# 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: 2,168 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 47,841 Hi All, This is part solution, part request for peer review. I wasn't able to find a model for the motion of a... Aug3-13 07:31 AM mfb 3 861 for RF, how does this mechanism work? http://i.imgur.com/Crx4Amx.png how does the conductor do this? and why... Jul31-13 10:45 AM Enigman 9 853 Rusty on the math... I am working on a problem and need the derivation of a free fall trajectory for an object at... Jul29-13 03:06 PM Creator 8 695 I've been told (since high school I think) that "view angle" in a 2-dimensional plane is approximately (distance to... Jul29-13 08:03 AM Andy Resnick 6 1,370 The potential due to a polorized distribution is given by: V( \vec{r}) = \frac{1}{4 \pi \epsilon _{0}} \int _{V}... Jul29-13 03:45 PM DrDu 20 1,021 In this video at 7:15 you see a rifle fired underwater: cp5gdUHFGIQ Apparently even before the bullet leaves the... Jul31-13 10:07 AM A.T. 20 1,506 I am not sure I get the concept of centrifugal force.. If we have a stone tied to a thread and we just spin it in a... Jul30-13 12:03 AM DaleSpam 35 2,098 How to find the linear dispersion of a Direct Vision Prism with given parameters? Jul29-13 10:46 PM itsnaresh 0 338 Hi guys, After reading a paper about electron scattering, I became very interested. So if an electron is... Jul30-13 10:02 PM Simon Bridge 6 599 Hi All! I've been doing some research in an attempt to uncover the proportionality between usable traction, which is... Jul29-13 06:08 PM tduell 2 518 Hello everybody! I read that if one of the two materials involved in Snell's law is a conductor, the refraction angle... Jul31-13 05:41 AM EmilyRuck 10 908 Does any body here have any information about gravitational vortex power plant..? Jul31-13 11:22 AM Drakkith 7 749 Good afternoon all My question is, when we observe stationary waves, and we know that at a certain point, the sound... Jul29-13 03:58 AM Bobbywhy 1 647 How exactly would you describe the principle of a valve for flow control? In a globe valve for example the fluid... Jul30-13 04:28 AM gmax137 5 749 Hi all, I notice the patterns such as v = 0.5at^2 and PE(spring)=0.5kx^2, etc...but, all examples I have seen show... Jul29-13 10:08 PM PhanthomJay 4 453 I think everybody here knows the equation that gives the potential of a point like dipole, but how does the field look... Jul30-13 02:03 AM DrDu 1 385 What's the difference between cold moving air and hot moving air? For instance, suppose you put two fans, of the... Aug1-13 11:18 AM russ_watters 11 959 Hi All, I'm having a bit of trouble remember basic physics and hoping someone can help If i've got the wrong... Jul29-13 08:50 PM basil4j 0 387 Batters swear that batting gloves improve their performance. From a physics standpoint, why is this? My impression... Jul29-13 10:09 PM Simon Bridge 1 349 Hi PhysicsForums. I have a question. I was looking through a manual for an industrial grade PC, which is fanless,... Jul30-13 02:31 AM 256bits 2 417 http://en.wikipedia.org/wiki/Gradient#Cylindrical_and_spherical_coordinates which formula do we apply to get the... Jul31-13 06:37 AM igorronaldo 4 537 The following are Maxwell's Relations right? \left(\frac{\partial s}{\partial v}\right)_{T} = \left(\frac{\partial... Jul30-13 09:15 AM jtbell 1 419 I am trying to study the motion of a falling body in the earth’s gravitational field however not assuming a constant... Jul31-13 02:43 AM rcgldr 10 542 Hello forum. I am finding it hard to wrap my mind around the concept of power when considering forces. We can... Jul31-13 11:29 AM Drakkith 3 674 So, I was wondering if a conducting loop was placed in orbit around the Earth would it be able to generate a current? Jul30-13 10:24 PM Simon Bridge 1 777 Hi all, Any ideas how to solve this integral?  \int_{0}^{\pi}... Jul30-13 08:18 PM klawlor419 2 490 I am a little confused about the Mermin-Wagner theorem, and the assumptions it makes, and I would like to better... Aug3-13 08:54 PM king vitamin 4 1,138 Trying to get my head around something with the Darcy Weisbach. It is used to calculate the head loss of a moving... Jul31-13 06:57 PM SteamKing 1 552 Good evening, I've been trying to wrap my head around this problem for some time and I just can't seem to get it... Aug2-13 07:41 AM MrsTMouse 7 948 Hi all, I have a simple circuit with a battery, resistor, and finally, the capacitor. Am I correct in saying... Aug1-13 03:11 PM technician 3 896 Please watch 05:00 to 08:00 http://www.youtube.com/watch?v=jbmFcGhTnS0 Force = Mass x Acceleration So for... Aug1-13 08:13 AM DaleSpam 30 1,853 I'm curious what models there are for calculating the Electric Susceptibility in crystalline solids and any books that... Aug1-13 01:56 AM DrDu 1 531 Newton's law of universal gravitation states that every point mass in the universe attracts every other point mass... Aug3-13 06:36 AM technician 14 1,604 Hi, After reading several resources about work and energy, I am confused about the conditions that should be... Aug1-13 05:33 PM Jano L. 1 796 I am wondering about why the electric field in a hollow sphere with charges on its surface would be zero. I have... Aug4-13 12:43 AM triphenylamine 13 1,749 So at my gym, there's a cable machine that works like this: You pull on one cable and you lift x mass using y force. ... Aug2-13 04:56 AM A.T. 1 642 When a positive point charge q is brought close to a neutral conducting spherical shell then negative charges will be... Aug3-13 10:59 AM vanhees71 4 518 I have a project to build a well insulated cylindrical vessel approx 220 cm in diameter and 125 cm in depth. Like a... Aug3-13 01:39 AM Terry998 0 424 I have so far encountered the notion 'state' in classical mechanics, thermodynamics and quantum mechanics. I have,... Aug3-13 04:36 PM Jolb 1 318 Hi does anybody here know whether there already exists a theory that describe Mie scattering for spheres that have... Aug3-13 06:07 PM mfb 5 386