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boywholived

Scorching goIITian

Posted on 14 Apr 2012 15:12:15 IST

Topic : PLAY WITH GRAPHS

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                        PLAY WITH GRAPHS  Please click like and comment the graph which you like.Try to find some relationship between graphs i.e y=x^2 and sin x and (sin x)^2 .Let your mind and brain blossomTell me the graphs that you want to display   Graph for sin(x) -32-30-28-26-24-22-20-18-16-14-12-10-8-6-4-22468101214161820222426283032 -3.5-3-2.5-2-1.5-1-0.50.511.522.533.5 x: 10.5139131y: -0.88622658       Graph for cos(?x)

Mayank Mittal

Cool goIITian

Posted on 23 Apr 2012 12:01:57 IST

Topic : Modern Einstein Theory of Relativity

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Einstein's Theory of Relativity states that ,  "Agar ek ladke ke haath par kisi ladki ka haath ho to ek ghanta bhi ek minute ki tarah guzarta hai aur agar ek haath ek garam tave pe rakha ho to ek minute bhi ek ghanta ke barabar guzarta hai. "Best Explanation of Albert Einstein's Special Theory of Relativity rate if you like

boywholived

Scorching goIITian

Posted on 22 Apr 2012 17:37:30 IST

Topic : Toughest Problems in The world(must have a look)

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 Source Wikipedia.Don't forget to click like if you find it interestingMillennium Prize ProblemsFrom Wikipedia, the free encyclopedia  This article is about the math prizes. For the technology prize, see Millennium Technology Prize.The seven problems are:The Millennium Prize Problems are seven problems in mathematics that were stated by theClay Mathematics Institute in 2000. As of March 2012, six of the problems remain unsolved. A correct solution to any of the problems results in a US$1,000,000 prize (sometimes called aMillennium Prize) being awarded by the institute. The Poincaré conjecture, the onl

edison

Forum Expert

Posted on 16 Nov 2009 14:29:42 IST

Topic : Common Vision Defects

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Common Vision DefectsGuys, read carefully reason behind common vision defect & vision functioning to take care of vision ...    Correction of Common Vision Defects After understanding of eye vision & about here are the reasons which will be helpful to correct common vision defects & also why its arises...   Hyperopia (Farsightedness) Know resons behind common eye desease Hyperopia(Farsightedness)..  Myopia (Nearsightedness)  Know resons behind common eye desease Myopia(Nearsightedness)..   AstigmatismKnow resons behind common eye desease Astigmatism .. Also Read Helpful Articles:&

mohd anees

New kid on the Block

Posted on 14 Dec 2011 14:46:29 IST

Topic : my problem

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i cant concentrate much more on my own sub i want 2 do an entrance test but when i see the paper i m just lose my all memory and i m confused that which of of one is the correct answer even if know same thngs will hapens with me                                                          any shortcut if u have or any ideas plz say me i will try my level best     &n

Chinmay Pisu

Cool goIITian

Posted on 16 Nov 2011 20:07:10 IST

Topic : National aptitude test

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 National aptitude test might include Physics, Chemistry and Math Earlier it was announced that from 2013, IIT’s and NIT’s and other state engineering colleges in the country will go for a common entrance test , which will be an aptitude test.News is that the National Aptitude Test will not only include questions based on reasoning but might also include all the subjects that a student has studied in their schools, which includes Physics, Chemistry , Math. The IIT council has also proposed a percentile based normalization of different board’s so 12th marks can be given weightage for admission into the under-graduate courses across the country.

Pratrick

New kid on the Block

Posted on 12 Aug 2011 21:02:03 IST

Topic : Noida based Abstract Consultancy has launched go4iit.com!!!

