# Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
 Views: 12 Announcement: End of year contest, $75+$50 prize! Dec18-13 Meta Thread / Thread Starter Last Post Replies Views Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people... Apr22-11 06:26 AM ZapperZ 1 39,981 Trying to verify the general integral solution to Poisson's equation I reach the following contradiction, what am I... Nov30-07 06:23 AM jmb 10 8,732 Do photons in the form of visible light actually pass through ordinary window glass? I ask because window glass is... Jun21-05 06:27 PM Swampeast Mike 14 8,703 Hi, I didn't post this question in the Homework section as it is not home work and does not seem to fit with the... Feb20-09 11:04 PM mcvwi623 5 8,687 In space if a space craft in the absence of a gravitational field stopped using whatever propulsion system it was... Jun19-10 12:51 PM DaveC426913 10 8,655 1. How to attach my wheel, plastic lids with rubber bands around, and axle, a wooden dowel rod 5/8 in diameter, to the... Mar16-09 09:11 PM murrdpirate0 1 8,653 Can an object sinks in a liquid, but not to the bottom of the liquid, just to the middle? Can Archimedes principle... May21-06 05:20 PM disregardthat 9 8,651 In a Time article about global warming they say warm water expands, but water expands when it's frozen - is it both... Jan29-07 03:02 AM thetada 10 8,639 i'm having trouble distinguishing between magnetic flux and magnetic flux density...can someone please explain to me?... Jun11-10 03:47 PM MikeHansen 5 8,594 I know it's old already.. but this came up when I was lecturing my mom on the evil effects of urban myths and stuff..... Feb8-08 04:04 PM mgb_phys 11 8,590 I've been trying to learn the details of electromagnetic radiation from a hertzian dipole antenna, but all the... Jan21-09 10:56 PM turin 3 8,553 Can anyone tell me where the 4*pi comes from in coulomb's law? I know the law is often compared to netwon's law of... Dec28-07 08:04 PM rbj 7 8,542 «(...) a torque τ applied perpendicular to the axis of rotation, and therefore perpendicular to L, results in a motion... Mar1-06 04:32 PM panathi 8 8,540 For the free expansion of an ideal gas into an evacuated chamber, I know that Work=0 and Q=0. Correct? This implies... Dec6-04 07:14 AM Clausius2 5 8,534 If we are given B, how can we find A? I can fine the magnitude of A by: \int_{s'} \vec B \cdot d\vec{s'} = ... Oct20-11 04:33 AM vanhees71 24 8,515 please explain the concept of Torsion rigidity giving examples. Feb19-09 04:28 PM Dr.D 1 8,506 My professor just attempted to explain ionized hydrogen to us. She said that an ionized hydrogen atom is basically a... Sep30-10 08:28 PM Astronuc 17 8,505 Line Integrals ( 1 2 3 ... Last) :confused: I took multivariable calculus a while back. It was all fine until we got to line integrals and surface... Jan9-05 04:57 PM Cyrus 68 8,496 Dear all, i am a bit confused with a very simple equation connecting refractive index of water and its dielectric... Nov12-09 04:16 AM SHeck 4 8,469 As water is pulled into an opening by gravity, it begins to spin. Why does it spin? Apr21-08 02:34 AM kamerling 34 8,462 OK someoone on a different forum said his refrigerator is an 80 watt refrigerator (small lil college fridge). As in it... Apr12-05 11:47 PM russ_watters 4 8,461 Hey can neone tell me why this is so? I have not got the ans in any book i read... Thnx 4 replying Jun17-08 10:37 AM Count Iblis 8 8,457 Dear all, For my Ph.D research. I have to use the material derivative concept. I reviewed some of my previous... Dec12-07 12:00 PM momentum_waves 1 8,456 I have a question. Are the Icons on my desktop entities that follow mathematics of "classical" physics, or are they... Dec17-06 09:31 AM lightarrow 33 8,453 Hey. I have been working on a relative simple 2D physics engine for a game I am making, and as I was researching... Nov30-08 02:55 AM rcgldr 9 8,439 Hello frnds, i understand what conservative and non conservative force are but i didn't get it properly with practical... May3-12 07:39 AM Ravi Mandavi 4 8,432 I am programming a simple physics simulation and have been following along with some books about the subject. ... Sep22-07 03:08 PM AlephZero 1 8,428 what do we mean when we say that light wave suffers a phase change of \pi when it gets reflected and why does that... Nov13-10 05:50 PM ehild 6 8,425 a problem.....pls check.. imagine theres a horizontal planeA bove which the effects of gravity are not felt. any... Dec27-07 02:19 PM Himanshu 50 8,420 When a charge is applied to a conducting sphere and connected to another conducting sphere by an ideal thin wire... Oct24-07 08:02 PM cesiumfrog 5 8,420 mv squared ( 1 2) I believe it was Newton who first proposed kinetic energy as being proportional to mass times velocity. Liebniz... Apr13-07 09:38 PM Izzhov 20 8,416 What is the difference between eigenfriquency and normal mode? If, for example, I solve the secular equation (from the... Jul6-09 07:08 AM abid220 3 8,411 I'm reading through Feynman's lectures, and just read his demonstration that: a) a sphere generates the same gravity... Jan18-10 01:40 AM dhans 9 8,409 I was studying the Ideal gas properties of air. Among other properties like h, P_r, U, V_r I also found an S^o. What... Feb17-09 10:26 PM Darknes51986 4 8,409 Why does the charge on a conductor accumulate at sharp points? I've read one or two explanations, but I don't follow... May19-08 12:33 AM Shooting Star 10 8,401 Okay, im new so if what im talking about makes no sense, be easy...i dont really know if it belongs in classical... Mar27-09 12:20 AM Eidnar1 22 8,388 I was tutoring a student in an optics lesson the other day. We discussed the foundational concept, that light travels... May27-13 01:46 AM Rajashik 41 8,386 I was wondering how quickly a permanent magnet would loose its magnetism if it was constantly being used to do work,... Mar8-09 08:20 PM russ_watters 24 8,375 Hai, I have the following situation: I have a closed container with a certain gas at a certain... Feb9-05 06:14 AM Clausius2 9 8,365 1. When someone loops, and the person blocks, the ball goes out...if the ball really rides up the rubber, shouldn't it... Sep7-08 08:39 AM pingpongpaddy 10 8,346 Hi, I know that if you have a hollow sphere of some finite mass, when you place an object inside it, it experiences... Jun11-06 06:49 PM eep 32 8,342