# Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
 Views: 8,393 Announcement: Two free ways to get Gold Membership! Jan17-12 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 41,141 Hi everyone Please note: It is not a homework-type question. I haven't got springs in my course. Suppose we have... Jun15-07 10:26 PM rewebster 6 3,758 There is a u-tube which its diameter on the left hand side is smaller than the right hand side. It is filled with... Jun15-07 01:49 PM Doc Al 8 4,386 I'm studying Lagrangian Dynamics using a Schaum's Outline. This book seems to assume that the student can easily set... Jun15-07 12:05 PM sach1tb 31 17,361 Hi, I am trying to understand this equation where the coulombic operator is given by J = \int d\tau \phi(2)... Jun15-07 04:36 AM Jack111 3 1,047 It is just a mere question...Can we write the solution of wave equation as f=g? Jun14-07 10:52 AM monilmodi 2 2,569 Dear physics gurus, A couple of years ago I saw a TV program on physics, in it there was an classical physics... Jun13-07 08:19 AM CraigD 1 1,729 This is an applied physics problem. A droplet of water sits on a horizontal surface. A large horizontal surface... Jun12-07 10:03 PM CT_Scientist 0 1,637 Kindly give me a link to where I can study vectors A-Z Jun12-07 06:54 PM mathman 1 1,032 Can anyone clearly say what is the difference between plane of polarization and plane of vibration? I know what is... Jun12-07 01:03 AM Claude Bile 1 701 The standard book used in our university proves the Kirchoff's law of radiation in an elaborate manner...I understand... Jun11-07 12:07 PM neelakash 0 1,666 Noise cancellation through interference; I guess most people here know what I am talking about. My question is:... Jun11-07 02:36 AM Jallu 13 2,536 i heard that a faraday cage is often used in shielding e.g. sensitive electrical equipment. I was just wondering,... Jun10-07 12:17 PM Jack111 14 3,555 I was just reading through stuff about Newtonian gravitation and this question popped up in my head and I can't answer... Jun10-07 08:35 AM pervect 9 1,335 Hello everyone. I'm reading Goldstein's Classical Mechanics (2nd Ed) and I have worked out the derivation of... Jun10-07 03:50 AM maverick280857 4 4,353 Is there any unconventional method to find out the relation between group velocity and phase velocity? know there is a... Jun9-07 06:28 PM Meir Achuz 3 13,129 I heard that two flat conducting parallel plates have the property that electric field at any point between them, is... Jun9-07 01:08 PM smallphi 4 1,361 i only joined this site to post this thing... now today at school (im in gr 10 by the way) a gym teacher came up to me... Jun8-07 09:06 PM cesiumfrog 2 3,213 A little bit of confusion: Is it not correct to write ▼. E=ρ/ε0 inside a dielectric body. As far as I know we... Jun8-07 11:53 AM ZapperZ 5 874 we know that $\Delta U$ $=$ $\Delta K_{cm}$ $+$ $\Delta I$ where $\Delta K_{cm}$ is the kinetic energy from cm frame... Jun8-07 06:18 AM pardesi 10 1,934 I cant seem to demonstrate that in anisotropic materials the permittivity matrix is symmetric, apparently this is done... Jun7-07 04:47 PM Meir Achuz 1 2,184 Well I was just looking out in the sky one thundering night and was just wondering whar is the cause of the flashy... Jun7-07 09:35 AM DaveC426913 2 1,564 G'day, I was just wondering what the difference was between a Maxwell(M) distribution and a Maxwell-Boltzmann(MB)... Jun7-07 04:33 AM Astronuc 1 6,204 Without an atmosphere, the earth's average surface temperature would be -18 C. The moon's surface temperature... Jun5-07 11:37 PM tony873004 9 6,623 Firstly, this isn't my homework question. I was trying to answer another, broader question for a student, and it... Jun5-07 07:40 PM Worzo 3 1,907 Does a hydrogen baloon ascend faster than a helium baloon? Ignoring the weight of the baloon fabric, and ignoring... Jun5-07 04:04 PM rcgldr 4 2,895 im thinking of the classic airplane problem. the one where the flying airplane develops a voltage across its wingspan.... Jun5-07 09:06 AM ice109 1 1,205 Hello, First time post here, so if I violate some rules of protocol etc. please forgive and let me know! Anyway,... Jun5-07 07:49 AM nickmacias 2 1,533 The Maxwell's relation in electromagnetic theory states that refractive index is equal to the square root over the... Jun5-07 01:59 AM lalbatros 4 1,852 http://www.youtube.com/watch?v=KgKxsX5XZNc a baseball is fired out of the back of a truck going 60mph at 60mph Jun5-07 01:46 AM rcgldr 1 4,389 So from what I understand, right handed circularly polarized light has angular momentum +1, left handed circularly... Jun4-07 09:26 PM Claude Bile 22 2,970 I need to turn this Lagrangian in one that is not explicitly dependent on time. L = \frac{\alpha}{2} (q^\prime +... Jun4-07 07:20 PM Mentz114 1 1,669 I've heard of non-Newtonian liquids (and seen them on tv for entertainment value). I also hear that they keep refering... Jun4-07 11:59 AM siddharth 2 11,552 I guess I do have to ask some questions on magnet storage. Especially over long periods of time. Basically, I want to... Jun3-07 08:34 AM Meir Achuz 1 4,390 How would I calculate the temperature of a theoretical heat-emitting body wrapped in insulation? If the... Jun3-07 05:08 AM tonyjeffs 2 3,839 It is a mechanics discussion regarding a problem of electrostatics. Couple of months ago I dealt with a... Jun2-07 11:09 PM neelakash 8 1,093 hmm just a topic for discussion..im revising for an exam and i found an old paper asking to find rms values of... Jun2-07 08:14 PM ice109 5 1,304 ok so the picture I get in my head is: if I took a wave, and stretched it so that it was a straight line, the phase... Jun2-07 04:06 PM cepheid 10 1,470 There is a model devised by Newton to predict the difference in the height of the tides (as observed from the earth)... Jun2-07 11:48 AM neelakash 2 1,731 When I got a stick with opposite electric charges on both ends ( a macroscopic dipole) and start slowly spinning it, I... Jun1-07 02:10 PM Meir Achuz 2 880 Hello, My girlfriend asked me this question - how far from earth do you have to be before you don't really feel any... Jun1-07 04:57 AM nalA 5 2,136