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Mathematics of the cyclotron The centripetal force is provided by the transverse magnetic field B, and the force on a particle travelling in a magnetic field (which causes it to curve) is equal to Bqv. So, (Where m is the mass of the particle, q is its charge, v is its velocity and r is the radius of its path.) Therefore, v/r is equal to angular velocity, ?, so And, the frequency Therefore, This shows that for a particle of constant mass, the frequency does not depend upon the radius of the particle's orbit. As the beam spirals out, its frequency does not decrease, and it must continue to accelerate, as it is travelling more distance in the same time. As partic
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submitted by raman_shadow (754 m) on 22 May 2007 00:25:58 IST (1 comments 98 views)
A laser is constructed from three principal parts: An energy source (usually referred to as the pump or pump source), A gain medium or laser medium, and Two or more mirrors that form an optical resonator. Pump sourceThe pump source is the part that provides energy to the laser system. Examples of pump sources include electrical discharges, flashlamps, arc lamps, light from another laser, chemical reactions and even explosive devices. The type of pump source used principally depends on the gain medium, and this also determines how the energy is transmitted to the medium. A helium-neon (HeNe) laser uses an electrical discharge in the
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submitted by akshaybansal (312 m) on 21 May 2007 23:40:46 IST (1 comments 105 views)
WHEN A HEART IS DIPPED FULLY OR PARTIALLY IN THE LOVE OF A GIRL, THEN THE LOSS IN STUDIES IS EQUAL TO TIME SPENT IN HER MEMORIES. SO......BOYZ ..AAJ HAMNE KYA SEEKHA??? IN IIT/AI PREPS , MAKE BOOKS UR GALFRND.......NO NEEDA LUKIN HERE N THERE..... ISSUED IN BOYZ INTEREST BY MINISTRY OF EDUCATION.
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submitted by coolrochakm (100 m) on 21 May 2007 20:04:46 IST (5 comments 182 views)
IF YOU DO NOT GO THROUGH THE FOLLOWING THEN YOU ARE AN IDIOT. IF YOU HAVE GONE THROUGH THE ABOVE RUBBISH THEN YOU ARE AN IDIOT. MORAL: WE ARE ALL IDIOTS. SO NEXT TIME &nbs
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submitted by fatafati (14 m) on 21 May 2007 18:54:03 IST (3 comments 153 views)
Want to know more about how dating is done??? ???????????? ? ? ? ? ? ? RADIOCARBON DATING: How Carbon-14 is MadeCosmic rays enter the earth's atmosphere in large numbers every day. For example, every person is hit by about half a million cosmic rays every hour. It is not uncommon for a cosmic ray to collide with an atom in the atmosphere, creating a secondary cosmic ray in the form of an energetic neutron, and for these energetic neutrons to collide with nitrogen atoms. When the neutron collides, a nitrogen-14 (seven protons, seven neutrons) atom turns into a carbon-14 atom (six protons, eight neutrons) and a hydrogen atom (one proton, zero neutrons). Car
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submitted by coolguy2007 (79 m) on 19 May 2007 18:22:31 IST (7 comments 271 views)
1...JISKA EK BI DOST NAI USKO KYA BOLTE??? ... ... ... ... "koena mitra" (koi-na-mitra) 2... once rani mukharjee was given punishment 2 eat 1000 chewingums. she was scared bt den suddenly saif ali khan said sumtin in her ears n she started eatin how??? ... ... ... ... ... coz saif said"chak de chak de,chakde sare GUM,chakde chakde chakde,tere sung hai hum!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" 3...suppose ek ladki baarish me bheeg rahi hai to tum use pani se kaise bachaoge? ... ... ... ... ...simple hai yaar...use apna dil dedo...dil CHAHTA(umbrella) hai!!!" 4..ek calculator dusre calci ko kya bola? ... ... ... ... ... ..."CASIO??
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submitted by prahalad (28 m) on 18 May 2007 14:17:48 IST (4 comments 130 views)
BE A DIODE,2 REMOVE -VE THINKING. BE A TRANSISTOR,2 AMPLIFY THE CHARACTER. BE A RESISTOR , 2 DROP BAD HABITS. BE A CAPACITOR , 2 STORE GOOD THOUGHTS.. HAVE AN ELECTRIFYING LIFE.....
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submitted by coolrochakm (100 m) on 21 May 2007 19:50:00 IST (0 comments 98 views)
Conductors in Electrostatic Fields In general a conductor can be defined as a region in space where charges are free to move (e.g. a metal). In a static situation the charges don?t move. This implies that there is no field within then conductor. Thus, inside a conductor: E (r) = 0 f (r) = constant; i.e. the conductor is an equipotential volume. At the sur face of a conductor the field (E) nearby the surface is not zero. In order for the excess charge at the surface of the conductor to be in equilibrium, the field vector MUST be normal to the surface. Thus, at the surface of a conductor: En (r) is not zero. Et (r) = zero f (r)
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submitted by edison (4866 m) on 21 May 2007 19:31:31 IST (1 comments 216 views)
An old man lived alone in Minnesota. He wanted to spade his potatogarden, but it was very hard work. His only son, who would have helped him,was in prison. The old man wrote a letter to his son and mentioned hissituation:Dear Son,I am feeling pretty bad because it looks like I won't be able to plant mypotato garden this year. I hate to miss doing the garden because yourmother always loved planting time. I'm just getting too old to be diggingup a garden plot. If you were here, all my troubles would be over.I know you would dig the plot for me, if you weren't in prison.Love,DadShortly, the old man received this telegram: "For Heaven's sake, Dad, don'tdig up the garden
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submitted by prahalad (28 m) on 18 May 2007 14:20:32 IST (5 comments 136 views)
Here is how can you login to your Windows xp computers without any password? Just make a bootable CD/Floppy.You can easily create it with Nero or a floppy with format command. boot your pc with it,type the following(assuming your windows is in C: drive): cd c:\windows\system32\config ren sam sam1 cd c:\windows\repair copy sam c:\windows\system32\config\sam original plz plz comment If you find any problem plz ask me.I will help you.
