Optics Definition and 999 Threads

Homework Statement A man stands 1.85m in front of a mirror hanging on a wall. His eyes are 10 cm below the top of his head. At what height from the floor, must the mirror be placed? Homework Equations Snells Law: n1*sin(omega)1=n2*sin(omega)2 The Attempt at a Solution I converted...

I have a Celestron NexStar 4SE, I damaged the optics. Is there a company who just sells the telescope without the computerized mount?

Homework Statement A concave mirror of focal length 30 cm is placed on the flat horizontal surface with its concave side up. Water with refractive index 1.33 is poured into the lens. Where should an object be placed if its image is to be captured on a screen with a magnification of 2. Ans...

Hello all, I've got an optics problem that I'm having some difficulty with, where I want to send a beam through a converging lens to obtain a certain image size. My incident profile is that of a ring with a certain thickness and use I use this as my object. I want an image of a certain size, so...

Homework Statement An object is located at a distance R from a sphere of radius R. The final image is formed at the same distance R on the other side of the sphere. Calculate the refractive index of the material of the sphere.Homework Equations Since we are dealing with refraction at spherical...

Homework Statement An object is placed at 25 cm to the left of a diverging lens. A converging lens with a focal length of 12 cm is located 30 cm to the right of the diverging lens. The two-lenses-system forms a real inverted image 17 cm to the right of the converging lens (see attachment)...

Homework Statement Had the same problem as this threadstarter: https://www.physicsforums.com/showthread.php?t=109059 Homework Equations The Attempt at a Solution I managed to find a ratio of tangents for the two angles. From there, it seems you're supposed to go "well tan(x)...

Hi all, This is probably a silly questions, but I want to be sure :). I'm wondering if a real image, created by a convex lens, can appear larger than the lens diameter itself. As an example, I'm thinking about the following: - I have a an object of height h_0=7.76" (display size of...

Trying to get my head around constructive/destructive interference in thin film optics. The book does a good job of throwing formulas at you but I want some intuition. If we shine a laser with λ = 600 nm on a thin film of a material with refractive index 1.5, at what thicknesses will we get...

I have a very strong interest in optics with biomedical applications, and I have been noticing this field growing over the last few years; however, the number of programs seem very limited. The big programs are University of Central Florida, University of Rochester, and University of Arizona. I...

Hi! I'm an Italian student. I I would like to became an experimental quantum optics. In particular I'm interested in Bose-Einstein condensate. I must decide where do my thesis. Can sameone help me? Thank you so much.

I was wondering if anyone could suggest a good quantum optics book. I know Quantum at the liboff text level. I am not sure if the wolf and born texts are too advanced for me, since I do not have the book, and it has a reputation for intense mathematical rigor. I appreciate the recommendations.

Homework Statement A 3 cm tall object is placed 11 m from a wall. If the image is to be projected upside down with a 20 cm focal lense, what is: A} The type of lens used? B] Where is the lens placed? C] What is the height of the image? D] What is the magnification of the...

Hello, If you have an object, and a bi-convex lense, you are given the focal length, and you are given the magnification factor (M) to be 2, how are there two possibilities to place the object? One question I was doing asked this, and said: a) if the image is virtual, and M=2, find the...

I am finishing a course on Eletromagnetism and Optics. I am currently a physics student in the second year of university. I passed the final exam and now I'm supposed to do a work on fiber optics. Do you know any interesting problem that i could adress? It can be a hard one, I am supposed to...

Hello, would someone know what is the smallest radius of curvature achievable with current gradient index optics (GRIN) technology? I mean, how much could one "curve" a ray of light? Many thanks! :smile:

So right now I am working on an amature astronomy project to develop a simple lab about the sun's declination. I am borrowing the cheapets linear polarized sheets that I could find ... Because they are least 10 - 15 years old, I would really like to clean them, but I don't know what to use...

Hello, I've been helping a graduate student out with his project which is planar laser-induced fluorescence. Part of the procedure involves generating a laser sheet with which to illuminate over the flame under study. Now, typically a usual procedure involves using a beam expander to...

