# Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
 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 05:26 AM ZapperZ 1 41,758 What I mean by the title is, why isn't it more popular? (I know there DO exist some hydrogen powered cars.) To me... Dec1-13 03:30 AM CWatters 26 6,039 Hello, Here's my challenge: I want a physics model for how one would go about in order to decay the moon's orbit.... Dec2-13 09:45 AM BruceW 10 1,066 I've noticed that electromagnetic field lines are very similar to stereographic projection of 3D sphere on 2D surface.... Nov26-13 05:15 PM Jano L. 2 880 Hi, please could someone help explain how magnetic flux works in Faraday's law as I struggle with electromagnetism. ... Dec1-13 02:07 PM tiny-tim 6 461 Hello, I have an issue with the problem below. I have a series connection of two variable capacitances C_{1}(t)... Nov2-13 12:30 PM Barloud 2 383 I'm working on my engineering capstone design and part of our design requires a code we have written to calculate the... Nov5-13 10:22 AM voko 3 530 Hi All, I would like to know why the neon lamp is used to measure electrical polarity. What is the working... Dec7-13 08:29 AM TumblingDice 4 552 Who can provide a physical understanding to this solution to the 3D periodic Navier-Stokes equation:... Dec2-13 06:07 PM SteamKing 2 518 Consider a capacitor with 4 parallel plates and 3 dielectric insulators arranged like this...+I-I+I- The insulator... Dec2-13 04:38 AM sophiecentaur 17 1,039 In chapter 5, magnetostatics, of Griffiths' Introduction to Electrodynamics (third edition), there's a problem in the... Nov27-13 12:26 PM Philip Wood 3 711 Hi guys, I've got a doubt concerning to the minimum mechanical work and the work-energy theorem. Consider the... Nov27-13 03:06 PM dapias09 2 506 I know how this formula is made, but surely Δs becomes highly inaccurate for large values of Δθ and r? In fact when... Nov26-13 06:55 PM DaleSpam 13 535 Hi, I recently became acquainted with foam sleeving as a material for forming a resonant cavity via this link:... Nov27-13 03:16 PM AlephZero 2 390 What can a gaussmeter tell me about a metal? I am just experimenting with various metal disc samples by setting them... Nov26-13 11:42 PM tempneff 0 355 In the figure attached, we have one section which has three bars all pin-connected together and pin fixed on the... Nov27-13 06:03 PM sophiecentaur 4 429 For example, let's say there was an block infinitely long in the x and y direction and in the z direction bounded by... Nov29-13 05:54 PM Simon Bridge 3 377 From my understanding, surface plasmons (SPs) are oscillations of electrons caused by incident EM waves. A photon... Nov29-13 01:07 AM DrDu 3 388 This question is just about a thought I was having. If a 1 kg object which is at rest is made to accelerate with a... Nov28-13 05:01 PM FieldvForce 20 450 in class, we just learned that the chemical potential was μ=∂G/∂N i'm looking in my book and it says that... Nov28-13 04:12 AM DrDu 3 330 osmotic pressure is the pressure difference between two solutions of different solute concentrations separated by a... Nov28-13 12:54 PM sophiecentaur 4 385 I am having a hard time proving this to myself: Given some object with a known inertial moment and center of mass,... Nov28-13 10:07 PM PBear 9 622 Should it be added to the Cauchy stress to calculate a "total stress", or it doesn't have such a physical... Dec2-13 09:18 AM Andy Resnick 2 566 Hello Everybody, Span efficiency factor appears in the lifting-line theory of Prandtl describing Lift and vortex... Dec1-13 01:03 AM rcgldr 11 997 Recently I have been troubled by several things which have been stated in my school physics classes, mainly concerning... Nov29-13 04:57 PM BruceW 30 1,509 Refer to the second diagram on this website http://electron6.phys.utk.edu/optics421/modules/m5/Interferometers.htm ... Nov28-13 08:42 PM Simon Bridge 1 309 Hi everyone I had this very silly question pop up that unfortunately I cannot find an answer to myself. If an... Nov29-13 01:28 PM rcgldr 17 555 I am a little confused with this subject. If you have a mass hanging from a spring, there is a specific equilibrium... Nov28-13 06:54 PM TumblingDice 4 446 In other words, why are ice cubes trays shaped like the left-hand figure instead of the right-hand one? ... Dec1-13 03:33 AM CWatters 9 540 is the boltzmann factor the probability of a particular state of a system? can someone explain the partition... Nov30-13 01:28 PM stevendaryl 10 542 Hi, i´m reading Landau´s mechanics and in the 4th chapter in the part disintegration of particles (16) i can´t... Nov30-13 05:44 PM Simon Bridge 3 445 Hello. In my textbook by Jose Saletan called Classical Dynamics: A Contemporary Approach the author talks about TQ,... Nov29-13 06:18 PM mjordan2nd 8 359 Hi guys, I'm studying the Kinetic Theory of gases from Pauli's book Vol. 3. Here he describes a section on the Mean... Dec1-13 08:52 PM Simon Bridge 7 523 hi :) ... Dec1-13 04:52 PM Nikitin 4 445 Hi Folks: I'm pondering teaching torque and having students build mobiles as part of that. I started wondering if I... Dec1-13 03:41 PM Simon Bridge 6 576 Hello, I am not completely certain why in thermodynamics, it seems that everything is done as a partial derivative,... Dec2-13 08:35 AM WannabeNewton 2 386 There is a battery connected to a non ideal circular conductor wire. What is the specific mechanism by which one... Dec7-13 03:41 PM jartsa 18 750 $${\rho}({\lambda}) d{\lambda}=E({\lambda})*f({E(\lambda}))*D({\lambda})d{\lambda}$$ $${\rho}({\lambda}) d{\lambda}$$... Dec7-13 05:47 PM Outrageous 2 372 I'm doing battle with someone in a debate and I need some help here as, perhaps, I'm not articulating my side well or... Dec7-13 12:08 PM sophiecentaur 7 512 My question is the following: In field theory, if I have a constraint \chi(q_a, p_a, \partial_i q_a) that depends... Dec7-13 06:19 AM Bobhawke 0 304 I have a tortoise shell sitting in two parts on my desk (the top and the bottom). I somehow got it in my head that it... Dec7-13 09:35 AM Nick O 0 428

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