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Aug12-14 11:12 PM Simon Bridge 
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Jan16-12 Greg Bernhardt
The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...
May6-14 04:32 AM
Cthugha
168 190,924
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
ZapperZ
2 70,661
Sometimes when I am driving I make myself the following questions. Why do the front windscreen of cars steam up?...
Aug27-04 08:55 PM
relativelyslow
14 2,164
Water is a dipole right? Having a slightly positive side and a negative side. If this is true, then won't water...
Apr30-03 06:25 PM
Alexander
10 1,466
Anyone know an equation for comparing water absorption by plotted plants vs. evaporation of the water collecting in...
Nov21-13 11:12 AM
Chockful
4 766
HVAC man here, still tinkering with humidification. Trying to get a baseline on the rate of evaporation of...
Jan24-11 03:39 PM
tinkeringone
0 2,189
Hello , I was thinking about dams and hydroelectrostations , the turbines can turn because the water before the dam is...
Dec2-13 08:32 AM
Crazymechanic
13 844
*** * Water & TOE *** Water is not H20... What does that mean to Theory of Everything (TOE)?
Dec1-03 09:54 AM
kx21
6 2,811
Before I start, let me say that I am hugely skeptical but we do have an issue where finding a good hitting water well...
May26-11 02:25 PM
mrspeedybob
1 1,556
Is it possible to predict the future state of a system without using time as a factor?
Nov22-03 12:09 PM
jcsd
5 1,441
If the universe was hotter in the past, it was more chaotic and disordered with all the molecules and particles...
Oct5-11 10:56 AM
dschlink
4 1,208
After going up in the mountains where i live i started getting annoyed at how washboard the roads were. Logging trucks...
Mar30-04 10:45 PM
zedex
4 2,017
was wondering what set c to its speed ?
Jul3-04 04:43 PM
FZ+
7 723
I posted this first in Astronomy but it belongs in General Physics. With a little research, anyone can convince...
Sep11-12 05:18 PM
russ_watters
29 4,132
Hello, In classical EM, would one have said that red light carries less energy than blue light? (if both have the...
Dec4-10 03:58 PM
Redbelly98
8 1,621
I read that the determining factor of a Black Hole being created is when the mass of an object divided by its radius...
Apr18-04 06:20 AM
LURCH
4 1,735
Ok guys, first of all I apologize if this question is not worded correctly, is in the wrong section, and for any other...
Oct17-12 09:50 AM
mfb
1 580
If a beam of electrons pass through a plane where the potental energy abruptly increases but not enough to classically...
Jul3-05 11:49 PM
box
2 1,038
I was just wondering, does anyone have any proof whether or not Eintein was autistic? ...
Jun14-04 08:04 AM
selfAdjoint
14 3,541
Please, take a look at the last paragraph of the New York Times article about a 14 year old polymath then read the...
Mar19-04 07:51 AM
Integral
37 4,306
There's not much info on engineering physics. I've read quite a lot of posts about people that loved physics but chose...
Mar10-11 09:58 AM
tamtam402
3 3,909
Dear Physics Forum community. Please allow me tro preface the following by stating that I am a novice to the...
Apr24-11 05:17 AM
Filip Larsen
17 1,768
I love Star trek and I was thinking, how to create a warp drive. I have read a discusion about EM waves on this...
Jan10-09 02:28 PM
Math Jeans
24 3,311
Hello. I have got one interesting question for you. Imagine that you are driving a car down the hill. What is the...
Jan19-13 09:42 PM
Sylvia Else
8 927
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
OldHubcap
7 9,376
I assume this is the correct forum for this question... :P This is the idea: we have a hollow object (probably a...
Jul31-11 07:01 AM
AlephZero
1 837
Consider a hot potatoe. Will it cool faster or slower when we blow the warm air coming from our lungs or if we let it...
Mar21-05 09:34 AM
Chi Meson
1 712
Im not sure why the learning materials section is blocked for me to post in, however: I am stuck between these books:...
Aug3-10 05:23 AM
Livethefire
2 1,022
Im going to the Nobel-lectures in december and I wonder if anyone can recomend som good books or web-sites about...
Oct17-03 03:20 AM
antevante
0 1,587
The formula for no. of images by two mirrors inclined at $ angle is -1 ...
Sep29-04 03:10 PM
Tide
5 1,284
Hi, Been looking for someone to help with a project I'm running. Only a few weeks of work at this stage, paid at...
Mar26-06 04:00 AM
brodders
0 893
Hi, Been looking for someone to help with a project I'm running. Only a few weeks of work at this stage, paid at...
Nov4-06 03:28 PM
brodders
0 764
February 20, 2008 Hello, I am currently working through a copy of _The Physics of Time Reversal_ by Sachs....
Feb27-08 05:00 AM
Chris H. Fleming
4 1,314
Well, at the first excuse my poor english.... I would somebody to give me the time equation in the relativity. Ie,...
Apr18-03 03:10 PM
pi-70679
4 1,359
Hello I want to suspend, or really have the sinking effect be slow, different kinds of rocks/ gem stones in a jar....
Sep27-13 03:45 PM
M Quack
11 2,486
Hi All, I have a Master's in Physics from a US university. I am looking for an advisor in the field of Strings or...
Apr8-08 05:01 AM
WC
0 1,138
OK, Basically, I am interested in studying quantum phenomena, specifically in a method that mimics the development of...
Aug18-07 05:00 AM
janiefar@gmail.com
4 1,341
i want to use a 100 cm diameter piston witch will have 4000 kg of pressure on it. Questions -how thick does the...
Jun29-13 10:42 AM
victor2006
3 660
im in 9th grade going into tenth and i have read very briefly of some physics and have found it to be very...
Jun4-12 04:01 AM
Cbray
5 2,070
All I have read in the electricity class is that AC is any type of current which actually reverses its directions...
Nov25-13 07:09 PM
Okefenokee
24 1,801
Hey, I need to know the effect ( capillary rise) due to different materials on capillary action. Also, what is...
Dec22-12 11:57 AM
Evo
4 1,006
Dear All I need some information from you guys. I have readings from acceleration sensors i.e. Acceleration along...
Mar1-11 05:03 AM
faisalzia84
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