Homework Statement Water level in the tank is decreasing at a constant rate of 1 cm/s. A small metal sphere is moving downwards with a constant velocity of 5cm/s. Base of the tank is a concave mirror of radius 40 cm. Find the velocity of the image seen (refractive index of water=4/3)...

Homework Statement A light ray parallel to the x-axis strikes the outer reflecting surface of a sphere at a point (2,2,0). Its center is at the point (0,0,-1). The unit vector along the direction of reflected ray is ##x\hat{i}+y\hat{j}+z\hat{k}##. Find the value of ##yz/x^2##. Homework...

Hello guys, First of all this is not a homework. I am preparing for my exams and this question was asked in my previous exams so I tried to solve this question myself, I have tried to solve this numerical by myself, but couldn't get the answers right. So, I am posting this question here, in...

I have been studying Fourier Optics and I have a basic conceptual question. I understand the mathematics of how to perform Fourier Transforms however the part of this topic I seem to have missed is why the action of a lens on light is the same as performing a Fourier Transform on the functional...

Homework Statement I'm riding my car. My eye is 40cm from the rearview mirror. I want to know if I can see the car behind me. The car behind me is 2.5m large. Can I entirely see the car behind me in his whole wideness? The mirror is 23 cm long. The car is 4 meters behind us. Homework...

Hello all, i have frustrating task in my lab... i have to generate a code in MATLAB that will get the focal length and the object distance from the lens, i.e image (1000X1000 pixels). transfer it through the lens and, for the output it should be the result of it...

This may sound really silly but yeah, a plane mirror, and a white sheet of paper, both reflect all the wavelengths of light incident on them. So Instead of a plane mirror, if I use a white sheet of paper, Why don't I see a reflection of myself? I have studied ray diagrams, and i know how an...

Searching for free Quantum Optic tutorials came up with the following. Any other suggestions? http://iftia9.univ.gda.pl/~sjk/QO-SK.pdf http://physics.stfx.ca/~pmarzlin/lectures/phys673-winter07/marzlin-phys673-2007.pdf http://www.st-andrews.ac.uk/~jmjk/keeling/teaching/quantum-optics.pdf...

Fresnel biprism sorry if this is the wrong place. Does anyone know a supplier for a Fresnel biprism with apex angle approx 168° should be reasonably small (approx 2cm x 2cm). Looked everywhere but no joy.

Homework Statement An object 20 cm. to the left of a converging lens with focal point 0.3 cm is moved to the left at a constant 5 cm/s. How fast is the image moving? Homework Equations v = vo + at 1/f = 1/u + 1/v The Attempt at a Solution Since there is no acceleration, I got 5 m/s...

"Quantum Optics," by Scully and Zubairy, attempts to explain the natural line width of an emitting atomic ensemble (in a resonant cavity with leakage) using random spontaneous emission events of the atoms (which in turn is due to interactions with the vacuum field). The basic idea and...

I was attempting to solve the following problem from IIT-JEE 1991 (actually I first found it on the book Solved problems in Physics) It asks for the image viewed by an observer at left. Ok, an observer at left would seen an image that passes through a spherical dioptre glass-air only...

Homework Statement We're working through the first Microwave Optics lab described in the following PASCO Scientific manual: intro.phys.psu.edu/class/p457/experiments/html/pasco_microwave_optics_WA-9314B.pdf We're using a slightly modified version of this setup, with a voltmeter hooked...

Homework Statement A polymer coating has a n=1.30 and a base of n=1.50. What is the minimum thickness of the coating to reflect 500 nm least strongly? Homework Equations The Attempt at a Solution

Homework Statement Doing some practice problems to prepare for upcoming exam and ran across this: A real image is a. One in which light does not pass through the image point but appears to diverge from that point b. One for which the magnification equal 1 c. An excellent image d. An...