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go4iit.com is a leading educational firm actively involved in providing educational services of free of cost. go4iit.com is India's first educational portal offering completely free solutions for preparation of IIT-JEE and other engineering entrance exams.TOI -NOIDA – 07-August-2011 –A Noida based online management company Abstract Consultancy provides end to end services in leads solutions, competition analysis, market insights, lead generation and sales channel development. The company combines a unique service portfolio with a revolutionary execution model that provides up to 40% reduction in the cost and faster turnaround time.The organizati

SWEETA AGARWAL

New kid on the Block

Posted on 7 Mar 2011 20:49:01 IST

Topic : OPTICS

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Normal 0 MicrosoftInternetExplorer4 st1:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";}An optical fiber or optical fibre is a thin, flexible, transparent fiber that acts as a waveguide, or "light pipe", to transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the de

tejas kulkarni

New kid on the Block

Posted on 10 Feb 2011 09:13:49 IST

Topic : eye disease

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 myopia <near sightedness>hypermetropia <far sightedness>presbyopia (astigmatism)

jay

Cool goIITian

Posted on 16 Sep 2010 20:07:45 IST

Topic : Optics and Mysteries.

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The PhiladelphiaExperiment was ahistorical and allegednaval experimentconducted by the USmilitary at thePhiladelphia NavalShipyard that waslocated inPhiladelphia,Pennsylvania.In the United States towards the middle of World War II onOctober 28th, 1943. During this experiment, the UnitedStates Naval Destroyer battleship escort known as the USSEldridge was aimed to be rendered entirely opticallyinvisible to any and all human observers for a short periodof time.For a long time, this experiment was largely thought to bea hoax because the thought of making something opticallyinvisible was something that had previously been bornentirely out of science fiction literature.

arjun chopra

Cool goIITian

Posted on 20 Jul 2010 16:56:26 IST

Topic : THE KID IZ 10 YR OLD AND IZ GROWIG AT THE SPEED OF LIGHT

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to begin wid i am writing this article to create awareness among the people of delhi or i should say the students of delhi.........just like brain drain: which meanz when the intelcts from our country go to diff countriez in search f betr job opertunitez and btr lyf style....in the same way students frm their hometown go to diff citez in search of btr colleges and univ......but i agree if u get the heavy weights lyk iits,bits..nd only sum top 5 nits or iiits thn its worth goin......but just lyk ppl who go abroad r nt aware of the opertunitiez whch r opn to them in thir own mothrlnd......today i wud lyk u ppl......i am not includin the supa intelegnt ppl...bt the abv

silent killer

Blazing goIITian

Posted on 23 Mar 2010 16:55:41 IST

edison

Forum Expert

Posted on 18 Feb 2010 10:34:35 IST

Topic : Sun Dogs (parhelia)

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 Sun Dogs (Parhelia)At the points on the 22 deg halo which are on a horizontal line with the sun, the arc commonly broadens to two bright spots, reputedly referred to by artic people as the sun's dogs. The refracted light at these points is so much more intense than the remainder of the 22° halo that they are often seen when the remainder of the arc is not. The parhelia often show rainbow colors from the dispersion in the ice crystals. While appearing on the 22° halo when the sun is at the horizon, they appear to be slightly outside it at higher altitudes and will flare into a white tail leading away from the 22° halo. Under appropriat

Himanshu

Forum Expert

Posted on 18 Apr 2007 12:50:11 IST

Topic : optics again!!!!!!!!!!!!!!!!!!!!

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1)If aperson is at some dist. frm a mirror of C  = d and he is passing by then he can see his image upto dist. 3d 2)formation of rainbow is due to T.I.R. and refraction 3)but twinkling of stars is due to refraction only 4)moons look bigger due to optical illusion only 5)the time taken by a light ray to pass through a transparent plate of a thichness t and R. I .  = # is T = #T/C 6)in a vaccum all colours travel wid same vel. but in a medium red travels fastest 7)if we write all the colour names wid respective colours (eg. red wid red, voilet wid voilet and see it through a slab then the colour we will se as  V..

