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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
1 48,282
One way to solve the simple LC circuit with 1 inductor and 1 capacitor is to use the Lagrangian formulation of...
Aug30-14 07:04 AM
3 245
Hey guys can someone please give me a good explanation on why in an RC circuit the resistor voltage is leading the...
Aug30-14 06:51 AM
5 196
Wikipedia claims that the Chandler wobble (a deviation of the angular velocity vector of the Earth with respect to the...
Aug30-14 04:32 AM
2 248
Dear Experts, When we launch a satellite, we launch it from earth which is spinning, so the tangential velocity...
Aug30-14 03:35 AM
10 255
Could anyone please explain or advice me where to read about principles of Schlieren image formation NOT in terms of...
Aug29-14 09:19 PM
Steve Drake
1 177
Hello Forum, The numerical aperture NA of a lens is usually a parameter (adimensional) that indicates the lens...
Aug29-14 06:20 PM
1 161
So I'm looking at the hessian of the Newtonian potential: \partial^2\phi / \partial x_i \partial x_j Using the...
Aug29-14 05:15 PM
2 166
I guess we all know laser beams. I wonder if we can make beams in the microwave frequency range and how the beam width...
Aug29-14 05:05 AM
3 185
Let's say there is two tubes(cylinders with no tops or bottoms) with charges ##q_1## and ##q_2##, radii ##b_1## and...
Aug29-14 04:52 AM
3 225
Ok small bit of a problem which I have been experiencing. I am using an industrial size plasma oven by advance...
Aug28-14 10:04 PM
Greg Bernhardt
1 292
Is a standing wave actually a traveling wave appearing to be still do to interference of two different waves? If...
Aug28-14 03:23 PM
15 392
I attached a picture with 3 questions? My first question is, I know that for a convex or concave mirror, If I...
Aug28-14 03:03 PM
9 236
I need to work out the liters per hour from the diagram I have attached. There are no motors/pumps involved just...
Aug28-14 10:59 AM
7 173
How can life be compatible with the second law of thermodynamics? Here is how. Life is a self-organized system. A...
Aug28-14 10:57 AM
1 166
A rope is wrapped around a pole with one end attached to a large object and the other end pulled with a tension T. ...
Aug28-14 06:27 AM
3 194
I am programming an addon for a space game/simulation (Kerbal Space Program) and I am looking for some help with a bit...
Aug28-14 03:07 AM
7 233
The only force really considered in classical mechanics is gravity. And yet, we often have problems involving...
Aug27-14 11:35 PM
2 218
For the classic Lenz law demonstration using a neo. magnet dropped down a copper pipe, is the magnetic force generated...
Aug27-14 04:52 PM
Philip Wood
11 903
I came across this article was incredibly interested. I've read the paper and the material was completely over my...
Aug27-14 01:55 PM
1 182
Hi PhysicsForums, I was wondering if this youtube was a correct representation of a photon traveling through space...
Aug27-14 12:18 PM
6 282
Hello, I am at present analyzing the electromagnetic interaction of a layer of paritcles in air when illuminated...
Aug27-14 10:53 AM
0 146
Many of you are familiar with the catapult launched profile fuselage gliders that are sold in hobby stores. Since...
Aug27-14 06:04 AM
16 1,093
In almost every textbook I have seen, pressure is said to be one of the most important state variables of a...
Aug26-14 06:11 PM
9 234
Hi Guys! I have a, rather general, question regarding the nature of magnet repulsion. When two opposite poled...
Aug26-14 05:29 PM
2 149
According to d'Alembert's Principle, the virtual work done by constraint forces must be zero. I have a few things...
Aug26-14 04:26 PM
Greg Bernhardt
1 276
Hello everyone, I was recently creating two different types of plasma for a Science Fair, one created from ionised...
Aug26-14 10:37 AM
Simon Bridge
7 278
Hi all, I'm new to the forums (in posting at least!). I recently graduated with a B.S. in Applied Physics, and have...
Aug26-14 08:49 AM
Andy Resnick
9 348
Hello PF'ers, Why is it that two light-bulbs produce twice as much brightness as a single light-bulb would? If we...
Aug26-14 08:24 AM
4 227
I want to construct 5 sided dice in the shape of a square-based pyramid. When rolled, I want the die to have equal...
Aug25-14 09:09 PM
12 405
hi, I'm a student and i have an electromagnet and a bar magnet paced head on coaxially and i want to calculate the...
Aug25-14 07:16 PM
Meir Achuz
32 893
I cannot seem to visualize how this compression and rarefaction occurs for example when I clap my hands, I know I move...
Aug25-14 07:09 PM
4 233
Hey! I need to calculate the electric field on the axis of a circular plate of radius a with the following charge...
Aug25-14 03:24 PM
2 162
Hello, I am having trouble understanding collision frequency in following discussion from Kubo,...
Aug25-14 08:46 AM
2 142
Hello, I am a PhD student in chemistry, and need to determine the pressure of a reaction to be carried out I...
Aug24-14 11:32 PM
5 244
I am having trouble wrapping my head around the idea of a piston/cylinder type arrangement where the piston has a...
Aug24-14 05:54 PM
7 289
I know that delta h(Enthalpy) is heat and it is also the total kinetic energy of the system. Temperature is the...
Aug24-14 02:13 PM
Andrew Mason
11 438
While deriving lagrangian equation using D'Alembert's principle, in Goldstien, they defined a variable called "virtual...
Aug24-14 10:08 AM
1 229
My question relates to entropy generation in a closed system ΔS=dQrev/T for a reversible process ΔS=dQ/T + Sgen for...
Aug24-14 09:54 AM
12 280
Just read in Taylor that in general the kinetic energy can depend on position as well as velocity. I believe him, but...
Aug24-14 09:47 AM
9 339
How magnetic field associate with mass........ from the experiment we know that this is due to electric charge........
Aug24-14 06:39 AM
3 268

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