What is Index: Definition and 827 Discussions

Indian Institute of Management Lucknow (abbreviated IIM Lucknow or IIM-L) is a public business school in Lucknow, Uttar Pradesh, India. It was established in 1984 as the fourth Indian Institute of Management (IIM) by the Government of India. IIM Lucknow offers post-graduate diploma, fellowship and executive programs in management. It is recognised as an "Institution of Excellence" by India's Ministry of Human Resource Development. IIM Lucknow also serves as the mentor institution for the newly established IIM Jammu, IIM Rohtak and IIM Kashipur. It also served as a mentor institute to IIM Sirmaur till 2018.The institute is on a 200-acre site in the northern outskirts of Lucknow. It also has a second campus on a 20-acre site at Noida exclusively for one year full-time MBA program (IPMX), Two-year PGP for working executive and executive education. The admission for the two-year PGP and fellowship programmes is done through Common Admission Test (CAT), while GMAT score is used for International Programme in Management for Executives, a one-year full-time residential programme equivalent to an MBA program, while admission to the Two-year PGP for working executive program is done based on GMAT score or a competitive written examination conducted by IIM Lucknow. The shortlisted candidates based on GMAT or the written examination go through the Writing Ability Test and Personal Interview (WAT & PI) to get final selection. The programs are accredited by the global accreditation body AMBA and AACSB. The institute has tie-ups with 24 leading B-schools across the world for student exchange. A number of b-competitions, cultural and sports events are organised by various clubs, academic interest groups and committees throughout the year.

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  1. E

    Difference in index refraction

    What does a higher index of refraction really mean? I know about speed wavelength etc but let's say you have 2 different material to choose and ignoring other variables, and focal length, diameter are all the same between both material, would you choose a lower index refraction or higher. Thanks
  2. C

    Determining the Index of Refraction

    Homework Statement PART A) What is the frequency of blue light that has a wavelength of 450 nm? PART B) What is the frequency of red light that has a wavelength of 650 nm? PART C) What is the index of refraction of a material in which the red-light wavelength is 450 nm? Homework...
  3. R

    How Does Temperature Gradient Affect Refractive Index in Fluid Thermodynamics?

    Does anyone have an idea about a formula relating the refractive index of a medium to the temperature gradient (Generally)?
  4. M

    Refractive Index of MoS2 - Answers to Your Questions

    ?? Refractive Index ?? Dear all, For particle size distribution of MoS2 I need refractive index and absorption for this compound. Actually I couldn’t find it in the literature. Could you help me for this aim?
  5. M

    External.menuArguments image index

    I've created a DLL that contains JavaScript plugins for the IE right click menu like this; http://img407.imageshack.us/my.php?image=20165640mt5.jpg I haven't restricted display to the proper context in the registry yet. In the Alt Text entry I have a small script that looks like; var altV...
  6. B

    Nilpotent Matrix A = {{{021,002,000}}}: What is its index?

    Homework Statement A square(nxn) matrix is called nilpotent of index k if A\neq0, A^2\neq0,...A^(k-1)\neq0, But A^k=0 for some positive integer K Verify that A={{{021,002,000}}} is nilpotent. What is its index? Show that for this matrix (I-A)-1= I + A + A^2 The Attempt at a...
  7. E

    Thermal Compression + Expansion Index

    Could anyone tell me what the compression and expansion is used for in a Thermodynamics situation? What is the notation for Compression and Expansion in a formula? I am trying to calculate work done by a heat engine. Thanks
  8. E

    Compression and Expansion Index

    Could anyone tell me what the compression and expansion is used for in a Thermodynamics situation? What is the notation for Compression and Expansion in a formula? I am trying to calculate work done by a heat engine. Thanks
  9. D

    True/False Help: Index of refraction and Reference Frames

    Which of the following statements are true? 1. The index of refraction is the ratio of the vacuum speed of light to the speed inside the medium. 2. The index of refraction is independent of the wavelength of the light. 3. If a light beam is incident perpendicular to the surface of another...
  10. M

