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Aug12-14 11:12 PM Simon Bridge 
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Aug14-14 03:46 PM DrDanny 
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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
168 189,865
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
ZapperZ
2 70,304
This question has not rendered any respons at all in the forum for Astronomy & Cosmology. Maybe it is more relevant in...
Jan17-06 02:38 PM
rbj
4 1,199
We're all familiar to the fact that when you for example put two fingers together, they aren't really physically...
Jan17-06 02:15 PM
plusaf
6 6,348
I've been trying to wrap my mind around how a balance works, and I come up with a question I need help with... If you...
Jan17-06 10:23 AM
Chaos Pariah
4 2,484
As you know wi-fi is a radio signal and i'm wondering if physics can help me by determining why is my internet acting...
Jan16-06 06:43 PM
berkeman
9 1,883
Hi do u know anything about fermi zones? I need some good articles to read about...
Jan15-06 09:25 AM
Kouros Khamoushi
6 1,635
I have a question regarding triboluminescence that I was hoping someone could help me with. Late last night, in the...
Jan15-06 07:46 AM
Astronuc
3 2,992
Hi everyone. I have a question that my friends and I have debated for several years. I think I'm right and everyone...
Jan14-06 11:12 PM
pervect
18 2,315
Assuming a typical white-light focusing flashlight (e.g, Mag-Lite) with a parabolic reflector focused to produce a...
Jan14-06 10:15 PM
joema
10 6,348
ok, i have forgotten my thermodynamics, and need a confirmation for my thoughts here... if youd compress He gas...
Jan14-06 06:07 AM
fargoth
2 1,493
Hey guys and girls, Just letting you know some of the work that a few people here at IMEC have been working on....
Jan13-06 05:26 PM
Danger
3 1,647
I was in a car on a rainy day and saw that the drops on the window were sliding down the window at about 45 deg. , I...
Jan13-06 09:38 AM
DaveC426913
2 1,102
Amusement park rides, espically roller coasters, atract thousands for their ability to let people experience "zero ...
Jan13-06 09:29 AM
DaveC426913
5 3,090
Yesterday in my physics lesson we were covering electromagnetism and my teacher mentioned the speed of light in a...
Jan12-06 10:09 PM
zoobyshoe
3 887
I know the half life period property of a radioactive element. At present I also studied the half life principle of...
Jan12-06 05:00 PM
HallsofIvy
10 1,203
Hello This is a section from a textbook... "an ampere is defined as that current in each of 2 infintely long...
Jan11-06 11:48 PM
vanesch
27 2,874
In e=mc^2, why is c squared? The (mc) isn't squared, right? Please don't be insulted by the remedialness of...
Jan11-06 11:23 PM
bernhard.rothenstein
9 9,161
Would it be possible or practical to access the electric potential of wind-generated sand static in the desert?
Jan11-06 07:09 PM
Danger
1 1,112
I'm curious about how very small forces are actually measured in the lab. I read somewhere that a dyne, for instance,...
Jan10-06 02:38 PM
zoobyshoe
6 2,754
The theory is that sound is heard because of fluctuations in the air molecules that surround us but why is that we can...
Jan10-06 02:13 PM
krab
8 1,560
Hello! What is the real idea behind -kx? is X really the displacement of "relaxed" state and "compressed" state?...
Jan10-06 09:09 AM
zoobyshoe
7 1,203
I know terminal velocity is when the upward force is equal to the gravitational pull, but is that only in free fall?...
Jan10-06 03:24 AM
rcgldr
11 2,882
Hi. I'm having some trouble trying to grasp a concept. I know that mathmatically Force perpendicular to motion is...
Jan10-06 02:31 AM
rcgldr
6 1,625
"In physics, for a given gravitational field and a given position, the escape velocity is the minimum speed an object...
Jan10-06 02:23 AM
rcgldr
12 1,748
entropy must go up right? so if you had a room full of hydrogen, would it eventually fusion into hot iron?
Jan9-06 11:23 PM
Michael_McGovern
6 1,185
What are the physics that deal with things like writing, painting, surgery, catching and all those things?
Jan8-06 04:30 PM
zoobyshoe
4 2,219
A very very general question: Can anyone explain the meaning of "gravity" in an intuitive sense?
Jan8-06 04:06 PM
Pengwuino
5 1,292
hi I was just thinking at school we learnt that a current running through a coil of wires with a iron core produces...
Jan8-06 01:33 AM
zoobyshoe
10 1,786
According to the laws of Conservation of Energy, there can be no such thing as a perpetuum mobile of any kind. The...
Jan7-06 04:00 PM
Mattara
13 3,123
We have unusual story over in S&D that is probably best left there for now, but comments from our physics experts...
Jan6-06 05:49 PM
Ivan Seeking
0 853
Okay deuterium consists of 1 proton and 1 neutron and tritium consists of 2 protons and 1 neutron, now if one atom of...
Jan5-06 03:46 PM
vincentm
8 1,199
Hello all Never occured to me until a friend made fun of me for not knowing how a TAP and a vaccum cleaner works....
Jan5-06 02:46 PM
krab
16 2,242
Hi all, I was wondering what would happen if one had a whole lot of nothing, and he would try to compress that. So,...
Jan5-06 09:16 AM
.:JimmY:.
10 1,460
What happens to the light in my room when I turn off the light switch? Where does it go? All I can think of is...
Jan5-06 01:56 AM
Mk
17 1,752
Hi all, I hope you had great holidays so far. I was looking for three exciting third year level experiments. I...
Jan4-06 10:06 AM
fleon
1 1,920
They Say Photons Move In The Velocity Nearly Equal To Light .... If A Body Approaches Velocity Of Light The Mass...
Jan4-06 03:50 AM
spacetime
7 2,177
what exactly is photon? chemical , physical properties? how could they survivr insppeds of light?
Jan4-06 03:35 AM
spacetime
27 4,188
I have a question that hours of internet research have not answered. I noticed that, for example, when I am holding a...
Jan3-06 10:21 PM
Mk
4 1,779
Do low energy lightwaves have photons? I assume they do, but is there some way to detect them. I understand high...
Jan3-06 04:08 AM
SpaceTiger
3 2,130
Short version: Is there any physical reason why a sunset should look different than a sunrise? The only differences...
Jan2-06 08:26 AM
Astronuc
3 22,054
What is mean by harmonics in SHM?
Jan2-06 08:24 AM
Astronuc
1 1,121

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