d < \lamda so the sine value becomes greater than 1?
Will there be any interference?
Homework Statement
I am having troubles trying to figure out systematic and random errors when conducting Young's double slit experiment.
Homework Equations
NA
The Attempt at a Solution
I have found one error which could be correct, it is the fact that the laser was not at right angles with...
Homework Statement
Here i am asked to find the phase difference.
Homework EquationsThe Attempt at a Solution
I know that usually the equation is mλ=asinΘ
Homework Statement
Hi,
For the Young double slit experiment, say I have a plane wavefront approaching the double slit; now, if I halve the width of one of my slits, will the amplitude of the light exiting that slit be halved as well?
Homework Equations
None directly relevant I know of, but...
1. The statement, all variables and given/known data
Hi I'm doing this experiment where we need to find the wavelength of our laser light source. I am unsure what the variables IV and DV would be and the controlled variables? Also how will I make the graph? I'm in AS level so please don't make...
Homework Statement
A point light source is used in a Double Slit experiment. The light source contains two wavelengths(500nm and 600nm).
Separation of the two slits d=1mm. Two sets of interference fringes are formed on a screen. Find the angles θ where bright fringes are formed for both the...
Homework Statement
In a double slit experiment, the distance between the slits is 0.2mm and the distance to the screen is 150cm. What is the phase difference in degrees, between the waves from the two slits arriving at point P, when the angular distance of P is 10 degrees relative to the...
Homework Statement
Light of a wavelength 548nm illuminates two slits separated by 0.25mm. At what angle would one find the phase difference between the waves from two slits to be 2 rads?
Homework Equations
σ / λ = ΔΦ / 2π
σ: path difference
λ: wavelength
Δφ: phase difference
The Attempt at a...
Homework Statement
Having recently completed an experiment on Young's double slit experiment for both high and low intensity light; I am having trouble writing conclusions in the report. In one part of the experiment I know I was firing only one photon at a time down the tube, and I achieved an...
When the slits are made narrower (but with same separation) why are more fringes produced? If the slits are narrower, less light enters, so less light interferes with each other, so lesser number of fringes should be produced, isn't it?
Homework Statement
In a Young's double slits experiment, a monochromatic light source of wavelength 700nm is used and the separation of the slits is 0.1mm. If 15 bright fringes are observed, what is the angle subtended by those fringes at the centre of the double slit?
A. 6.0°
B. 5.6°
C. 5.2°...
Homework Statement
A sheet of mica ( approximate 6-7 µm) covers one slit
of a double-slit apparatus and has a n= 1.582. There is a central maximum of 539 nm. What is the exact thickness of the sheet of mica?
Homework EquationsThe Attempt at a Solution
I think you can solve this with the...
Homework Statement
A quasi-monochromatic beam of light illuminates Young's double-slit setup, generating a fringe pattern having 5.6-mm separation between consecutive dark bands. The distance between the place containing the apertures and the plane of observation is 7 m, and the two slits are...
What is the effect on the interference fringes in Young's Double slit experiment when the source slit is moved closer to the double slit plane?
I have seen you people @DrChinese , @Cthugha , @bhobba helping in these kind of topic before.
Can you help here?
It would be great if others also can help.
Homework Statement
antennas can both receive and emit electromagnetic radiation depending on wetter their connecting cicuit is monitored for, or driven by a current. the pattern of emitted radiation is identical to the pattern for absorbed incident radiation.
As shown in the notes, far-field...
Homework Statement
Young's double slit experiment
'd' - Separation between the two slits
'D' - Separation between the double slit and the screen
'S' - Source (Primary) (It is coherent)
S1, S2 - Secondary sources
Δx - Path difference between the two rays coming out from S1 and S2
Δx° - Path...
Homework Statement
In a Younf's double slit experiment , the intensity of light at the centre of fringe pattern is I. If one of the two identical slit is now covered , the intensity at the cnetre ANS is 0.25I.
Homework Equations
The Attempt at a Solution
In my opinion, it should...
Homework Statement
In a Young’s double-slit experiment using light of wavelength
λ, a thin piece of Plexiglas having index of refraction
n covers one of the slits. If the center point on the
screen is a dark spot instead of a bright spot, what is the
minimum thickness of the Plexiglas...
Homework Statement
Two radio antennas separated by d = 294 m as shown in the figure below simultaneously broadcast identical signals at the same wavelength. A car travels due north along a straight line at position x = 1 290 m from the center point between the antennas, and its radio...
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...
Hello,
I have a quick question about the distinguishing features between a 'monochromatic light source' and a laser.
In my notes on wave optics, I have a diagram of monochromatic light being diffracted through a single slit, to produce a coherent wave formation that then hits a double slit...
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...
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...
Homework Statement
In a young's double slit experiment the slits have the same width and are separated by a distance a. an observation screen is placed at a distance L=1m from the slits at a point on the screen a distance y from the optical axis the optical path difference between the 2 waves...
Hi Everyone
I was trying to do a young's double slit experiment with green laser.
The gap between the slits was d = 0.001m
The distance to the screen was D =1.2m
We counted from the center 10 bright fringes m = 10
The distance of the from the center bright fringe was y = 0.067...
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...
Hello all,
I was looking through my textbook on the double slit and it talks about constructive interference occurring at path differences of m \lambda and destructive interference occurring at path differences of (m + 1/2) \lambda where m is an integer. This is obvious if the waves leave the 2...
Why did Young specifically perform a double-slit experiment to demonstrate the wave nature of light, since light will diffract and interfere even through a single slit? Is there something special demonstrated by the double-slit experiment that's not demonstrated by a single-slit experiment...