    Intersection with empty index set

    If I is empty, and the collection of sets {A_i} is indexed by I, then the intersection of all the A_i is equal to the universal set. Can someone explain why? Or better yet, give a proof?
  11. Z

    Snell's law with a complex refractive index

    hello everyone Consider extinction coefficient k, n becomes N=n-ik. the textbook says NsinA=N'sinB still holds itself. But the sinB,for exmple, may be a complex number, i want to know how to get B? how to understand this situation, which is the refractive angle? the B's real part?
  12. B

    Index of refraction, calculate frequency. ~ stuck at 2 unknown variables

    Homework Statement An laser is used of wavelength 544 x 10^-7 m (in air) for eye surgery. The index of refraction of the fluid in an eye is n = 1.43. Calculate the frequency of the laser waves in the eye. n = 1.43 L1=544 x 10^-7 L2= f = Homework Equations n=L1/L2 L1 being the wavelength...
  13. B

    Index Notation and Dual Vectors

    Homework Statement Find the dual vector of the following tensor: 6 3 1 4 0 5 1 3 2 Homework Equations dj= EijkTik Where Eijk = 1 if ijk=123, 231, 312 Eijk = 0 if i=j i=k or j=k Eijk = -1 if ijk = 132, 213, 321 The Attempt at a Solution Ok...
  14. J

    Group velocity and reflective index relationship

    how these two are related to each there? if refractive index is given as a function of angular frequency, how both are related? reflective index= omega*c / k.anyone?
  15. M

    Refractive Index Units - What Units are Used to Measure Refractive Index?

    Refractive Index Units - URGENT - Homework Statement Does the Refractive Index of a medium have units. If so what are they? i am needing this for a lab report - so i can quote answers and feel fine that i am not giving any units. I am pretty sure there arent any.
  16. M

    Optics - Refractive Index etc

    http://aycu12.webshots.com/image/44931/2004851894362651280_rs.jpgany idea what then?
  17. P

    Why some materials have bigger refractive index than others?

    why some materials have bigger refractive index than others? Let's say why air have 1.003 refractive index, and quartz glass 1.46?
  18. quasar987

    What does the ff mean in the index?

    What does the "ff" mean in the index? I am browsing the index in Dummit & Foote and I notice that a lot of the page numbers have ff. after them. What does this mean? For instance, "Gaussian integers, 229ff., 271, 278, 289ff., 377"
  19. B

    Understanding the Witten Index for SU(N)

    Does anyone know where I can find a brief and useful description of the Witten index? The Wikipedia entry isn't bad, but didn't give me a real good understanding of it. (I have ascertained that for SU(N), the Witten index is N. Does this mean that SU(N) has N supersymmetric vacua, or that...
  20. E

    Solving Permutation Index Homework Problems

    Homework Statement I'm taking a Magnetic Fields class, and the professor taught us doing cross and dot products using the permutation index. But I don't quite understand how it works completely. I have these problems: Given: \vec A=\hat x + 2\hat y - 3\hat z \vec B=3\hat x - 4\hat y...
  21. L

    Minimum Thickness of a film with wavelength and index of refraction.

    1. If the index of refraction of you soap was 1.35, calculate the (minimum) thickness of the film at that part of the film that appears green, given that in air, green light has a wavelength of 535 nm. 2. x = L(lambda/2t) 3. I can't figure out how to derive the equation with n...
  22. J

    Understanding Refractive Index Measurement in Interference Patterns

    How can one measure refractive index by knowing the change in angular range of the first dark bands of an interference pattern(single slit diffraction), when the apparatus is change from air to under water? I think I missed that lecture, and I am still catching up.
  23. D

    Refractive Index Calculation for Light Passing from Substance X to Substance Y

    Homework Statement For substance X, the refractive index is nx. For another substance Y the refractive index ny. Show that the refractive index for light passing from x to y is nx/ ny. 2. The attempt at a solution I'm finding it difficult to devise a solution, but I think the answer...
  24. P

    What Is the Index of Refraction of the Liquid in the Tank?

