There's a very good summary of the progress so far in the determination of the range of validity for this. Anyone wishing to catch up on this should read this...
Another terrific article in this month's issue Physics World to coincide with the World Year of Physics 2005. This article, written by John S Rigden, argues...
Looks like this vexer can still give people problems... ... spinning ... while ... In the simplest situation, there is NO EXTERNAL TORQUE being applied to the...
This one should be relatively straightforward. The distance from the center of the moon to the near side of the earth is 378000 km while the distance to the...
This is a continuation of our ongoing series. If you wish to catch up on where we are so far, please read the archive messages below: So You Want To Be A...
Dear all members, Any advice on choosing what field one wants to do research one? As a young graduate, deciding what area will be interesting in the future is...
Boomor, That dilemma that you currently experiencing (i.e. "what one finds interesting" versus " what one is good at") is one that while not a physicist but...
... again ... I think what is more important is to know what area of physics that you do NOT want to do. Once you know this, then don't worry about the rest ...
This is a tricky question. However do you really have to pick one field? In my experience, no. I've switched fields several times. I started in laser ...
Another one bites the dust.... ... earth ... 391000 ... to ... Since the gravitational acceleration is proportional to 1/r^2, where r is the distance, then via...
OK, I was bored, so that's how this vexer came up..... Shouldn't all objects at the same temperature feel like they ARE at the same temperature? You aren't...
As reported in April 12 ScienceNow site, there appears to be a VERY recent development in this. Michael Murphy, an astrophysicist at Cambridge University, has...
This is more of a historical interest than anything else (but note the clear proposal of the pilot wave scheme). W. De Baere has translated the M. Renninger's...
Hi, I think the discussion of this has been done before but it got very scattered. Here is the question, which of the Quantum Mechanics Formulations don't run...
Oy. I thought this one was one of the better and fun vexer. Not many people attempted it, though... ... the ... they ... It isn't just how cold something is,...
OK, see if you can figure out this one... If you are swimming under water, to what depth approximately can you breath through a simple air tube? What...
It has been a while since we have a new paper to read and discuss for our Journal Club. Those of you who are new here may not even know such a thing exists -...
There appears to be two major news (so far) from the APS April Meeting currently running this week out in Tampa, Florida (Tom, are you attending this?) The...
... Hi, Bohm's formulation is a hidden variable theory (one of the few or only) and does involve action at a distance. I'm not sure it's in the same class as...
Hi Zz, ... Sadly, not this year. But I do have spys keeping me posted day-by-day :) ... There is a pentaquark talk here tomorrow at LBL by Stepan Stepanyan...
I tend to agree with the quote (Q4) from Feynman (usually a safe bet): At least for the dynamics of classical particles and electromagnetic fields, it's...
... the ... Isn't the point of a hidden variable theory to remove the need for action-at-a-distance? That is the main hypothesis (casuality) against QM at the...
Hey boomer, ... I agree with video that EPR is not really a paradox. One of the most important take-home points of the Styer paper, imho, is that no matter ...
... against ... Just to add to what David said: My understanding is that the purpose of introducing hidden variables is solely to restore the form of...
... Let me expand on a point I made in my last post regarding the importance of understanding how terms are defined. I haven't had time to look at the journal...
The pentaquark colloquium was interesting. Thirteen experiments have found some evidence for a pentaquark (there are several possible quark configurations...
Humm... no one here snorkle? :) ... The answer: approximately 3 feet of 1 meter! (yes, THAT little). The further you are below the water surface, the more...
OK, maybe not many people here do scuba diving or snorkeling. But I'm sure there's a good chance that many more people here drive a vehicle! :) Why is it...
I don't know if this is valid or accurate, but it was an enjoyable reading. So I thought I'd pass along the "fun"... http://arxiv.org/abs/physics/0504179 Zz....
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