Purav Master

Blazing goIITian

Posted on 9 Sep 2007 15:20:19 IST

Topic : Ray Optics

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The Law of Reflection  When a ray of light strikes a plane mirror, the light ray reflects off the mirror. Reflection involves a change in direction of the light ray. The convention used to express the direction of a light ray is to indicate the angle which the light ray makes with a normal drawn to the surface of the mirror. The angle of incidence is the angle between this normal and the incident ray; the angle of reflection is the angle between this normal and the reflected ray. According to the law of reflection, the angle of incidence equals the angle of reflection. These concepts are illustrated in the animation at the right..  Image Formatio

CHANDRA PRAKASH

Cool goIITian

Posted on 27 May 2009 19:54:46 IST

Topic : OPTICAL ILLUSIONS DEFINITELY U LL LYK THEM

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 Stare at the center for 10 seconds and begin moving your eyes around the outer perimeter...Does it appear to be moving, shimmering, or just making you dizzy?Also: Follow the outermost groove and watch itchange from a groove to a hump as you go around the wheel.  Realistic Dice IllusionAs you look at these dice, try to determine if they are standing up, or laying flat.It seems as if they are doing both. Elephant Leg IllusionHow many legs does this elephant have?4, 5, 6, maybe 7?- - - Good Luck Figuring It Out! -Tallest Soldier IllusionCan You Pick Out the Tallest Soldier? Did You Find Him? Hmm...They Are All the Same Height!  Impos

KAPIL CVS

Blazing goIITian

Posted on 29 Apr 2009 13:53:20 IST

Topic : THEORY OF RELATIVITY

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THEORY OF RELATIVITY:The theory of relativity, or simply relativity, generally refers specifically to two theories of Albert Einstein: special relativity and general relativity. However, the word "relativity" is sometimes used in reference to Galilean invariance.Special relativity:Special relativity is a theory of the structure of spacetime. It was introduced in Albert Einstein's 1905 paper "On the Electrodynamics of Moving Bodies"; however, the term was first used by Galileo Galilei in 1632 in his Dialogue concerning the World's Two Chief Systems. But Galileo's version was flawed: for example, he thought the spin of the Earth caused

KAPIL CVS

Blazing goIITian

Posted on 19 Apr 2009 11:06:17 IST

Topic : SPONTANEOUS EMISSION

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Spontaneous emission:If a collection of atoms are in the excited state, spontaneous decay events to the ground state will occur at a rate proportional to N2, the number of atoms in the excited state. The energy difference between the two states ΔE is emitted from the atom as a photon of frequency ν21 as given by the frequency-energy relation above.The photons are emitted stochastically, and there is no fixed phase relationship between photons emitted from a group of excited atoms; in other words, spontaneous emission is incoherent. In the absence of other processes, the number of atoms in the excited state at time t, is given by, where N2(0) is the number o

KAPIL CVS

Blazing goIITian

Posted on 19 Apr 2009 11:08:41 IST

Topic : STIMULATED EMISSION

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STIMULATED EMISSION:If an atom is already in the excited state, it may be perturbed by the passage of a photon which has a frequency ν21 corresponding to the energy gap ΔE of the excited state to ground state transition. In this case, the excited atom relaxes to the ground state, and is induced to produce a second photon of frequency ν21. The original photon is not absorbed by the atom, and so the result is two photons of the same frequency. This process is known as stimulated emission. The rate at which stimulated emission occurs is proportional to the number of atoms N2 in the excited state, and the radiation density of the light. The base probability

MUDIT

Blazing goIITian

Posted on 4 May 2009 20:14:09 IST

Topic : ever thought why optically active compounds rotate plane polarized light?

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 Optical activity is a type of birefringence. Any linear polarization of light can be written as an equal combination of right-hand (RHC) and left-hand circularly (LHC) polarized light:where is the electric field of the light. The relative phase between the two circular polarizations, 2θ0, sets the direction of the linear polarization to θ0. In an optically active material the two circular polarizations experience different refractive indices. The difference in the indices quantifies the strength of the optical activity,. This difference is a characteristic of the material (for substances in solution it is given as the specific rotation). After trav

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