Fringe Definition and 75 Threads

I'm doing some modeling of a bending magnet in FEMM, to use as a magnetic spectrometer, and came across the following equation: with the setup of the magnetic spectrometer similar to the following figure: At first I modeled a hard edge scenario in a 2D cross section, where no fringe fields had...

In Young's double split experiment, a narrow beam of light of wavelength ##589nm## passes through two slits to form an interference pattern on a screen which is a perpendicular distance of ##D## metres away from the slits. The slit separation is ##0.2mm## and the second bright fringe is ##6mm##...

In two different textbooks, there are two different formulas with different derivation styles for the "No Fringe Formation" Condition. In approach (a), they use an amalgamation of bright and dark for 2 wavelengths having very minute difference in the following manner: 2dcostheta=n*λ(1)...

Hi Pfs, I know that Young made his double slits experiment with sunlight and i would like to know the best value of the fringe visibility on the screen. The visibility is equal to (Imax - Imin)/(Imax + Imin) thanks

Firstly hello everyone and sorry for my broke english, Maybe you can remember there was some kind of sound device in the fringe. Peter Bishop designed and we've seen the observes use it too. This device was able to reconstruct a sound of past using traces left by sound's interaction with the...

i consider a pair of two level particles which can be up or down. this pair is described in the tensor product by the unitary vector (cos(\theta) (du + ud) + sin(\theta) (dd + u)) /\sqrt 2 i take its density matrix , trace it on one of the two particles and find the density matrix of each one...

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##...

Homework Statement: In the attached image. Homework Equations: formulas of fringe width and phase differences I think. It has been a long time since I have dealt with these kinds of interference/fringewidth problem, I can't figure out a way to start solving this problem. I was thinking about...

Brad Pitt, Steve Jobs' widow, and Britain's best-known fund manager reportedly invested in a fringe nuclear energy startup inexplicably valued at close to $1 billion. The Financial Times reported that the unlikely trio apparently saw potential in Industrial Heat, a North Carolina-based company...

A thin slice is cut out of a glass cylinder along a plane parallel to its axis. The slice is placed on a flat glass plate as shown in the figure. The observed interference fringes from this combination shall be ______. My thoughts The thin slice will act as thin film but of half cylindrical...

Homework Statement State a change to the separation of the fringe when a sheet of glass is placed in front of the bottom slit (this is a Double Slit Experiment). The light being passed is monochromatic red light. Homework Equations x = (landa)D / a The Attempt at a Solution After looking...

Homework Statement Light of wavelenghs 4.80x10^2 nm and 632nm passes through two slits 0.52 mm apart. How far apart are the second-order fringes on a screen 1.6m away? λ₁ = 4.80x10^2 nm = 4.80x10^-7m λ₂ = 6.32x10^-7m d = 0.52mm = 5.2x10^-4m n = 2 L = 1.6 Homework Equations (Maxima/Bright)...

Homework Statement a) Imagine that you are conducting an activity with a laser to create an interference pattern. Use the appropriate equations to predict two ways (other than the way described in the following example) to change the interference pattern in order to have closer fringes...

Homework Statement Homework EquationsThe Attempt at a Solution When the system is in air ## d \sin {\theta} = n \lambda ## ...(1) When the system is in water and slit separation is 2d, ## \mu 2d \sin {\theta} = n \lambda ## ...(2) ## \tan {\theta} = \frac y D ## ...( 3)...

Homework Statement The sodium D-lines are a pair of narrow, closely spaced, approximately equal intensity spectral lines with a mean wavelength of approximately 589 nm. A Michelson interferometer is set up to study the D-lines from a sodium lamp. High contrast fringes are seen for zero...

Homework Statement The Michelson interferometer in the figure below can be used to study properties of light emitted by distant sources A source ##S_1##, when at rest, is known to emit light at wavelength ##632.8~ \rm nm##. In this case, if the movable mirror is translated through a...

I'm a grad student working on a PhD in physics at an accredited university in the US. I have the opportunity this Summer of doing a side research project or two under the auspices of a physicist who works at a private research outfit funded by another physicist who was involved in "paranormal"...

Hey everybody, Homework Statement : [/B] I came across a question discussing Young's Double Slit interference and was wondering how come when we diffract white light through the slits it gives us a central antinodal fringe that is also white? The question itself came in parts firstly...

Homework Statement The distance between the 1st bright fringe and the 21st bright fringe in a Young's double-slit arrangement was found to be 2.7 mm. The slit separation was 1.0 mm and the distance from the slits to the plane of the fringes was 25 cm. What was the wavelength of the light...

We know that throughout history established ideas, that the people in their time had great confidence into be the final end all, often turned out to be incomplete or wrong. Ideas that challenged the status quo were often first met with great resistance and closed mindedness. This is...

Hello everyone, i am simulating a Michelson interferometer, where one mirror is slightly tilted, see picture.. This results in circular arcs / hyperbolic cross-section fringes. The center of these fringes depends on the focal length i am using, see picture. Is there an analytical expression for...

Hello everybody, I am working on a project that require to have map of an MRI machine fringe field in 3d space. I basic idea is to measur it in one plane parallel to radius of machine and then by assuming that field is axissymetric make my map. does anybody have any idea on doing that or on my work?

In finding the angle for the mth dark fringe of single slit diffraction using Huygen's principle, they usually split the slit into equal portions. For example, to find the first dark fringe the slit is split into two equal spacings and if the path difference between the edge and the middle point...

Homework Statement Two slits are separated by a distance of 4.40x10-6m and illuminated with two monochromatic light sources with wave lengths of 600nm (red) and 400nm (violet). The mr bright fringe of the red light coincides with the mv bright fringe of the violet light. What are the lowest...

