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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
ZapperZ
1 46,693
is there a certain physical thing that you can see with your naked eyes, but it doesn´t exists anymore.
Jul1-08 07:54 PM
russ_watters
5 1,671
A bit of a problem. My book teaches me that E = -(dV/dx), where E is the electric field strength, V is the electric...
Jul1-08 04:24 PM
granpa
7 19,461
An object of a mass "m" is held stationary on an incline plane at an angle "theta" by means of a rope attached to it. ...
Jul1-08 02:51 PM
Doc Al
1 2,308
Hello, below are some specs I was provided of a micro screw air compressor, its physical dimensions are 4x4x4 and it...
Jul1-08 11:47 AM
rolinger
3 3,301
I have some questions about electric field inside a conductor. In fact, if a neutral conductor is placed within a...
Jul1-08 08:00 AM
Domenicaccio
8 1,611
In a few chemistry books/resources I've seen the Bohr model of the atom is developed equating the electrostatic force...
Jul1-08 03:23 AM
Hootenanny
5 4,344
We were having tea with the family and my brother and I started wondering if holding the cup will help in cooling the...
Jul1-08 02:17 AM
Borek
8 2,343
Hey, does anyone have an equation that roughly models atmospheric density from sea level to about 200 km up?
Jun30-08 11:23 PM
nucleus
5 11,938
If two objects of equal mass are dropped....one from h1 and the other fro h2.....will they hit the ground with the...
Jun30-08 11:17 PM
gamesguru
3 1,882
My experience is that because a lighter bowling ball can be thrown faster, the force that the ball has is altered. ...
Jun30-08 09:57 PM
hage567
31 3,048
When there is destructive interference I know that two waves that are out of phase cancel out, but what really goes...
Jun30-08 04:24 PM
Quantom
2 1,373
Hi: In electromagnetism, Maxwell equations originally were 6, with the aid of vector analysis, these...
Jun30-08 11:54 AM
ismaili
1 1,564
Newton's law of universal gravitation is only valid for point masses. Is it just chance that a person on the earth...
Jun29-08 10:25 PM
gamesguru
5 2,737
http://www.newscientist.com/channel/fundamentals/mg19826614.400-physicists-atomsorting-demon-created-with-lasers.html?f...
Jun29-08 08:05 PM
cristo
10 1,517
A program created for my 3rd term physics project in the spring of 2006. This program simulates elastic collisions of...
Jun29-08 11:32 AM
Tonynazzal
0 2,108
I've developed a lens that is a cross between a modified hele-shaw cell and a modified etalon. My experiments with a...
Jun29-08 09:04 AM
frankhar
1 1,086
Prompted by D H's post on inertial forces … … I've just read the fascinating wikipedia article on Fictitious Force....
Jun29-08 04:37 AM
tiny-tim
0 955
(No, not homework) This struck me by curiosity. What applications could supercooling possibly have? :confused:
Jun28-08 09:16 PM
mgb_phys
2 2,311
Has nanotechnology had any success in mechanically separating "cold" atoms from "hot" ones, an application first...
Jun28-08 10:36 AM
thirdwind
1 960
We have a hollow spherical pendulum that is filled with water. The sphere has a hole under it. If it starts to...
Jun28-08 05:31 AM
Hootenanny
9 3,163
So...I wanna solve the problem where two masses on springs collide into eachother on a frictionless surface. The two...
Jun27-08 12:32 PM
tiny-tim
4 1,236
So, I'm a mathematics major about to start my third year. I decided to pick up a physics minor (I've only had the...
Jun27-08 12:19 PM
Jacobpm64
3 4,939
What happens when the NET force on a massless body is 0. I mean what will be the acceleration , if any? Also if we...
Jun27-08 10:37 AM
Redbelly98
16 2,395
Hey everyone, Can you justify this: The total energy of a thin spherical shell is the sum of its "self" energy and...
Jun27-08 10:12 AM
aniketp
5 1,052
I started working on a few "Babylon 5" related physics problems involving angular motion. It is easy to come up with...
Jun26-08 11:49 PM
Xezlec
1 2,506
Hello! I wonder if anyone can give me some quick advice. I'm designing a physically small (but high current)...
Jun26-08 11:31 AM
pzlded
5 5,194
Hi all. My teacher briefly mentioned brownian motion a few days ago but didn't really go in depth. I am planning to do...
Jun26-08 11:10 AM
thirdwind
2 1,690
I am trying to understand the origin of the following expression for the reaction field (dipole \mu in spherical...
Jun26-08 09:57 AM
joseph12
0 1,258
Hi, I have heard that temperature is not a mechanical variable. That is, that even if you knew the positions and...
Jun26-08 08:17 AM
Andy Resnick
2 1,730
Well I read in a book that: \DeltaG= RTln (K) (Where K is the eqm const) H "K" is not necessarily dimensionless so...
Jun26-08 07:59 AM
Mapes
3 1,279
I have a strange question and have internet-wide not found answers: An ideal pendulum hanging straight down gets a...
Jun26-08 07:10 AM
Doc Al
5 1,942
Im a little fuzzy on the difference between the two. If you look at the attached picture, if that force stays with...
Jun26-08 05:15 AM
Doc Al
4 26,629
In source free case the Maxwell equation are \partial_{\mu}F^{\mu \nu}=0;\,\,\partial_{\mu}\tilde{F}^{\mu \nu}=0...
Jun25-08 07:37 AM
arroy_0205
1 3,296
Sorry, but while going through the article on magnetism in wikipedia I read the following which i couldn't not catch...
Jun25-08 12:26 AM
fedaykin
44 21,380
hello, i'm trying to learn statistical mechanics with feynman's book he seems to have a lot of times where he thinks...
Jun24-08 01:54 PM
bubbloy
0 4,159
So i have been delving into the realm of electrodynamics for the first time in an independent study that i'm doing but...
Jun24-08 05:58 AM
pzlded
5 4,036
I was just wondering how these amazing engineering feats support the loads on their wings? Specifically the larger...
Jun24-08 01:37 AM
russ_watters
9 9,834
What happens when you sandwich an uncharged capacitor between two charged capacitors? 1. Just as a piece of...
Jun23-08 07:48 PM
pzlded
34 5,973
hey what does everyone know/estimate one of those three man giant elastic water ballon launchers has as its k constant...
Jun23-08 04:36 PM
rcgldr
2 4,140
I just saw this article about a skyscraper stabilizing ball:...
Jun23-08 05:56 AM
Borek
1 2,669

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