Optics Definition and 999 Threads

Hi guys, I am interested in designing a chamber that is either purged with nitrogen gas or vacuum sealed that encloses a thin film sample. The method of analysis is via ellipsometry. (My knowledge of optics is extremely limited but know that ellipsometry measures some shift in polarization...

Hi, I'm student of physics, i want to specialize in the areas of optics, quantum mechanics or plasma, but i want give an approach computational physics, therefore, my question is, which programing language is advisable for these areas of physics?. The options that most i read were fortran, C...

Hello all, I'm having trouble understanding the human eye and what the focal length has to do with where light converges. Why do we need a longer focal length to see distant objects and shorter to see near objects? Thank you

1. 1. Homework Statement (SEE PIC given BELOW) A pencil is standing upright in front of a mirror at a distance of 20 cm from the surface. A variety of mirrors can be placed where the dotted box is located. The mirror may be either concave, flat or convex, based upon the following questions...

I am trying to teach myself optics out of the text by Sears, with some looks at Optics and Vision and a few other texts. I'm trying all the problems in Sears, and the answers to the odd problems are in the back. Unfortunately, I am getting a good fraction of the problems wrong. Sometimes it...

Dear All, I am looking for a good software for drawing optics scheme(see examples below). I am wondering whether there is a software specially designed for this purpose. Whole my academic life, I was drawing optics schemes in Microsoft Word, Powerpoint and Coral Draw. Examples:

Homework Statement A radio-wave transmitter and a receiver, separated by a distance d = 50.0m, are both h = 35.0m above the ground. The receiver can receive signals directly from the transmitter and indirectly from signals that reflect from the ground. Assume the ground is level between the...

Homework Statement From Optics by Frances Sears, 1949, Chapter 6, Problem 11: (I've been working all the problems in the book on my own.) A crude telescope is constructed of to spectacle lenses of focal lengths 100cm and 20cm respectively. (a) Find its angular magnification. (b) Find the...

I recently got interested in some aspects of quantum optics and have a basic question. There is an uncertainty relation concerning the phase and the particle number of a mode. How is this phase observable defined? Where can I read about such basic concepts without dwelling deeply into higher...

Why is the parabola the most bent, concave, effective mirror? What are some properties of a third order mirror (absolute value of x^3)? There is no uniform focal point. Shouldn't shining a light beam along a normal to the x-axis reflect off of the function multiple times? Then take this to the...

I was wondering if there was any particular difficulty in going from a Physics undergraduate program to graduate program in Optics/Photonics. Let's say to an Optics college such as the one at UCF (http://www.creol.ucf.edu/) I still have my upper level Physics classes to take so is there any...

Homework Statement A diffraction grating is placed 0.50 m from a screen. The diffraction grating is marked 750 lines/mm. Find the distance between the second order maximum and the first order maximum when light of wavelength 550 nm is passed through the slits. Homework Equations...

Homework Statement 33. This experiment projects a red laser light beam of wavelength λ through a diffraction grating labeled 750 lines/mm onto a screen that is positioned a distance l from the diffraction grating. The diffraction grating has a distance d between adjacent lines. The...

Homework Statement A Cassegrain telescope has a 500mm diameter , a focal length of 5000mm and a central obstruction of 80mm diameter. Calculate: 1) the magnification with a 25mm eye piece 2) the light gathering power compared to aye of 5mm in diameter 3) the angular field in the sky if the...

Hi Say I have an oven, from which atoms are effusing through a very small aperture. By "small" I mean such that it does not disturb the thermal equilibrium of the atoms. Now say I choose to e.g. shine laser light onto the atoms transversely to the direction from which the atoms emerge out of...

Can you please help me find which terms match these definitions: 1. Reflection from a smooth surface in which the angle of incidence equals the angle of reflection. 2. Imaginary line perpendicular to the surface and serves as a reference line for angular measurement. 3. Straight...

Homework Statement This is more of a general conceptual question. When finding the image produced through a convex or concave lens, I know that you can use the equation magnification = (height of image/height of object) to find the magnification of the image produced. But does this...

Homework Statement Consider a thin bi-convex lens with refractive index n which has spherical surfaces with equal radii of curvature r and a measured focal length f. The lens floats horizontally on the surface of liquid mercury so that its lower surface effectively becomes a spherical mirror...

I am curious about the differences between optics in the fields of (Bio)engineering and physics. Mainly, I'm interested in finding out how the research differs between the two fields and which would be the best for an undergraduate who is interested in graduate school. From what I understand...

Hi guys, I have an optics question. I am running an activity for kids to simulate being inside a camera. So I am in a dark room, and I have a small hole in one of the doors which allows light in. An image comes in through the hole, and a magnifying glass can be used to focus this image, which...

Hello all. I am in the process of designing a mechanism for collimating laser diodes for a personal project. I don't have training in optics so I am stuck with this problem: I need to determine the focal length of a lens that can be used to collimate a laser beam with divergence 45 degrees...

Hi Guys I have a very simple and basic question. Assume interface of two dielectric mediums. If the t is transmition cofficient for electricfield from medium 1 to medium 2 with refractive indexs n1 and n2, what is the transmitivity of power from medium 1 to medium 2? I know it is...

So, I am a freshman signing up for classes next year. I have only taken Physics I - Mechanics, and I am done with Calc III, and I have the opportunity to take a lab course on quantum optics. I am obviously not very prepared, but I have been exposed to surface level quantum concepts quite a bit...

Hi, I was hoping someone would be able to help me with a microscopy problem that has been puzzling me for a while. I'm building a basic microscope from scratch using a 50x long working distance Nikon objective (LU Plan ELWD, wd = 10.1mm, NA = 0.55). The sample is illuminated from above using...