I read in a book!If the electrons emit a light wave which is 90° out of phase with the light wave shaking them, it will cause the total light wave to travel more slowly. BUT I don't know why?anybody can help? Thank you!

Homework Statement A real object is placed 9.00 cm from a converging lens that has a focal length of 24.0 cm. The image is________. My classmate answered "14.4 cm from the lens, virtual, and enlarged," but apparently this is incorrect. I solved it out and chose the option "14.4 cm from the...

Homework Statement 1. A cylindrical tank 2.4 m deep is full to the brim with water. Sunlight first hits part of the tahnk bottom when the rising maes at 22o angle with the horizon. Find the tank's diameter 2. An aquarium is made from a thin-walled tube of transparent plastic 50 cm in...

Homework Statement With regard to Young’s Experiment, derive a general expression for the shift in the vertical position of the mth maximum as a result of placing a thin parallel sheet of glass of index n and thickness d directly over one of the slits. Identify your assumptions. Homework...

Hello. I know how to realize an homemade fiber optic using some food jelly. Are there other materials, at amateur grade; to replace jelly ? ( NB this item has to be used in high vacuum, and jelly is not convenient for this use)

I'm looking at concentrating light (e.g. sunlight) with a lens, and trying to figure out the maximum concentration I can get. If you have a perfectly collimated source, a lens can focus that light down to a point, but when the source has some divergence, the point you can focus down to will have...

Hello, here is something that's been bothering me for a while: say I have a charged particle beam that can be described by one bivariate Gaussian in X dimension and another bivariate Gaussian in Y dimension. The parameters of the bivariate gaussian are the position (X) of an individual...

Homework Statement When the striking ray is held perpendicular to the prism, there are four general configurations possible (in the attachment below). Use the figure on the next page to determine analytically which of these four configurations will result in total internal reflection of the...

Homework Statement Two flat slides of glass are separated at one edge by a thin wire, as shown below. The top surface of the upper slide and the bottom surface of the lower slide have special coatings on them so that they reflect no light. The system is illuminated with light of wavelength...

Homework Statement These are more-so explanation based and there is no math involved. 1) How come someone with "normal vision" does not require glasses? 2) Why does a far sighted person require glasses with a positive focal length? 3) Why does a near sighted person require glasses with a...

Homework Statement 1. An object is placed 1.5m in front of a convex lens of focal length 500mm. Find the position of the image formed and state its nature. 2. A second convex lens of focal length 25mm is placed 770mm behind the first convex lens. Find the position of the final image formed and...

My teacher said that instead of using a fiber optic made of just one material we could use a set of materials with progressively low refractive index to turn the light back in, like so: In the case of a continuous variation of refraction index, how can you do the math. Can you please show...

Hi Guys, I have a question about a telecentric lens I've been studying and was wondering if you guys could help clear some cobwebs in my head. For starters, I am simplifying the TC lens as a compound lens. Also, this lens has 2 degrees of freedom: (1) it can be extended and retracted (2) it...

I've searched the web for caustics and optics, but mostly see pictures of them. They seem to have some positive use. In some fashion they seem to magnify. They seem to be somehow related to critical curves, whatever they are. Both seem to be helpful in gravitational lensing. How?

Hi All, I need help determining focal length value in a two lens system. In the set up, the light source (object) is within a tube, a medium surrounds it with refractive index n1=1.52. The end of the tube is met with a curved convergent surface, the center of which is 0.635 cm away and focal...

Homework Statement An object is placed 400 mm in front of a convex lens of focal length 80 mm. Find the position of the image formed. State the nature of this image. A second convex lens of magnifying power X8 is placed 125 mm behind the first convex lens. What is the focal length of...

Homework Statement Using expansion of sin and cos functions, show that the resultant of adding the following two waves: a) E1 = E01*sin(wt-k(x+Δx)) b) E2 = E01*sin(wt-kx) Gives: E = 2E01*cos((1/2)kΔx)*sin[wt-k(x+Δx/2)] Homework Equations N/AThe Attempt at a Solution I don't know how to sum...