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submitted by im.punit (22 m) on 21 May 2007 15:30:05 IST (1 comments 177 views)
A local newspaper ran a competition asking for a rhyme with the mostromantic first line... but the least romantic second line. Here are someof the entries they received.I thought that I could love no otherUntil, that is, I met your brother.Roses are red, violets are blue, sugar is sweet, and so are you.But the roses are wilting, the violets are dead,the sugar bowl's empty and so is your head.Oh loving beauty you float with graceIf only you could hide your face .Kind, intelligent, loving and hot;This describes everything you are not.I want to feel your sweet embraceBut don't take that paper bag off of your face.I love your smile, your face, and your eyes -Damn, I'
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submitted by 963852741 (5 m) on 21 May 2007 11:30:05 IST (4 comments 113 views)
7 Destructive Habits of Unsuccessful People WARNING! If you want to have a fantastic life, never engage yourself in these 7 deadly habits that incompetent people do. Number 1 - They Think, Say, & Do Negative Things. Yup. They see problems in every opportunity. They complain that the sun is too hot. They cursed the rain for ruining their plans for the day. They blame the wind for ruining their hair. They think that everyone is against them. They see the problems but never the solutions. Every little bit of difficulty is exaggerated to the point of tragedy. They regard failures as catastrophes. They become discouraged easily
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submitted by INDIAN_ARMY19890 (1265 m) on 7 May 2007 18:41:35 IST (3 comments 180 views)
Hi dear Taking control of your life is getting in touch with your values, setting meaningful goals and identifying your vision. To be in control of where life is taking you means being more productive, dealing more effectively with stress, having the ability to solve problems, handing change and developing healthy optimism. Start with these 7 steps and you are on your way. 1. Get in touch with your values: When we feel like we are working hard but not getting anywhere it is probably because our priorities are not aligned with our values. To begin identifying your values ask yourself these questions: Ø What is important to me?
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submitted by INDIAN_ARMY19890 (1265 m) on 6 May 2007 23:55:58 IST (3 comments 133 views)
The weather at the Cape of Good Hope makes it a notorious location where many ships have been lost to the sea. Philip Wood, the famous diver, has discovered four ships that sank in the same spot, one on top of each other.With some skill, Philip was able to determine the name, captain, cargo, destination and year each ship was built. The question is, can you? 1. During his first exploration of the site, Philip determined there were four ships - the Red Rover, the ship built in 1743, the ship captained by Quigley and the ship carrying tea that was bound for North America.2.The ship that carried a cargo of saffron was built after the ship that carried a cargo of tea
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submitted by Urva (187 m) on 21 May 2007 12:41:55 IST (0 comments 98 views)
Geometrical permutations If n pts. are given, then no. of straight lines(if no 3 pts. are collinear) is nC2. If out of n pts., m are collinear, then no. of straight lines is nC2 - mC2 +1. No. of triangles formed from n pts.(no 3 pts. are collinear) nC3. No. of triangles formed from n pts., when m are collinear is nC3 ? mC3. If a polygon has n sides, then no. of diagonals is [n(n-3)]/2. No. of Parallelogram in 2 systems of parallel lines(m parallel lines in first, n parallel lines in second) is nC2 * mC2. Jai Hind. original.
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submitted by im.punit (22 m) on 21 May 2007 10:04:33 IST (8 comments 204 views)
The Age of the Universe The age of the earth and the universe is of crucial importance to cosmological theories, and of intense popular interest as well. Enough data have accumulated since the early 18th century that we may now critically and objectively attempt to determine whether there's a fundamental underlying relation affecting time itself. II. Data 1644: Hebrew scholar Dr. John Lightfoot (1602-1675), Vice-Chancellor of the Cambridge University constructed a chronology of history from Biblical genealogies. He calculated that the world was created at the equinox in September of 3298 B.C., at the third hour of the day (9 A.M.). He didn't specify the par
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submitted by INDIAN_ARMY19890 (1265 m) on 17 May 2007 00:14:06 IST (2 comments 155 views)
The educational system in India has faced a basic dilemma ever since its introduction by the British. India suffers from very low literacy as compared to other developing countries. Yet one gets to hear about the tremendous impact that Indian doctors, engineers and scientists have had around the world. This conveys the impression that the Indian schooling system works. I believe that that impression is wrong and that in fact the Indian school system is inefficient and biased against the poor. As put up by someone, one of our club members, ?India is heading towards a foreign based culture & so is the education. We are modifying the current system suit ex
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submitted by prateek.agarwal (307 m) on 21 May 2007 08:05:52 IST (1 comments 118 views)
All my friends there are a lot of queries regarding Manipal...Here I present you a video of KMC Manipal...Even though it focuses mainly on KMC Manipal....it clearly shows the lifestyle in Manipal...Hope all my friends would benefit from this.....http://rapidshare.com/files/27360006/LMX.rmvb.htmlThis video needs Real Player to run...if u don't have dont worryHere's the alternative real playerhttp://rapidshare.com/files/27360890/realalt144.exe.htmlAnd friends never ever forget to rate me if u find this video kool...Cheers and RegardsNeal
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submitted by neal (119 m) on 20 May 2007 22:39:16 IST (2 comments 351 views)
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