# 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: 2,413 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 47,870 I am going to be simulating damped driven oscillators for my project and I was wondering if someone could give me a... Jan28-13 01:06 PM great_sushi 3 665 What is the difference between Generalised co-ordinates and Degrees of freedom in classical mechanics? I know that... Jan28-13 10:43 AM Aniket1 9 911 There is a problem about precession in general that I am trying to understand, and it can be exampled by electron... Jan28-13 09:56 AM Nemanja989 15 901 Period does not depend on amplitude. Correct? I deduced this from the equations for simple harmonic motion: ... Jan28-13 07:45 AM G01 1 710 I've rencently been thinking about several systems related to fluid mechanics, and I've asked myself the following... Jan28-13 06:15 AM Chestermiller 7 1,568 An object (a tin can for example) orbiting the Sun at about the same distance as the Earth would be what temperature? Jan28-13 05:36 AM mrspeedybob 2 600 So I noticed that when learning about Liouville's Theorem in class, that it was described in terms of ensemble: i.e;... Jan27-13 09:21 PM nrivera1 0 506 We know that the Young's modulus of an object is defined as the ratio between its stress and strain: Y = σ/ε ,... Jan27-13 06:48 PM FredericChopin 5 7,469 http://i.imgur.com/YkaYsq3.gif Hello. I need help clearing up who's gaining potential energy and who's losing... Jan27-13 05:55 PM rainstom07 0 771 Hi, I am trying to derive a formula for the path taken of a body in a Gravitational Field using Classical... Jan27-13 03:41 PM VVS 10 863 I have a problem which got me thinking, but I'm unable to solve to my satisfaction. The problem involves a gyro... Jan27-13 09:46 AM Ryoko 9 1,280 Hi, I don't understand this: You got a dipole, and a resulting electric field from it like this(hyperphysics):... Jan27-13 08:23 AM stevendaryl 3 857 My book says: \frac{\partial V}{\partial s}\frac{ds}{dt}=-\frac{1}{\rho}\frac{dP}{ds}-g\frac{dz}{ds} (1.28)... Jan27-13 08:02 AM Studiot 1 586 Can anyone explain point 44 of the attached pdf document on surface tension. (Here's the link in case attachment... Jan27-13 07:06 AM andrien 1 542 As the title suggests, there is a practical in which we have to find mass of the spring (m*) having a block of mass M... Jan27-13 07:01 AM andrien 1 477 Hey! Yesterday I was on the Czech Physics Olympiad. There were many examples. To one, however, I did not invent... Jan26-13 08:01 PM Simon Bridge 1 407 Im having a discusion reguarding what temperature (celsius) supercooled water needs to be if it was to freeze... Jan26-13 05:38 PM Spinnor 4 560 I understand that for a fixed massflow the minimum amount of power required to generate a thrust is: P = Massflow * ∫v... Jan26-13 05:05 PM sophiecentaur 14 1,710 Suppose we are far from a 1000 watt source of constant radio frequency electric dipole radiation, say R/λ > 1000.... Jan26-13 03:51 PM Spinnor 0 387 Do you know chemtrails? http://en.wikipedia.org/wiki/Chemtrail_conspiracy_theory I want know more about it! Please,... Jan26-13 01:52 PM bigfooted 2 445 Hi, In the equation y(x,t) = ym * sin(kx - wt - PHI) I thought I understand why we have that phase constant... Jan26-13 01:35 PM Philip Wood 1 468 So I did this lab: http://www.physics.ryerson.ca/sites/default/files/u11/exp/exppcs125/SHM.pdf Essentially, we have... Jan26-13 01:29 PM vanhees71 9 1,280 Their equations are identical. Is there any difference between the two? Jan26-13 12:41 PM Studiot 4 1,717 I vaguely read about this idea about using particle accelerators as hyperdrives Does anyone know any more... Jan26-13 09:00 AM GreenAce92 4 482 I came across a rather confusing topic about Work Energy Theorem and Potential Energy applied in lifting a particle.I... Jan26-13 04:26 AM mihirviveka 7 1,464 I often see the EM Hamiltonian written as $$H=\frac1{2m}\left(\vec p-\frac ec\vec A\right)^2+e\phi,$$ but this... Jan26-13 03:49 AM vanhees71 4 674 Hello, just had a quick silly question about the coulomb gauge here, though I guess it applies for gauge... Jan26-13 02:00 AM vanhees71 1 661 Hi I recently purchased a small (15mmx15mm) Peltier Thermoelectric Cooler/Heater. I am using this for a prototype of... Jan25-13 11:52 PM Bobbywhy 1 565 i am currently reading griffith's book on electrodynamics, though he does an excellent job with the theory (along with... Jan25-13 11:09 PM bigerst 0 390 Okay, question, do I live in a smaller world than people with normal eyes? I noticed that when you look over your... Jan25-13 10:31 PM DiracPool 9 1,051 Hi, I am wondering why microwaves don't escape through the door? The most common answer seems to be that the... Jan25-13 07:02 PM Drakkith 18 1,742 A question my friend gave me the other day: If I start humming a constant note and, once 1/2 a wavelength exits my... Jan25-13 06:04 PM sophiecentaur 4 478 Hi, I am designing a device which has cameras need to see through a sheet of glass at angle very low, near zero.... Jan25-13 04:01 AM mickybob 2 656 Let us denote by X^i=(1,\vec 0) the Killing vector and by u^i(s) a tangent vector of a geodesic, where s is some... Jan24-13 11:02 PM WannabeNewton 3 1,055 Stirling engine: the cycle is composed by two isothermals and 2 isometrica and there are just two heat reservoirs. ... Jan24-13 12:03 PM Studiot 24 2,515 I am curious if someone can help be estimate heat sinking and dissipation in an Aluminum structure? What I am trying... Jan24-13 08:57 AM CWatters 3 891 Hello, I was recently pulsing a coil at fairly high voltages (200-600VDC) using DC squarewave, at fairly high... Jan24-13 06:35 AM DeepCut 13 1,069 I'm just uncertain (haha), what IS newton's Second law exactly? F=ma, or F=dp/dt, aren't these defining equations for... Jan24-13 06:21 AM Jano L. 12 1,686 Hello all, is there a way to calculate the width of a waveguide required (slab and ribbed) made of silicon with... Jan24-13 04:09 AM ooe 0 576 Hello, I am currently making a video game and have run into a bit of a physics problem. I have taken two semesters... Jan24-13 01:57 AM drfrev 11 948

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