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Aug12-14 11:12 PM Simon Bridge 
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Y 02:46 PM nsaspook 
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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
168 190,795
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
ZapperZ
2 70,606
<edited. Pls remove this thread. Wrong place to ask homework Qns>
T 05:29 AM
kukumaluboy
0 20
Throughout my life, most of the things I've learned have come naturally, and seem to commit to memory without the need...
T 05:22 AM
mal4mac
6 161
Hey, guys, I have just watced a fantastic animation of the microscopic process of sound wave traveling, in which model...
T 04:25 AM
voko
13 217
Hi, I'm looking for an in-depth guide/tutorial about how to use and understand SI notation. As it stands, I've...
T 03:54 AM
f95toli
4 81
Hi. I have a question about the Holographic Principle. I've been looking up things about it for a while now, and I...
Y 08:44 PM
cosmik debris
4 229
Can someone please tell me the name of the theory describing the interaction of photons with charged particles eg...
Y 08:09 PM
Matterwave
13 320
Since it does have an electric field, if we were to put a positive test charge near it, would it exhibit an inward...
Y 08:00 PM
Matterwave
1 140
Hello , firs of all I know that every magnet has two poles ad the field lines exit one pole and enter into the other ,...
Y 04:59 PM
mfb
4 351
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Hello, Suppose we have an electric circuit consists of a battery and 2 wires connected to both ends of the battery....
Y 03:52 PM
sophiecentaur
8 259
I watched a lot of videos and read a lot of articles regarding the orbit of the earth around the sun and I just did...
Y 03:41 PM
sophiecentaur
23 543
In physics, I know that all of these terms are used. I need to brush up on my physics and I plan to study during my...
Y 03:04 PM
russ_watters
12 299
I beg forgiveness if this should be in chemistry; to me it seems more of a physics problem. This summer I had two...
Y 01:58 PM
enorbet
5 225
We all know that energy is required for exerting a pull or push on anything. The amount of energy exerted is...
Y 10:47 AM
Doc Al
3 218
In a purely capacitive ac circuit, we get, Im = Vm*ω*C, ....(1) Where, Im = Amplitude of the current Vm =...
Y 10:04 AM
maheshshenoy
2 160
Hello! From a data set of F-x measurements of a single dsDNA molecule I want to calculate the persistence length P...
Y 09:17 AM
pen
2 235
In a closed loop when we apply an applied force on an object the object starts at point A and stops at point A. ...
Y 08:01 AM
ehild
6 195
I saw this on Wikipedia http://en.wikipedia.org/wiki/Electromagnetic_absorption_by_water...
Aug30-14 09:19 PM
Simon Bridge
3 200
As many people know, you can use electrical energy to create magnetism (electromagnets) and you can use permanent...
Aug30-14 08:58 PM
shushi_boi
3 242
Wikipedia states that "In the vis-viva equation the mass m of the orbiting body (e.g., a spacecraft) is taken to be...
Aug30-14 03:34 PM
TurtleMeister
3 271
I was just wondering, are there any waves that can pass through the human body in a straight line, without being...
Aug30-14 02:42 PM
mfb
6 261
Hi all, I am studying for the MCAT and a section in the book lists the equations dT= IR dP=QR dV=iR For...
Aug30-14 02:41 PM
bobrsanchez
2 152
I am trying to experimentally derive the drag equation. I have dropped coffee filters with varying masses and...
Aug30-14 02:28 PM
CWatters
8 176
Lagrangian mechanics, as you know, is very useful in today's physics. But there is a point that I can't understand....
Aug30-14 01:22 PM
robphy
7 324
I have some confusion about how blockages result in the laminar/turbulent flow of fluids in pipes. From my...
Aug30-14 12:05 PM
jabotabek
3 232
Beginner and first time poster here so be gentle! First off, I understand the main difference is that one is an...
Aug30-14 10:43 AM
Javiatrix
14 389
Hi people, I just found out that the famous Feynman Lectures on Physics are now online, so I'm going through them...
Aug30-14 09:52 AM
WannabeNewton
2 196
I was teaching myself standing wave's chapter. It is said in the book that when plucking in the center of the string,...
Aug30-14 06:50 AM
Jackson Lee
4 246
how can we find damping constant from graph of amplitude versus time?
Aug30-14 06:04 AM
NascentOxygen
1 151
"This is Your Brain on a Laser Beam" https://www.youtube.com/watch?v=aUUl3YPDcAE Around the middle of the video...
Aug30-14 05:57 AM
gianeshwar
15 548
I was reading that if a balloon is rubbed against cloth, it becomes charged and therefore it sticks to a wall for a...
Aug30-14 03:30 AM
mal4mac
8 330
Hello guys, I read some articles recently about how touchscreens work by using the capacitance in human bodies. I'v...
Aug30-14 02:26 AM
Borek
5 241
Why does a rotating object appear to freeze or reverse it's motion when viewed through a stroboscope?
Aug30-14 01:11 AM
Drakkith
1 158
During my studies I failed to understand thermonynamics and compared the whole subject to black magic. This frustrated...
Aug29-14 06:44 PM
burakumin
14 459
Hi pf, I just noticed that when light shines onto my tv screen (when it is off) you see thin bands of colors...
Aug29-14 05:57 PM
sophiecentaur
2 194
At the moment I am trying to understand classical field theory and there's a conceptual problem I encountered, which...
Aug29-14 06:55 AM
Geometry_dude
0 199
Consider a system with a spring and a block. The block moves on a frictionless surface. At the equilibrium position,...
Aug29-14 05:39 AM
daigiaga1994
4 251
Good day I am interested in making a wicking bed for typical vegetable growing. I have read that the height of the...
Aug29-14 02:12 AM
dferasmus
2 279
Hi All, So here is an error analysis question for you all: I am measuring the temperature of an object at...
Aug28-14 11:44 PM
Simon Bridge
3 318
I know that we aren't touching anything because atoms are repelling because electron can't touch each other. What...
Aug28-14 08:18 PM
Drakkith
1 205

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