OK, we had fewer entries to this vexer that I expected, but the good news is that everyone who submitted an answer got it right. ... The principle involved...
This week's vexer is again another test of your ability for quack- busting. It appears that this issue never seem to go away even when there is an "obvious"...
This is a followup to a previous post on this thread. Readers may follow up-thread to the beginning of this report. In the continuing saga (controversy)...
As one of the two literal horses you mentioned, :) thanks, Zz, for giving our paper some air time. I especially enjoyed the various threads and discussions...
This is nothing new, but I feel the need to repeat advertizing this site since we continuously have users coming into our IRC channel asking basic, fundamental...
Humm... I think a lot of people need to brush up on their quack- busting abilities.... ... that ... of ... the ... of ... cannot ... rebuttal ... The 2nd Law...
I wonder if questions like this are ever asked in the physics GRE? :) What would be your weight if you are exactly at the center of the earth? [Assume, of...
My interpretation of Bohmian mechanics based on this paper is as follows (if this is wrong I hope someone will correct it): It's apparently necessary to...
It has been a quiet week so far in here, no thanks to me and my busy work load. Anyway, do you want a crash course in particle physics, particle collider...
OK, better late than never. For those of you who are still trying to follow the previous discussion on QM-wavefunction-"reality"-Feynman Path Integral...
... The answer is that your weight will be ZERO. One can qualitatively see this by considering that the gravitational forces are acting symmetrically in all...
OK, if you have ever watched Sesame Street, you will know how to play this game.... It works better if you remember the tune. Five of these things belong...
The biggest news so far coming out of the annual meeting of the American Association for the Advancement of Science in Seattle is the announcement of the...
... OK, for anyone who has had the time/energy/inclination to attempt going through my upload -- I have parsed it way way down, to a much shortened version...
In this week's Nature, a couple of interesting and important work to report on. The first is the report on a detailed study of the process of decoherence in a...
... wrote: It appears that PhysicsWeb also considers this to be worth highlighting. You may read their version of the importance of this paper here: ...
In a private exchange, On Fri, 2004-02-20 at 03:45, ... [...] ... Yes. I meant "You want" in the sense "You seem to be trying to" not "You ought to." I'm...
Hi, I'd like to ask some questions about nuclear magnetism. Do we have a complete theory about spin, magnetic comportments of the nucleus? And in fact, I may...
Hi Ugur, Very good questions. ... I would say that the theory of magnetism is as well understood as electricity. However, conceptually, magnetism is trickier...
It's true that the transition probability is a sum over real numbers each of which depends on one pair of paths, since if {w_i} is any finite sequence of N...
... There is a way to convert a sum of discrete entities into an integral of continuous entities. When Feynman introduces the technique in his 1965 book, he...
... numbers ... over ... mmmmmmm. interesting. ... of ... makes sense. ... 1 ... I think that may be what I was suggesting in PI-2: basically S' = the phase...
OK.. either this one was too easy and people don't want to play it, or it was too difficult. I really can't tell... ... The answer of course is MUON. It is the...
Let's all do the Egg Drop! There is a critical height (which is a whole number of floors above ground level), such that an egg dropped from that height (or...
Analytic usually refers to a complex function which is differentiable to all orders thoughout some neigborhood of a point. The value of the function and all...
... differentiable ... the ... I suppose it was the Taylor/MacLauren expansions where I originally learned this. For the expansions to work, the series has to...
It is just ironic, or amazing coincidence, that the week we have a vexer on breaking eggs, a review of a preprint appears on Nature daily update on exploding...
Welcome to all the new members we had in the month of January and February this year. We hope your stay here will be fun and informative. Please check out the...
We had quite a number of entries for this vexer, but most of them are wrong, unfortunately. ... higher) ... is ... The method is as follows: Drop the first egg...
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