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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
ZapperZ
1 47,870
I have been reading Classical Mechanics by goldstein for over 2 months. I have encountered the concept of Virtual...
Oct4-11 04:06 PM
Erland
3 2,825
Hello all! I am trying to work through and understand the derivation of the Legendre Polynomials from Jackson's...
Oct4-11 10:59 AM
matumich26
2 1,687
Is the index of refraction for LCP/RCP light any different from that for linearly polarized light?
Oct4-11 10:51 AM
DrDu
2 1,784
Hi all. I am a student taking A levels, I was hoping the forumites here could help me answer some doubts that I...
Oct4-11 10:12 AM
Philip Wood
6 1,249
As part of my project, i have to calculate the coercive fields of a circular disc of 50nm and 100 diameter with 4nm...
Oct4-11 08:18 AM
pranavreddy
0 685
Hello, Why doesn't a standing truck move even after applying a large force by a little boy? Is it due to inertia of...
Oct3-11 10:35 PM
1mmorta1
3 1,006
http://img89.imageshack.us/img89/3914/unled23g.png Uploaded with ImageShack.us F1x+F3x = density x Q(Vx2 – Vx1)...
Oct3-11 06:10 PM
defdek
2 1,499
So I was sitting on the train last weekend, reading through my physics book on mechanical work and its relation to...
Oct3-11 04:05 PM
Ken G
1 1,334
In solids there are crests and troughs. In highly polished surfaces there are molecular forces. But what creates...
Oct3-11 02:46 PM
rcgldr
2 1,063
Hello guys This is my first post and i am glad to be a member of this forum. There is something bugging me for alot...
Oct3-11 01:31 PM
miko1977
13 1,234
I started another post about this but I made things needlessly complicated by talking about non-ideal gasses. My...
Oct3-11 10:20 AM
prashantjha
8 4,009
I was wondering what occurs when light encounters a slit that happens to be smaller than the wavelength of light...
Oct3-11 08:37 AM
Andy Resnick
2 1,269
I'm having a play around with a simple radiation detector that has 2 electrodes with a slab of uniformly doped silicon...
Oct3-11 01:33 AM
mitch_1211
0 803
I want to find out the power required to run the turbine and the pressure of steam required to maintain the power...
Oct3-11 12:58 AM
mitch_1211
1 1,628
I have a parallel plate capacitor with a dielectric inside whose relative permittivity varies as εr = βexp(\alphax) ...
Oct3-11 12:53 AM
mitch_1211
4 1,138
what is the difference between the two? i thought fermi golden rule is enough
Oct2-11 10:13 PM
wdlang
0 1,903
I'm not exactly sure where to ask this question but I would like someone to please help explain to me how to...
Oct2-11 07:32 PM
Doc Al
5 4,347
I'm currently studying Classical Electrodynamics, and I see everywhere that the flux of a field through a surface is...
Oct2-11 05:31 PM
Qubix
3 742
Suppose that you have a sheet of copper that carries a surface charge of \sigma on each face. The electric field just...
Oct2-11 04:33 PM
matumich26
9 2,967
I can't figure out what is the motion of a charged particle at rest at origin in a constant uniform magnetic field...
Oct2-11 02:25 PM
jfy4
3 1,547
Water waves are one half kinetic energy and one half potential energy. The quote below comes from the Wikipedia wave...
Oct2-11 01:42 PM
fizzle
33 5,633
So I was debating whether or not to post this in the homework session but I feel the question I'm asking belongs here....
Oct2-11 12:37 PM
Clever-Name
0 688
I have problems understanding the use of negative signs in SHM. ie. mx''=-kx Why is there a negative sign for...
Oct2-11 11:04 AM
Doc Al
1 733
Before I get pounced on by academics from near and far, I just want to mention that I'm no longer a college student...
Oct2-11 10:33 AM
zanthal
2 749
hey, I want to ask you something about to calculate the moment of inertia for any shape. My problem is that I can...
Oct2-11 08:57 AM
opeth_35
6 884
Concerning the Convex Lens and my diagram attached, when an object is placed exactly at the principle focus (focal...
Oct2-11 08:26 AM
Yh Hoo
13 2,358
Hi, If we describe a beam splitter as follows: e^{ikx} -> \sqrt{T}e^{ikx} + \sqrt{R}e^{i\theta}e^{iky} e^{iky}...
Oct2-11 02:45 AM
McLaren Rulez
1 1,470
I have a problem i am trying to solve, the question is; Calculate the velocity ratio for this system. If the work...
Oct2-11 12:30 AM
mitch_1211
1 4,382
Really can't figure this out by dividing x and y. The only way i can do it is with equations that use quadratics and I...
Oct2-11 12:01 AM
mitch_1211
8 2,270
why is rainbow always an arc?
Oct1-11 11:49 PM
DaveC426913
15 2,552
When I was a kid listening to a transistor radio under my pillow late at night I used to wonder whether turning the...
Oct1-11 06:24 PM
vk6kro
2 991
This will probably be a very basic question, but is the effect that gravity has on light, similar to the faraday...
Oct1-11 05:48 PM
mangaroosh
0 653
Hello everyone! After having being asked to help prepare a simulation(using computer programming), for the...
Oct1-11 11:49 AM
danielakkerma
11 1,592
Hi, I've tried to figure this out but I just can't! Please help me understand how to work it out??? A ballistic...
Oct1-11 01:40 AM
mitch_1211
3 2,084
If I draw a displacement-distance graph and a displacement-time for two wave forms, will both graphs look the same?...
Oct1-11 01:17 AM
Philip Wood
2 898
How close is this assumption to reality. Take for example a parallel plate capacitor with charge Q and -Q. Connect...
Oct1-11 12:55 AM
mitch_1211
1 926
I am totally lost about the idea of electric potential and work. sometimes the book defines work as negative and...
Sep30-11 11:12 PM
rcgldr
1 778
Because of the kinetic energy and frames of reference thread: http://www.physicsforums.com/showthread.php?t=534883...
Sep30-11 09:01 PM
rcgldr
0 939
hi, if i have a cylindrical rod of copper and i heat is at one end face while the other surface areas are open to...
Sep30-11 07:06 PM
gsal
2 4,790
Energy density of supercap is equal to square of it`s voltage. Is it possible to join together advantages of...
Sep30-11 01:07 PM
Stanley514
8 4,470

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