    [SOLVED] Another Index of Refraction Problem! HELP! PLEASE Homework Statement When the rectangular metal tank in Figure 33-49 is filled to the top with an unknown liquid, observer O, with eyes level with the top of the tank, can just see the corner E. A ray that refracts toward O at the top...
  25. J

    How Do You Calculate the Refractive Index of a Prism?

    Refractive Index Problem invloving prism (Please Help) Homework Statement What is given is a prism, angle of deviation and apex angle, I also have to find refractive index of the prism. To solve the problem I must prove that: Nprism = sin((A+d)/2)/ sin(A/2) The diagram given of the...
  26. N

    Stargazing Negative Refractive Index Telescopes?

    Hi, I recently read about the exciting research and progress being made with lenses made from negative refractive index materials. In theory, these materials have no limit to their resolving power and so far experiments have shown they can image objects smaller than that possible using...
  27. L

    Proving Boundedness of Double Index Array | Math Problem

    I'm just don't get this question. from my text: define\ t_{mn}\ =\ \sum^{m}_{i=1}\sum^{n}_{j=1}|a_{ij}|, [a_{ij}\ is\ a\ doubly\ indexed\ array\ of\ real\ numbers.] (a)\ prove\ that\ the\ set\ \{t_{mn}\ :\ m,n\ \in\ N\}\ is\ bounded\ above. (b)\ use\ (a)\ to\ conclude\ that\ (t_{nn})\...
  28. G

    MATLAB Solve MATLAB Index Problem for Graph Labels

    I'm having a problem getting my graph labels to work. I get an error saying "? Index exceeds matrix dimensions. Error in ==> aeroproject2 at 88 plot(alphaLzero-8:alphaLzero+8,CL(1,1:17)),title('CL vs Alpha'),xlabel('Angle of Attack'),ylabel('CL')" can anyone help...
  29. G

    V-I Color Index and Astronomical Catalog

    Well, this is awkward. I seem to have forgotten what star has a 0.0 value in the V-I color index. I almost want to say Vega but that's the 0.0 in the B-V color index. I also seem unable to find raw data for the V-I color index values for spiral galaxies and was wondering if someone would...
  30. F

    Intro to elementary index notation

    This is a brief tutorial to cover the basics of index notation which are useful when handling complicated expressions involving cross and dot products. I will skip over a lot of technicalities (such as covariant and contravariant vectors) and focus on 3 dimensions - but all of what I say here...
  31. C

    Parabolic light-path's function for index of refraction

    Homework Statement The setup is a planar cross-section of a medium. The horizontal direction is 'x' and the vertical direction is 'y'. I fire a beam of light into this plane, starting at some positive y, at x = 0, and traveling horizontally in the x+ direction. I need to find a function n(y)...
  32. J

    Index of refraction and oil/water

    A scientist notices that an oil slick floating on water when viewed from above has many different rainbow colors reflecting off the surface. She aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). The index of refraction of water is 1.33. The index of...
  33. V

    What is the refractive index of Methanol in the Infra Red range?

    I'm looking for Methanol (CH3OH) refractive index (n,k) table in Infra Red 2-10micron If anyone can help me with that
  34. J

    Understanding the Refractive Index in QED by Feynman

    (I'm still reading the QED book by Feynman...) What property of the material causes a specific refractive index for a particular medium? (in other words, from the FAQ section by ZapperZ, "So the lattice does not absorb this photon and it is re-emitted but with a very slight delay.". How is...
  35. S

    Refractive index, light ray help

    Hi, this is the question in my homework. Explain what happens when a light ray enters and leaves a glass block if it hits the face of the block at right angles to it. Can someone pelase help me, i think that the light ray would just go straight through the block without bending but I am...
  36. Helios

    Relativistic mechanical index of refraction

    I have found the relativistic mechanical index of refraction which I think is n = \sqrt{[( E - V + mc^{2})^{2}- (mc^{2})^{2}]/[( E + mc^{2})^{2}- (mc^{2})^{2}] Follow the same procedure as this thread https://www.physicsforums.com/showthread.php?t=176081&highlight=optico-mechanical...
  37. Angelos K

    What is the Relation Between Velocity and Complex Refractive Index?

