# 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: 5,731 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 48,275 The situation is as such. you have a magnetic passing through a loop(loop 1)of wire as some time t, say you also have... May31-14 02:18 AM Delta² 5 304 we have an inversed pendulum(ignore the car) http://csd.newcastle.edu.au/simulations/cart.gif and we choose the... May30-14 06:35 PM Andrax 3 260 Hello experts! I am looking for the proof of the following equation:... May30-14 06:22 PM jasonRF 7 479 The position equation for a oscillator undergoing critical damping is given by x(t) = Ate^(-γt) + Be^(-γt) where... May30-14 10:18 AM vanhees71 1 194 As the spring semester is over and the summer is now beginning I was thinking that I would like to get a start on... May30-14 10:16 AM hideelo 6 225 I'm reading Lanczos: 'The variational Principles of Mechanics'. I need help resolving a paradox - which is probably... May30-14 04:17 AM Philip Wood 50 1,460 Lately I have been thinking about the conservation of linear momentum, and there are two cases that I can think of... May29-14 05:36 PM DaleSpam 18 451 Hi, I having been looking on the internet and other threads and can't seem to find any detailed information on how a... May29-14 05:10 PM UltrafastPED 10 260 Hello experts! I wonder if there are any disadvantagês of Stêp Indêx Fibêr? I searched for my knowledge but only... May29-14 05:02 PM UltrafastPED 8 254 I was just doing a read-through of my freshman griffith's electrodynamics textbook ( I found my comprehension of... May29-14 03:35 PM Jano L. 3 318 Hey PF, my book either got sloppy in a derivation or I am not connecting two very obvious dots. It gives the energy... May29-14 09:12 AM D H 2 240 Hello guys, Iam doing a project to find the tension of timing belt using a dial gauge indicator,but i can't find a... May29-14 07:43 AM CWatters 4 336 So what if we have two thick lenses? Thanks in advance , May29-14 06:46 AM UltrafastPED 1 198 Why change of magnetic flux with the time through a coil induces current in it? Please tell me that what happen to... May29-14 05:01 AM siddharth5129 5 299 Hey, I don't if this is the right place to ask ( it is not a homework question but just a curious one about what i... May29-14 03:06 AM siddharth5129 7 280 This question is about push bikes, but could be applied to anything with a versatile engine and a gearing mechanism. ... May29-14 01:39 AM A.T. 3 246 Hello, Im a student and I try to design a valve connected to a tank. However I have some troubles to define the... May28-14 06:53 PM Chestermiller 1 209 Hello, I need some help understanding Bernoulli's principle, flow rate, velocity and pressure. I understand... May28-14 11:27 AM siddharth5129 3 457 Hi I am new to this forum. I am an amateur blacksmith/machinist/all around tinkerer. I took a class with a... May28-14 07:33 AM Nugatory 4 247 When thinking of a spherical shaped particle moving about under Brownian motion, one describes its motion by... May28-14 07:11 AM Steve Drake 2 239 Initially the pings from Malaysian airlines flight MH370 could only determine the distance of the aircraft from the... May27-14 10:39 PM nsaspook 29 2,271 I am going through Mary Boas' "Mathematical Methods in the Physical Sciences 3rd Ed". I finished the chapter 3... May27-14 08:43 PM kq6up 4 259 I was wondering how could I hold a lot of charge inside, for example, a ball. I thought by wrapping it in an isolant... May27-14 08:34 PM UltrafastPED 1 223 Hi, I am trying to resolve a force into xyz components and I think I'm getting a bit confused. When viewed face on... May27-14 07:03 PM LukaD 4 224 I was solving a static electricity/electric field problem and I came across with one saying earth has an electric... May27-14 04:56 PM sophiecentaur 7 426 Hello there, I have a problem that I've been trying to solve for some time now and I find myself struggling. I am... May27-14 03:56 PM mattt 1 184 I am aware that when charged particles accelerate or decelerate, the particle will emit a certain amount of radiation.... May27-14 02:05 PM Prince Rilian 2 204 What is the smallest amount of electricity (volts, amps?) required in order to create a magnet capable of spinning a... May26-14 05:21 PM TheAzn 2 236 Both of these represent waves moving in the $+x$ direction. I have seen both used in Howard Georgi's book on waves and... May26-14 03:51 PM 122520253025 6 361 My question is simple: Why do batteries need electrolytes? Wouldn't the battery need the charge to flow only through... May26-14 02:36 AM DrDu 3 350 Hi, have searched around but can't find what im looking for (probably because im not entirely certain what its called)... May25-14 02:09 PM Jorriss 5 348 I read that Jones matrices can descibe optical devices with polarized light. They are 2 by 2 matrices.A basis can be... May25-14 01:37 PM UltrafastPED 5 332 Hello, I have been self-learning Thermodynamics and I am having a bit of trouble with calculating the work in... May25-14 09:20 AM dauto 4 279 I have tried to search everywhere, but cannot find answer to this: does anyone know if there is a table etc. of what... May25-14 08:46 AM Simon Bridge 1 194 Yeah sure, change in speed of light as it travels from one medium to another. But why does it affect the path? I mean,... May25-14 06:16 AM Manraj singh 17 627 Let's say I have a magnetic ball within a solenoid that has current passing through it. How would I calculate the... May24-14 10:19 PM Integrated 4 286 So I'm not OK with how some people derive this equation. These people consider a pipe whose endings have... May24-14 05:25 PM rcgldr 20 607 how much energy is gained by an electron in a battery? May24-14 04:14 PM jtbell 4 286 I saw an example of a hypothetical EM wave that had constant E and B fields. Is that possible? How would it be... May24-14 09:15 AM vanhees71 11 511 When a wire has current I in a magnetic field B, there is the Lorentz force is it considered a conservative force or... May24-14 09:07 AM vanhees71 30 887