# Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
 Meta Thread / Thread Starter Last Post Replies Views Views: 5,774 Announcement: Follow us on social media and spread the word about PF! Jan16-12 Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people... Apr22-11 05:26 AM ZapperZ 1 48,278 Hi guys, I'm trying to implement the enthalpy equation in C++ converting it from an excel macro I found on this... Sep16-08 11:49 AM Mike222 1 1,725 Hello, I have to learn about the classic Perturbation Theory. I'm looking for guides, text books etc about... Sep15-08 12:09 PM The-herod 2 1,120 I know it when I see it but what is the exact definition of a wave? what makes a wave a wave? Sep14-08 09:04 PM skydancer46 18 3,275 I'm just learning about linear momentum in classical mechanics and I have a question about it. I'm not sure I... Sep14-08 12:56 PM fluidistic 2 985 Hello people, In an AC circuit, how is RMS current and Mean current defined as? What is the practical meaning of... Sep14-08 03:28 AM Andrusko 1 1,348 Would it be possible for a symmetric axial vector torque to be equivalent to the shear stress of two uniform... Sep13-08 05:07 PM tiny-tim 1 2,511 Does anyone have the following book: "Problem Solving in Electromagnetics, Microwave Circuit, and Antenna Design... Sep13-08 02:35 PM fisico30 0 1,008 If two dielectric materials with dielectric constants k1 and k2 and thickness d1 and d2 are within two copper plates,... Sep13-08 12:58 AM atyy 6 2,454 Anyone can tell me why there is a -ve for the z= -r cot theta for the picture shown below? thanks! ... Sep12-08 11:36 PM Defennder 1 3,366 Wind turbines / hydroelectric turbines - I think the same fundamental Physics applies to my question. The fluid... Sep12-08 06:25 PM rcgldr 9 2,864 hi! I have a question regarding work done lifting an object vertically upwards, under water. I am aware that work... Sep12-08 06:02 PM Andy Resnick 7 3,499 I guess this question is very easy, but after it occurred to me, it has been torturing me for quite a while. I... Sep12-08 11:43 AM tiny-tim 6 2,002 May I know what does polarization direction for linearly polarized plane waves mean? In general, does the... Sep11-08 10:33 PM felicity87 2 1,975 Hi Suppose there is a system of N particles and a total energy of E. Now given energy eigenvalues of ε(n) = nhv ... Sep11-08 10:10 PM qbslug 0 1,237 I was wondering why manufacturers only makes these anti-theft systems send out a frequency of 58 kHz. Is there... Sep11-08 03:12 PM Zilfarion 2 1,195 what is the effect of a magnetic field on a electron? please with equations Sep11-08 01:47 PM Doc Al 1 693 The problem gives me a mass at the top of an inclined track. the track is not linear but curved and the bottom of the... Sep11-08 01:46 PM lightning208 2 1,080 I was asked this recently and the only explanation I could come up with was that the Earth is oblate and the... Sep11-08 04:11 AM D H 2 2,239 In one dimentional cases, will the velocity of a particle tend to the terminal velocity unregardless of any... Sep11-08 02:12 AM Lucien1011 2 1,331 Follow the below four steps to amuse yourself 1) Take a semicircular wire. You know that its COM is at (0,2R/\pi).... Sep10-08 08:08 PM matematikawan 5 2,410 A magnet surrounded by copper wire spins generating a A/C current down a wire for as long as it spins. Are electrons... Sep10-08 08:06 PM russ_watters 9 1,519 I was learning a bit of centrifugal/centripetal forces, and then I asked myself. If at the equator, the Earth rotates... Sep10-08 07:26 PM matematikawan 5 19,971 I am currently a grad student. Part of my PhD work will be to formulate a mathematical model of a manufacturing... Sep10-08 02:22 PM engineer23 0 2,300 I'm driven crazy by this question these days. so here it goes. Consider a ball sliding on a frictionless surface with... Sep10-08 09:20 AM atyy 15 2,275 i've been trying to get the exact definition of a banked angle but so far, i've gotten nothing so i would like... Sep9-08 10:29 PM Antenna Guy 1 2,043 Start with: $\frac{d}{dt}$ $\frac{dL}{dx"}$ = $\frac{dL}{dx}$ (d/dt)(dL/dx") = (dL/dx) Now intruduce three... Sep9-08 08:44 PM alejandrito29 0 676 how can we say that torque is equal to power / angular velocity though we know that torque is equl to I x (change of... Sep9-08 04:53 PM russ_watters 4 6,175 We may say a process is adiabatic if it occurs fast enough such that no heat is exchanged from the system.But we also... Sep9-08 09:14 AM Count Iblis 4 3,278 The relation between the angles for which the minima occurs for a Fraunhofer diffraction(parallel rays, large... Sep9-08 07:15 AM Antenna Guy 8 1,916 I'm a biochemistry major entering my junior year. After completing the requisite general physics course, I found that... Sep9-08 12:35 AM atyy 4 5,069 Hi, I have read that Thermal Conductivity means: “The thermal conductivity of a substance is the quantity of heat... Sep8-08 09:38 PM Kasper_NYC 1 1,981 Please help me to know moment, moment of inertia (mass,area,polar) and difference between them. How can we obtain... Sep8-08 08:50 PM sri.karmarkar 0 547 Not sure if this is the right place to ask this, but why is the average shear rate in a cylinder 2/3rds the shear rate... Sep8-08 06:49 PM physics_forums 0 1,208 I'm a new teacher to E&M and confess I was a lowly Chemistry Major who needs some help. A proton and a particle of... Sep8-08 01:23 PM clem 6 3,061 according to the figure attached below , do we have a coriolis acceleration on the slider and why ? why cant we... Sep8-08 11:35 AM firavia 1 827 Here is simple counter example to 2nd law of thermodynamics - converting heat into work. Everything is in vacuum,... Sep8-08 09:19 AM Constructe 12 1,793 In a 300kv electrical power line the electrons must be in a conduction band. How does that correlate with work... Sep8-08 03:57 AM carbrook 0 1,365 What is the classical microscopic mechanism for absorption of EM waves? Consider a free charge isolated in the... Sep7-08 08:38 PM cesiumfrog 15 2,064 The D (displacement) vector has only the free charges as source. I heard it is better to work with D than E, because... Sep7-08 04:09 PM Andy Resnick 12 1,602 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 07:39 AM pingpongpaddy 10 9,141