Hi Zapper, Tom, et. al., This is regarding your first question about our paper, Why not use a longitudinal and truly one-dimensional picture like this ... ...
Booom0r1, I wanted exactly the same thing when I first learned about electron diffraction. The trouble is that the slits have to be REALLY small for electrons...
The reason why you don't get to see, or do, experiments that demonstrate electron interference pattern, is because it isn't as trivial as doing the same thing...
There have been very few opinion essays about physics that I have found to be extremely captivating. The last one in recent memory was Steven Weinberg's esssay...
hi all I was in undernet #physics few days ago and realised its an excellent place to have discussions so here I am now looking for a new topic and a new...
... Welcome to our Yahoo group and to the IRC channel. And yes, I have worked at a synchrotron before - the National Synchrotron Light Source (NSLS) at...
http://xxx.lanl.gov/list/cond-mat/recent#1 Zz, something you might be interested in and for the rest of the forum members:) an interesting link even about...
... Thanks, lash. If you look our Links section under Physics Papers and Preprints, you'll notice that there already is a link to the e-print archive. In fact,...
Hi All, The "Visualizing the Phonon Wavefunction" paper (from the journal club) is now available as a web page, complete with live animations. The web address...
It looks like some of our members are finally back from summer vacations. ... suggested ... female) ... equally ... One's obvious first line of attack was to...
This vexer is again taken right out of intro physics. A disc of mass M = 1.0 kg with radius R = 0.20m is rotating at 1.0 radians per second. If you drop a rock...
Last week I reported on the paper published in Nature on the experimental measurement that gave the clearest indication yet of the presence of a quantum...
Thanks for the excellent work, Scott. To everyone else, I hope you take advantage of having the actual authors of the paper being available to answer your...
Is it quite certain there's no way to calculate probability distributions P(q_i) without doing numerical integrals of those gaussian functions? I think...
Great observation. Yes, its true, the P(q) projections can be done analytically for the cases we are studying in the paper. For the two mass case, and using...
Similar to the Albert Einstein Archive, which was posted in here about a couple of months ago, there is the Newton Project that has been going on for some time...
Hi, The J/Psi is a bound state of a charm quark and an anti-charm quark and it is quite heavy (about the mass of three protons). It is also very long lived...
To just add a bit to Tom's reply, the J/psi, although it has two names, is really just one particle. This was the result of its discovery independently by two...
I take it back. People are still not back from their vacations or school holidays. ... disc ... inertia] ... This is a straightforward application of...
This week's vexer is one of those that you can solve if you do it the hard way - finding one value at a time. However, you can do this a lot quick (and in a...
Thank you Tom and Zapper for answering my questions.... wonderful explanations :) Bobby ... http://www.slac.stanford.edu/history/pubs/richterdis.pdf ... ===...
Hey Zapper, This is indeed a very interesting essay. By my more or less "logical positivist" worldview, I basically agree with Michael Riordan's view that...
Hey there, Straycat. Thanks for the terrific points you brought up. ... I certainly agree that there has to be a distinction between the two, however.... ...
... I suppose I keyed in on the word "almost." If some features still remain, then the young theorist's ideas sound to be testable in theory - so perhaps...
... <zapperz2000@y...> ... theorist ... almost ... and ... admission, ... sensitive ... or ... In your earlier posting, you gave SR as an example, where the ...
... I ... a ... how ... Yes, I mean the same thing when I talk about angels-on-pins. It is the epitome of a theoretically untestable idea. Actually, one that...
... <zapperz2000@y...> ... what ... to ... isn't ... is ... I certainly agree that this is a no-no. Unfortunately, similar problems have, to some extent,...
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