Homework Statement A Michelson interferometer is illuminated with a laser with a wavelength of 514.5nm. A Haidinger fringe pattern is photographed with a lens of focal length 55mm. The diameter of the two adjacent circular fringes in the image are 1.53mm and 2.62mm. How far would the mirror...

Fringe spacing is the distance between two adjacent maxima or minima. For white light, is a maxima the distance from red to red (green to green, blue to blue..)? or the middle of the maxima to another middle of another maxima (i see that this distance will be the same since its middle to middle...

I am trying to figure out when electrons are subject to an Aharonov-Bohm apparatus (the pick up a phase of +/- e(magnetic_flux)/(h_bar), how the interference fringes are shifted. I know de Broglie wavelength is given by lambda = h/p and that the fringe spacing without the vector potential is...

Does anyone know of any research being done to control gravity and weather systems through computer science and directed programmatic control leveraging energy? There's a rumor on the 'internets' (as Bush would call it) that the senate recently discussed openly that HAARP and weather...

Homework Statement In a Young's double slit experiment , blue monochromatic light of wavelength 450nm is used to illuminate the slits which are 0.60mm apart. A screen is placed 1.5m form the slit is used to catch the interfrence pattern . If red light is used (700nm) , how many red light...

Homework Statement For parallel electrodes, is the average electric field in the fringe region smaller or larger than in the central region? Homework Equations E = ΔV/ΔX The Attempt at a Solution I know that the electric field strength is proportional to the density of the...

Homework Statement Show that the transformation w = e^{z} + z maps the infinite lines y = \pm\pi into semi-infinite lines u \leq u_{0}, v = \pm\pi. This is equivalent to transforming an infinite or edgeless parallel-plate capacitor (z-plane) into a parallel plate capacitor (w-plane). Sketch...

why unequal fringe width in Michelson interference pattern?

Why the central fringe in the double slit experiment is brighter than the others? I've tried but I still cannot undersand this. Can somone try to explain it to me. I don't know too much in modern physics, please be patient :) thanks for any help

I can vaguely remember a question i saw a few weeks ago, but it was multi choice and about identifying a hair follicle a circular aperture was used and dark fringe. It went like: A hair follicle was found at the scene of a crime where they used a circular aperture at distance of 1m and angle...

I would love to get my head around this; I did a quick search for this, but only came across one thread with fringe shift in the title (in the first 5 pages of the search results). The OP will probably sound like me "thinking out loud", because it largely will be. I'm not entirely sure of...

Homework Statement In a double slits experiment, the intensity at the central fringe is I. What will be the intensity at the central fringe when each slit is widened 2 times? Homework Equations The Attempt at a Solution My suggestion is that the intensity will be 2I...

Hi all Edit: The reflecting side is the right side of left slab Please look at the pic above ... The light from source splits at left slab and goes in 2 directions and come back to interfere. From figure, it is obvious that path diff. in slabs for both rays is 0 and only path diff...

I have a question. If you have two light beams of different frequencies, would you observe interference fringes?

To my understanding, The Big Bang Theory (BBT) is considered the standard, mainstream theory explaining the origin of the universe. I know that there are alternative theories, and my question is, how discredited, fringe, or false are these theories considered, if at all? Alternatively, how...

hey guys, i want to to know why the fringe width in young double slits experiment is λ thx

In the young experiment, why the first fringe is the biggest ang brightest one? I would desagree in both things, because a fringe would be bright if its amplitude were maximum, and ALL the constructive points have maximum amplitude, so wouldn't it be same bright...

Homework Statement Find the de Broglie wavelength for an electron with v=0.001c. Find the angular width of the central bright fringe in a double slit experiment, with the separation of the two slits d=50nm. Homework Equations wavelength = h/mv d sin(theta)=n*wavelength The...

So I was watching Fringe this morning and this came up. Then the character ominously solved it with a zero. I could solve the integral but there is a symbol that appears in the beginning that I am not familiar with. Plus, with the emphasis on him solving it with zero, maybe this is a famous...

hi all.. i facing problem to get a good contour..because the scale at fringe levels so big. for example: level 8 = 1.224e+037 level 9 = 6.122e+036 level 10 = 0 i have 4500 element that the value from 0 to 6.122e+37..so the result that i got all in blue color because have a big difference...

When Fizeau (and Michelson and Morley) measured the fringe shifts that occur when light travels through a moving medium, how exactly (in words) did they deduce the change in velocity? My understand is this: 1) Count the fringe shifts that occur. 2) Calculate what the frequency shift must have...

Homework Statement Hi. I'm attempting to find the fringe visibility of an interference pattern from a diffraction grating, using MATLAB. I have an image of this pattern, and have used the following code so far in MATLAB: myimage = imread('IMG_0166.JPG') image = rgb2gray(myimage); imshow(image)...

Homework Statement Hi Please, what fringe pattern would be obtained with a sodium vapour lamp? Homework Equations The Attempt at a Solution I am guessing that a dominant yellow colour would be obtained. The sodium is almost acting like a monochromatic light and therefore has a...

Homework Statement Hi It is I again! Can someone please tell me where I went wrong? My answer is all over the place! A narrow beam of light is directed normally at a single slit. The diffracted light forms a pattern on a white screen. A blue filter is placed in the path of the beam...

Homework Statement Hi A little help will be appreciated (a)Double slit interference fringes are observed using light of wavelength 590nm abd a pair of double slits of spcing o.50mm. The fringes are observed on a screen at a distance of 0.90m from the double slits. Calculate the...

Homework Statement Young's fringes, produced by monochromatic laser light passing through slits 0.60mm apart, are viewed on a screen. The distance accrose 20 fringe spacings on the screen is 58mm. When the screen is moved 0.80m away from the slits, the distance across 20 fringe spacings...