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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
1 41,753
Hello, I have found a nice popularisation text on general relativity. It ends with a puzzle that I like very much....
Mar28-09 10:33 PM
8 2,646
Does conservation of energy apply to magnetism? and Do magnets ever "wear" out. Do they ever lose their...
Mar11-09 06:01 PM
Bob S
8 2,061
Guys check this, its really interesting. Lets imaging a charge attached to a spring of charge q and mass m, and...
Mar24-09 05:49 PM
8 2,629
We all know you create E&M waves by spinning a dipole. Wether it's an AC current in an antena to produce radio waves,...
Nov23-08 08:19 PM
Antenna Guy
8 1,069
On a standard pulley, on one end of the rope hangs a mass equal to a person's weight. That person is climbing up on...
Nov23-08 07:34 PM
Doc Al
8 1,951
Why doesnt electric current flow in a circuit when a capacitor is fully charged? I mean there is still the battery...
Nov29-08 03:30 AM
8 1,257
In most physics books, they pass over drag problems because of their difficulty. However, I had to do one for a...
Dec4-08 02:01 AM
8 1,914
People often explain this by saying that dark colours are good absorbers of radiation (compared to white). But in...
Dec7-08 10:16 AM
8 2,601
Hi All, I'm trying to figure out how to model a rolling ball in the x y plane. I've started with the basic...
Dec7-08 08:15 AM
8 2,366
Hi All, This point was raised by a professor friend of mine, in an examination for entering MsC on science...
Dec18-08 02:54 PM
8 871
Suppose I have an engine of some kind that, for the purposes of simplification, creates a constant force regardless of...
Dec19-08 02:51 PM
8 1,749
Why don't ice cubes spontaneously form in a cup of water? Someone was explaining to me that for ice cubes to...
Jan29-09 12:37 AM
8 2,234
Is this derivation correct? I managed to derive v = r \omega and (I think) a = \omega^2 r. I did a^2 =...
Mar4-09 09:12 PM
8 11,054
Hi, I've wondered if there is a possibility to create a Faraday's cage with a metallic Slinky instead of using a...
Jan23-09 05:13 PM
8 1,846
Hi...I would very much appreciate thermo help. I am using software that requires enthalpy data to be in units of...
Jan29-09 04:41 PM
8 3,454
The Wikipedia says “On 17 November 1947 John Bardeen and Walter Brattain observed that when electrical contacts were...
Feb16-09 05:49 AM
8 1,628
Hi, I am a new PE member. I am not a physicist but would appreciate any and all assistance offered. I am...
Feb14-09 09:24 AM
8 4,111
Here's a question I've been thinking about for a long time. I can't figure out the answer. How do you calculate the...
Feb14-09 07:46 PM
8 1,119
Hi, Hopefully I'm posting in the right section of the forum. I want to find out how the velocity-time graph (or any...
Feb17-09 07:05 PM
8 4,139 According to my text book, the magnetic field of a toroid,...
Mar6-09 05:05 PM
8 4,653
Hey, I've been running into a bunch of lighting and sound techs that keep trying to tell me that leaving power cable...
Mar20-09 01:22 PM
Bob S
8 2,422
I first asked this question with much less detail in the recent thread about the Abraham-Lorentz formula but it was...
Mar20-09 03:39 PM
8 2,246
Hey all, I'm new to this forums. My question is this, I've been learning about projectiles and I came across a...
Mar22-09 09:48 AM
8 4,607
Can someone please explain to me whether the potential energy of a rocket increases as it accelerates and moves...
Mar21-09 05:32 AM
8 1,642
Hi, I am going to teach a class of year 9 students on the topic "Thermal Properties of Matter" and the concept of...
Mar26-09 05:53 PM
Cantab Morgan
8 1,386
Does anyone knows how to explain (both physics and mathematics) why there's no magnetic mono-pole?
Mar30-09 02:15 PM
8 956
Why in telescopes and microscopes the ocular distance is such that it creates virtual images instead of ...
Nov30-11 09:11 AM
8 3,408
I know the mathematical and geometrical reason, but does there exist a physical interpretation behind this? Thanks...
Nov11-11 11:58 AM
8 2,555
If you've ever taken a bicycle wheel off, held it with both hands on either side of the axle and try to lean it side...
Dec8-11 09:10 AM
8 1,595
I think understand the concept of the "method of images" to describe a conductor. The conductor has to be an...
Nov17-11 10:06 AM
8 2,134
Suppose a case where two masses are essentially far away form all other bodies so that we can assume the two masses...
Nov24-11 06:41 AM
8 2,217
Assuming an electron accelerator is firing electrons at a designated location to generate current. Is it possible to...
Nov23-11 12:00 PM
8 1,060
Brief description of problem: two independently-suspended platforms of equal mass are subjected to an intervening EM...
Nov25-11 05:15 PM
8 1,371 I'm thinking about how this sphere would...
Nov29-11 10:46 AM
Ken G
8 1,525
Dear Forum, the aperture stop AS is one the apertures (not necessarily the smallest one) in an optical system. the...
Dec5-11 06:59 AM
8 1,569
I don't really understand the math of these things, so maybe one of you could help me. :) Answer any of these...
Dec4-11 12:40 PM
8 1,335
Why is polarization in dielectric material linearly proportional to the E-field. T.y.
Dec7-11 02:28 AM
8 1,351
How can I measure the chemical potential of a gas (not necessarily ideal), using calorimetry alone? I mean, without...
Dec16-11 01:08 PM
8 2,237
I have a question. If you have two light beams of different frequencies, would you observe interference fringes?
Dec22-11 02:51 PM
8 2,052
Hi All, During my study of thermodynamics these days I have a little confusion regarding the concept of...
Dec28-11 12:52 AM
8 818

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