Hi, I'm in my junior year as a physics major. I started out convinced that I wanted a Ph.D., but now I'm not so sure, so I've been looking around for interesting paths that don't involve one. I've run across the optics/optical engineering masters programs at URochester, UArizona, and a...

Homework Statement 1. A soap bubble is colored because of: a. dispersion b. diffraction c. thin film interference d. all of the above Homework Equations The Attempt at a Solution I don't understand the concepts very well...at first I though the answer was dispersion...

Homework Statement A large cube of glass has a metal reflector on one face and water on an adjoining face (the figure). A light beam strikes the reflector, as shown. You observe that as you gradually increase the angle of the light beam, if Theta is greater than 58.7 no light enters the water...

quantum optics is a reference to a "c-number" Hi In my lecture notes on quantum optics is a reference to a "c-number" electric field, and it is stated that, since it is a c-number, there is no corresponding Hamiltonian. As far as I have understood, a c-number is a classical value of some...

I read through all of the previous sign convention posts on this forum (and googled a lot and checked a bunch of textbooks) before posting this question. I don't understand the sign convention properly for geometric optics. There are two conventions that I've understood so far, and I've got a...

So far my friends and I figured out that we will take a solution of chlorophyll, carotene and something else, then place it between white light and prism to see the spectrum on a screen. For a physical part of this experiment (there are also chemical and biological), we want to take photos of...

Optics -- Reflection of image from a moving mirror I have a dufficult question which I couldn't find an answer to, yet: If I am standing in front of a mirror - I can see my image, naturally. Now, let's say that the mirror is actually a very long train and it moves parallel to me . And...

As you know,a pure sine wave extends infinitely in both directions and a wave which is the composition of some different frequencies,has a limited extent.Does it mean that such a wave is a pulse moving in space or it has limited range?(I know its crazy to talk about the range of light,but I've...

Homework Statement a microwave source is placed behind two identical slits, as represented in the diagram above. The slit centers are separated by a distance of 0.20m, and the slit widths are small compared to the slit separation but NOT negligible. The microwave wavelength is 2.4X10^-2m. The...

Hi, today a question crossed my mind. I was thinking about mirrors and colors, why they exist and how does light interact with them. And I always heard that white is the mix of all colors, and that white reflects all the colors. It makes sense because one points a red light to a white wall, the...

Homework Statement A nearsighted patient's far point is 0.717 m from her eyes. She is able to see distant objects in focus when wearing glasses with a refractive power of -1.45 diopters. What is the distance between her eyes and the glasses? di = 0.717m refractive power = -1.45 diopters...

Problem 1 A flat screen TV is place on a wall in a room. A lens of focal length 50cm is placed between the television and the opposite wall so that a sharp image with one quarter of that of the area of the television is produced on the opposite wall. Answer: Magnification =...

Homework Statement 1) I have five lenses with f=25 placed at distance 50 from each other, what is the focal length of this system? 2) A light source is placed in the focal point of a lens with f=50, at d=600 a lens with f=400 is placed, at the focal point of the second lens the image is...

Homework Statement In a thick lens, how we do to get the primary and secondary principal planes Homework Equations (1/Si)+(1/So)=1/f The Attempt at a Solution I tried to get to get that with the Newtonian equation

Homework Statement Show that the displacement current density which flows when a parallel plate capacitor gets charged is ε(dE/dt) where ε is the permittivity of the medium between the capacitor. What is the energy density stored in the capacitor and the force per unit area (pressure) on the...

Homework Statement Calculate the matrix for the optical system which takes rays from the object plane to the image plane for a simple lens and show how this leads to 1/v = 1/u + 1/f Also show that the matrix can be written in the form \left[ \begin{array}{cc} 1/M & b \\ 0 & M...

1.An illuminated arrow 2 cm high is placed 108 cm from a diverging lens of focal length-36 cm. Find the position and height of the image. The answers are supposed to be -27 cm and 0.5 cm. Any help would be great. Thanks:!)

θHomework Statement The sun of (diameter D) subtends an angle of θ radians at the pole of the concave mirror of focal length f. The diameter of the image of the sun formed by mirror is _____ Homework Equations 1/v+1/u=1/f The Attempt at a Solution confused with question. Either i...

Homework Statement Given two counter propagating monochromatic electromagnetic plane waves with equal strength and frequency but orthoganal polarization, (one is y polarized, the other is z polarized). More specifically, the z polarized wave is traveling in the positive x direction and the y...

I'm looking for a good laser for optic experiments. All the professional papers I've read show the use of a 351nm Argon Ion laser. A new 30 mW one of these is about $6,000, but I see used ones pop up on Ebay from time to to time. My question is, is there a difference between this laser used...

Hia all. I would like to request comments and maybe clarificaions on the task and solutions provided in the attached PDF. It was one of our homework tasks and, IMO the provided solution does not solve the task at hand. I'm currently in a dispute with the chief TA about this and so far...

Well, This isn't a homework , but today in class we talked about how lights shining on a object produce different color. But I do not know what color it produces?? I know that Primary colors of light are red green and blue. Secondary are magenta and cyan and yellow. If we have a red cherry...

Dear Forum, Consider an object, illuminated with coherent light, that is located very far away from a positive lens. The object is considered to be at "optical infinity" (its distance is simply very large compared to the focal length of the lens). In that case, the image of the object (real...

Homework Statement Problem is very simple but the textbook used for this class is complete garbage and has confused me to no end. a) Convert the following absolute power gains (dBm) to decibel power gains (dB). 10^-3 dBm, 2^n dBm b) Convert the following decibel power gains (dB) to...

My physics dept offers an optics class with the following descriptive summary: Geometric optics, periodic and non-periodic waves; Doppler effect; interference and diffraction, diffraction gratings; theory of polarization of light; fiber optics and introduction to lasersIt says the math you need...