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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
168 190,818
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
ZapperZ
2 70,621
Hey! I just got this new electrostatic generator and I wanted to know if any of you guys have any cool experiments...
Jan18-06 12:15 PM
Danger
1 2,584
I can't figure out the correct explanation for this gedanken. 1) We have a room in deep space which is shielded...
Jan17-06 08:11 PM
DaleSpam
10 1,682
Hi Everybody, I am a newbie here at Physics forums. Physics is one of my favorite subjects. I have a doubt...
Jan17-06 04:15 PM
Meir Achuz
3 1,254
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 1,204
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 6,365
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 2,491
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 1,895
Hi do u know anything about fermi zones? I need some good articles to read about...
Jan15-06 09:25 AM
Kouros Khamoushi
6 1,636
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 3,007
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 2,323
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 6,369
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 1,496
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 1,654
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 1,104
Amusement park rides, espically roller coasters, atract thousands for their ability to let people experience "zero ...
Jan13-06 09:29 AM
DaveC426913
5 3,099
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
3 888
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 1,210
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 2,879
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 9,181
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 1,114
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 2,761
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 1,205
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 2,912
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 1,633
"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 1,751
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 1,192
What are the physics that deal with things like writing, painting, surgery, catching and all those things?
Jan8-06 04:30 PM
zoobyshoe
4 2,226
A very very general question: Can anyone explain the meaning of "gravity" in an intuitive sense?
Jan8-06 04:06 PM
Pengwuino
5 1,294
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 1,790
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 3,130
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
0 854
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 1,203
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 2,252
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 1,472
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 1,756
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 1,930
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 2,187
what exactly is photon? chemical , physical properties? how could they survivr insppeds of light?
Jan4-06 03:35 AM
spacetime
27 4,205
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 1,788

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