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May25-09 10:31 AM ZapperZ 

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General Physics

- Nature and properties of matter and energy. For any physics topics not applicable to the categories below.
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The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...
Apr8-14 10:13 AM
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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
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I was just thinking if big bangs in other universes are created by collision of other universes and merging then...
Aug12-05 07:45 PM
5 5,492
Stolen shamelessly - and then subjected to the indignities of paraphrasing - I'm taknig a thread from Whitestar and...
Aug12-05 06:28 PM
15 2,780
Hi, I need the paper E N da C Andrade et al 1937 Proc. Phys. Soc. 49 381-391 "The velocity-distribution in a...
Aug12-05 05:20 AM
25 1,907
Does the humidity in the air affect the density??? and how does it affect? thanks
Aug12-05 04:03 AM
7 3,019
I've heard of fire balls caused by lighting that float around for a while and can pass through a window. what are...
Aug11-05 11:17 PM
9 1,569
I was wondering somewhat randomly, and pointlessly about the nature of light beams and how ordinary light sources emit...
Aug11-05 08:41 PM
Claude Bile
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To put an object into orbit just above the Earth's surface, it would need to tavel at roughly 8000 meters per second...
Aug11-05 07:48 PM
10 1,365
Hello! Here is something though that has been haunting me recently. If lights from two different sources meet and...
Aug11-05 11:23 AM
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Is "Effects of UV Rays' a good topic in research?
Aug10-05 10:47 PM
Claude Bile
7 1,376
Is Gravity the same if an object is motion less compared to an object traveling at a high speed...say close to the...
Aug10-05 03:35 PM
2 958
If we are to remove mass from a bicycle, does it have a better effect to remove this mass from the tires instead of...
Aug10-05 12:58 PM
6 1,183
Hello, I am new, so sorry if this is in the wrong thread, if it is please move it. But anyways, I was wondering if...
Aug10-05 02:21 AM
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Hi.thanks about my question on focal were really helpful.Another question now about Field of view. I know...
Aug9-05 09:03 PM
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to calculate the moment of inertia of a spinning disc (a spinning top for example) i know the formula is I=(mR^2)/2,...
Aug9-05 06:19 AM
7 1,520
hi i want to know at what angles aeroplenes move left and rights please if there is any equations related to this...
Aug9-05 01:17 AM
5 1,541
I have a question about EMPs now, i think i have made them before as i was experimenting with magents a while back...
Aug8-05 07:30 AM
2 942
you have a balance with 1kg weight in each 1 meter long arm when its horizontal each 10 N force * 1 m long will...
Aug8-05 06:50 AM
5 2,357
Lately I've gotten an interest in physics. Theoretical Physics in particular, string theory, parallel universes,...
Aug7-05 08:16 PM
8 1,075
when you walk the reaction of your thrust is the earth going very slightly in the other sense but how can an ice...
Aug7-05 03:25 AM
6 1,188
my question is as follows: when do we need to consider a three dimension body as a point like body in our...
Aug6-05 11:00 AM
5 944
I had a physics lesson at school lately and i stated that by looking at the stars we are looking back in time because...
Aug6-05 10:59 AM
10 2,713
Considering Gravity is the warping of space, then how is gravitational waves possible? Aren't we all sliding down the...
Aug6-05 09:20 AM
30 1,843
Why do people always use the misleading term 'escape velocity'? If I had a rocket whose engines provided a thrust...
Aug6-05 05:57 AM
15 2,284
Hey, I'm a high school student who is currently taking college level physics. Does anybody know of a good reference...
Aug5-05 11:21 PM
9 7,606
what if you cuold go back in time? :smile:
Aug5-05 05:27 AM
2 1,394
Not sure if this should have gone in help but here goes. I'm doing some background reading into the subject covered...
Aug4-05 08:10 PM
Claude Bile
3 1,670
What is so special about a glass prism that a beam of light disperses after passing through it but not an ordinary...
Aug4-05 07:46 PM
Claude Bile
3 4,210
I found the book stimulated many questions for me. In particular, if you were moving away from the earth at near...
Aug4-05 03:49 PM
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I always thougth the "dotted lines" illustrating the direction of a magnetic field were only a tool for vizualizing...
Aug4-05 01:43 PM
1 1,157
I was wondering if anyone is able to tell me how a photocell works and why results for voltage versus current change...
Aug4-05 04:20 AM
2 1,389
what will be the colour appearance of the sea on earth?
Aug4-05 03:40 AM
2 4,376
If you have two hurricane fans, and place them one after another, both blowing the same direction, will the air from...
Aug3-05 11:35 PM
4 1,594
Hi everyone, who knows where to find a good introduction into adjustment of optical components, like making sure...
Aug3-05 07:12 PM
Claude Bile
7 1,287
A friend of mine just got a new washing machine. In its manual it states "cold water rinses do not wring out the...
Aug3-05 01:33 PM
7 8,751
Can someone explain the phenomenon of total internal reflection?
Aug3-05 11:39 AM
Doc Al
1 1,426 I cannot begin to estimate the love affair I will have with this site. ...
Aug2-05 09:46 AM
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Hey there, does anyone know where I could find a list of Legendre Polynomials? I need them of the order 15 and above,...
Aug1-05 09:11 PM
5 3,185
Hello everyone... I'm looking for the following paper: 142: 29369p Nonlinear Optical Properties of Mixed...
Aug1-05 06:26 PM
2 1,032
Hi .I am reall y confused about the focal length of lens.i understand that it is the length from the lens to the point...
Aug1-05 06:11 PM
3 2,036
i have some questions regrading to "how to updrage my microscope?" i'll be very thankfull for any kind of reply... I...
Aug1-05 05:59 PM
1 1,187

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