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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
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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
ZapperZ
2 70,551
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...
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dean barry
19 342
Beginner and first time poster here so be gentle! First off, I understand the main difference is that one is an...
T 07:20 AM
sophiecentaur
13 264
I saw this on Wikipedia http://en.wikipedia.org/wiki/Electromagnetic_absorption_by_water...
T 07:18 AM
Basimalasi
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Hi. I have a question about the Holographic Principle. I've been looking up things about it for a while now, and I...
T 07:17 AM
sophiecentaur
2 121
I was teaching myself standing wave's chapter. It is said in the book that when plucking in the center of the string,...
T 06:50 AM
Jackson Lee
4 148
how can we find damping constant from graph of amplitude versus time?
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NascentOxygen
1 54
"This is Your Brain on a Laser Beam" https://www.youtube.com/watch?v=aUUl3YPDcAE Around the middle of the video...
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gianeshwar
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Hello! From a data set of F-x measurements of a single dsDNA molecule I want to calculate the persistence length P...
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NascentOxygen
1 149
Can someone please tell me the name of the theory describing the interaction of photons with charged particles eg...
T 05:09 AM
mal4mac
4 148
Hello, Suppose we have an electric circuit consists of a battery and 2 wires connected to both ends of the battery....
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ehild
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I was just wondering, are there any waves that can pass through the human body in a straight line, without being...
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vortextor
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I was reading that if a balloon is rubbed against cloth, it becomes charged and therefore it sticks to a wall for a...
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mal4mac
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Hello guys, I read some articles recently about how touchscreens work by using the capacitance in human bodies. I'v...
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Borek
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Why does a rotating object appear to freeze or reverse it's motion when viewed through a stroboscope?
T 01:11 AM
Drakkith
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During my studies I failed to understand thermonynamics and compared the whole subject to black magic. This frustrated...
Y 06:44 PM
burakumin
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Hi pf, I just noticed that when light shines onto my tv screen (when it is off) you see thin bands of colors...
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sophiecentaur
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I have some confusion about how blockages result in the laminar/turbulent flow of fluids in pipes. From my...
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bigfooted
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At the moment I am trying to understand classical field theory and there's a conceptual problem I encountered, which...
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Geometry_dude
0 151
Consider a system with a spring and a block. The block moves on a frictionless surface. At the equilibrium position,...
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daigiaga1994
4 202
Good day I am interested in making a wicking bed for typical vegetable growing. I have read that the height of the...
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dferasmus
2 241
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
3 274
Wikipedia states that "In the vis-viva equation the mass m of the orbiting body (e.g., a spacecraft) is taken to be...
Aug28-14 08:51 PM
taylorules
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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
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I have a question about transfer of electric charge in metals. My understanding is that electrons move in and out of...
Aug28-14 05:53 PM
my2cts
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When I connect filament(light bulb) in the electric circuit I can see the light. but when I connect only...
Aug28-14 05:39 PM
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Hello, I'm wondering what the exact definition of a local conformal transformation is, in the context of General...
Aug28-14 04:49 PM
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How was the magnitude of the velocity vector found in the example provided? This is a particle in space so I has 3...
Aug28-14 04:15 PM
jtbell
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Hi people, I just found out that the famous Feynman Lectures on Physics are now online, so I'm going through them...
Aug28-14 04:07 PM
fcacciola
0 128
Please list any links in you have them.
Aug28-14 02:08 PM
berkeman
4 246
This isn't homework. I'm reviewing physics after many years of neglect. Since a simple harmonic oscillator is a...
Aug28-14 12:49 PM
DaleSpam
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sufficient enough to redirect/shield against ultrasound 1MHz being directed through the air. i know a vacuum would....
Aug28-14 11:21 AM
mcriv880
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Hi everyone! Just wondering why when light hits glass it can pass through and be reflected at the same time. I'd like...
Aug28-14 08:24 AM
Nugatory
2 178
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Hello. I'm trying to calculate the total collisional cross section of the hydrogen atom impacted with the proton....
Aug28-14 03:31 AM
goodphy
0 127
If m mass is complete ly distroy by e=mc2......then what happen about electric charge and magnetic energy?
Aug28-14 02:08 AM
D.R.U
8 393
Hello , firs of all I know that every magnet has two poles ad the field lines exit one pole and enter into the other ,...
Aug27-14 08:13 PM
jtbell
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If matter and anti matter can combine to cancel each other out, can your reverse the process to pull matter and anti...
Aug27-14 06:29 PM
Agrasin
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If I introduce a gas into closed vacuum system at a known rate lets say 10 SCCM there will be a subsequent pressure...
Aug27-14 11:27 AM
euquila
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You typically hear of radiative heating as exciting an electron to a higher state in an atom or molecule, but heat...
Aug27-14 09:35 AM
Andy Resnick
1 171

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