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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
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
2 70,606
Like many I've heard the 'ol rule - DON'T put metal in a microwave oven. But the thing is, I've neve heard anyone...
Feb2-10 09:08 PM
15 29,540
Hi can u plz explain me the difference between refraction and diffraction?
Mar6-10 09:56 AM
15 32,732
Hi everybody, it's nice to finally join the forum. I'm a little...:uhh:...:confused:. Is electric current (the kind...
May7-10 09:10 AM
15 12,465
How is this microscope gonna be way way better than the electron microscope? Does anyone know the significance of this...
Feb6-10 09:38 PM
15 7,191
Let's for arguments sake say that we have an invincible superpower humanoid with as much strength as is necessary. ...
Dec11-08 12:24 PM
15 4,844
Can the equation E=MC2 give you a value for a bodies gravity? If so whats the procces for working out mass? Thanks...
Dec18-08 09:56 PM
15 1,479
I am totally new to physics and do not study it what so ever. I do however find it extremely interesting and one...
Dec20-08 05:04 PM
15 1,841
I have recently redesigned an antique falling block single rifle action and need some help calculating the poundage of...
Dec22-08 05:31 PM
15 2,931
Me and some friends where down the pub and an interesting idea came up. say a fly is flying and collides with an...
Jan20-09 07:34 AM
15 1,999
I have a bike that has a mass of 100kilograms and its' wheels are 0.722meters in diameter. I am trying to calculate...
Feb4-09 11:55 PM
15 2,883
Now, I've asked about this on some other forums: and it seems all people are able to to is repeat what happens at...
Feb7-09 04:25 PM
15 1,257
One of the first things we learn is that the Earth rotates very quickly (about once a day). We, as very imaginative...
Feb17-09 11:54 PM
15 2,521
I need some clarification with voltage and current and how you calculate the voltage and the current. Also when you...
Mar8-09 02:44 PM
15 1,522
I am just wondering if matter cannot be created or destroyed that would mean that were are not making new energy we...
Mar15-09 11:07 AM
15 6,880
Why does the speed of light equal C? (ie. 3 x 10^8 m/s) Why isn't it 5 x 10^8 m/s, or 7 x 10^5 m/s, or 4 x 10^25...
Mar15-09 09:13 AM
15 5,410
I have a question concerning magnets. Lets say i have 2 magnets each wieghing 1 gram each sitting on a scale. The...
Mar25-09 02:20 PM
15 2,100
classically, acceleration towards the earth's surface is described by a=G*m/r^2 usually we think of using this...
Mar25-09 01:06 PM
15 1,996
My physics teacher today said in a nuclear reactor there is radiation called like sarencobe radiation I didn't hear...
Apr6-09 01:13 PM
15 1,261
I've read that no matter what force is acting upon an object, no actual "work" is being done unless the object moves. ...
Apr15-09 04:29 PM
Doc Al
15 1,539
Hi all, I'm implementing ray tracing .. If we say that an antenna is linearly vertically polarized, does that...
Apr23-09 10:45 AM
Bob S
15 2,831
I was curious if, when someone dies, are the informetion, such as memories, stored in the brain lost? Is it possible...
Apr27-09 07:47 PM
Count Iblis
15 2,806
What is the unit of 'strength' of the fundamental forces? When it is said that gravitational force is weaker than...
Dec27-09 02:46 AM
15 2,902
lets say we had a black hole or something that created a large gravitational field , one that could accelerate...
Jan4-10 03:08 PM
15 1,761
Is there any effects on electric fields or magnetic fields in a Gravitational field? I know that electro-magnetic...
Jan18-10 09:12 AM
15 2,201
I have a challenge for anyone gifted enough to communicate with a stupid layman in terms that I can understand. I'm...
Jan25-10 07:30 AM
Andy Resnick
15 2,083
What would be the force imparted on a beam of particles from focused sunlight? For the sake of argument all particles...
Feb12-10 07:11 AM
15 2,390
Hello Frndz, Yesterday I watched i video on You tube, The video shows a beer freezing in 2 sec. I was wondering if...
Feb2-10 08:58 AM
15 2,107
Hello, I'm new here and am very glad I found these forums, I've been seeking answers for some questions that have been...
Feb13-10 07:22 PM
15 1,285
There is a debate going on regarding this subject, and many different physics professors, who have a PhD in optical...
Feb21-10 06:00 PM
15 4,677
Hello , This is an extract from my book about my problem. I was...
Apr22-10 11:27 AM
15 2,682
Hey frndz, Can anyone explain me what is atmospheric pressure? How it acts? And is there any relation between...
Feb27-10 02:00 PM
15 9,630
Are there really infinite colours? I have been thinking about this for some time now (well, 2 hours), and I'm still...
Feb25-10 10:09 PM
Glen Bartusch
15 6,290
Bit of a silly question I know, but I have never been able to get answer which I'm happy with. I thought it might be...
Mar12-10 09:34 PM
Claude Bile
15 4,316
ok, lets say i am plotting a graph of Energy VS voltage so my units will be Joules VS Volt so my gradient will...
Mar19-10 07:27 AM
15 2,489
why is the light from the sun called white light?????????
Mar23-10 06:19 PM
15 4,560
I've been working out how much energy 60KG of material is equivalent to. However it strikes me as a possibility that...
Mar25-10 06:56 AM
15 4,265
Hello guys, It is hard for me to explain my question so I'll use a diagram ...
Apr6-10 12:15 PM
Doc Al
15 4,368
I'm going to go under the assumption that whatever I say is right, even though I know it's probably wrong (it saves me...
Apr16-10 08:12 AM
15 3,807
I found in a book the equation for the power loss caused by the heating effect of current in the transmission lines as...
Apr20-10 12:27 AM
15 12,238
I'm not a physicist. So mathematics probably wont help me understand this issue. However, this has been troubling me...
May11-10 11:38 AM
15 2,318

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