    The index of refraction is a complex number if the mediums conductivity is non zero. n=Re(n)+Im(n)*i We know that for real refractive index: v=c/n How is the corresponding relation for complex n? I would expect (and got from my calculations) v=c/Re(n), but since Re(n) may...
  38. L

    Glass refractive index vs wavelength, exceptions?

    Normal glasses have a larger refractive index for blue than for red. Are there special glasses that differ in this respect? Or maybe are there some minerals that behave differently, still being transparent in the visible spectrum and colorless? Thanks to tell me if you know something about...
  39. S

    Cut the end of my right index finger

    I have sustained the worst injury known to geekhood. I have cut the end of my right index finger. Mouse-clicking has become a monumental task, comparable to scaling everest. :mad::mad::cry::cry::mad::mad:
  40. Simfish

    Intermittent Fasting and Glycemic Index of Foods

    As is demonstrated by research (http://en.wikipedia.org/wiki/Calorie_restriction#Intermittent_fasting_as_an_alternative_approach) , intermittent fasting produces similar results to calorie restriction. However, I have a question here. Are the result of intermittent fasting dependent on the...
  41. F

    Index of refraction when total internal reflection ceases

    light refractions problem I don't even know where to start with this problem. Can someone please help me out? As shown in Figure P22.49, a light ray is incident normal to on one face of a 30°-60°-90° block of zircon(n= 1.923) that is immersed in water. Figure P22.49 (a) Determine the...
  42. P

    Anomalous refractive index? How doesnt this defie relativity

    I was reading this article http://news.bbc.co.uk/2/hi/science/nature/841690.stm I don't understand how this doesn't defie relativity. It sais something about you can see the light exit the caesium before it even enters, thus having went faster then the speed of light but the article sais it...
  43. J

    Second opinion for an Index Problem

    I would like to hear a second opinion about this solution that was presented to us. As a background, we have a system that will compute for the total number of records for a given a file. The arrival time for each file is set for 5 minutes. For monitoring purposes, the problem now is how to...
  44. G

    Nilpotent matrix wit h index 2

    Homework Statement Determine a and b such that A is nipotent of index 2. A:= <<a,b>|<0,0>> A is a 2x2 matrix column 1 is a and b , column 2 is 0's Homework Equations A^k=0 to be nilpotent and to be nipotent it has to be that A^(k-1) doesn't equal 0.. The Attempt at a...
  45. Simfish

    How is the index of a book created?

    Is there software available by the book publisher that allows the person to do this? Basically, a keyword search that automatically returns the page number of any inputted page, and then outputs that keyword to a page that has the index file?
  46. N

    Exploring Refractive Index & Di-Electric Constant Relationship

    The Maxwell's relation in electromagnetic theory states that refractive index is equal to the square root over the di-electric constant. This relation holds for some simple gases.But more generally,it does not.My question is why this is the case. Eugene Hecht says that this is because n...
  47. A

    Find the index of refraction

    Homework Statement Suppose a convex lens is ground so that one surface has a radius of curvature of 30.0 cm and the opposing surface has a radius of curvature of 40.0 cm. The focal length is 34.2cm. What is the index of refraction of the lens? What kind of glass is the lens? Homework...
  48. A

    Index of refraction question-.

    Suppose a convex lens is ground so that one surface has a radius of curvature of 30.0 cm and the opposing surface has a radius of curvature of 40.0 cm. The focal length is 34.2cm. What is the index of refraction of the lens? What kind of glass is the lens? Need help by using the formula...
  49. A

    Understanding Vacuum and Index of Refraction in Optics: Exploring the Basics

    can you please explain some of these questions to me? Thanks. In the PR book, it defines vacuum as empty space and I don't really know what that means. Does it mean that there is nothing (no air molecules, no other gasses, etc.) in that space? (is the atmosphere of space a vacuum also?) I've...
  50. O

    Can refractive index matching make a solid invisible in a liquid?

    How close do two refractive indices, e.g. a liquid and solid, have to be for the solid in the liquid to be invisible to the naked eye? 1st decimal place, 2nd decimal place?
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