Welcome to all the new members we had in the month of May. We hope your stay here will be educational, informative, and enjoyable. If you haven't done so,...
As expected, this one was a difficult vexer, both to answer and for me to evaluate. I certainly had to make a few judgement calls on what to except and what I...
Since this vexer is late, you have until end of NEXT WEEK to answer this one. This vexer again features our favorite IRC channel member, Toro. "Do you always...
http://fangio.magnet.fsu.edu/~vlad/pr100/ Interesting, old, original papers published by the PR, in pdf. (Like, i.e., the original derivation of uncertainty ...
Read all about a New Zealand farm boy who grew up to be the first to split an atom, won a Nobel Prize in Chemistry, and became the mentor for Niels Bohr, J....
... member, ... a ... table. "I've ... jacks ... OK, after being on vacation for a few days and looking at the answers submitted to this vexer, I will need to...
There are two recent articles that appeared related to neutrinos. Both of them are highly "readable" for most people. 1. Solving the mystery of the missing...
Another heads-up article for everyone not to miss. The current issue of Physics Today has an excellent article on the physics and materials with negative index...
Even MORE followup to this saga. A new report published this week has produced an even lower and more accurate limit on the change in the fine structure...
Within the past week or so, there appears to be some tweaking in the Yahoo Group appearence. If you frequent our website (rather than subscribe to it via...
Since most people who know me here are aware that one of my "favorite" activity is smacking quackeries and pseudoscience, I thought that I should highlight...
The examples of meteorites and tectonic plates (i.e. theories originally dismissed by science) somehow don't seem comparable to paranormal phenomena. For one...
The vexer from last week was certainly a doozy. ... a ... table. "I've ... jacks ... The ace, three, ten and jack correspond to the numbers 1, 3, 10 and 11. As...
When I was young and naive, I found this part to be rather confounding. And none of the instructors I had at the time actually spent some time to explain this....
... meteorites ... I certainly agree with you regarding the fact that there are cases of deception connected to paranormal phenomena. However, a lot of...
Yes, one problem with statistical evidence is the possibility of some filtering in the media or reporting process, unusual occurrences being more likely to be...
Looks like school children in the Netherlands and throughout Europe will be building cosmic ray detectors! :) http://physicsweb.org/article/news/8/6/9 Zz....
Big news in the just-released issue of Nature. Two (count 'em) back- to-back papers on quantum entanglement and quantum teleportation of states using atoms...
... A couple of people on our IRC channel asked me for background info on quantum communication and quantum entanglement related to this report. I have...
We had quite a lively interchange of e-mail regarding this vexer. Obviously, I can sometime be quite picky on the kind of answer that I want.... ... V ... one ...
Since I'm about to go fly off to a conferece in a few minutes, I thought a vexer of airplane trips would be appropriate. This vexer is similar to something I...
Hi All, An interesting document just came out outlining the major goals of high energy physics in the 21st century. The document is meant as PR piece for ...
Hello people, At first, I apologize for my beginner's english. I'll try exposing my doubt about Lagragian's formula. Question is simple: Why "L = Kinetic...
Oh, btw, I'm BACK! :) Now back to this question. The problem here is that it appears that you were introduced to the Lagrangian/Hamiltonian principle without ...
In phase space (that is in "Hamiltonian" rather than "Lagrangian" mechanics), the action associated with a path q_i(t),p_i(t) is the integral along the path...
Okaaay.... So we still have people awake in here! :) ... is ... Of course, there isn't a paradox at all here if you know what is meant by "average velocity"....
Right of the bat, I will apologize for this week's vexer! If a bull swallows a bomb, which word is the most appropriate? Shocking, abominable, terrifying, or...
Welcome to all the new members to our group during the month of June, except for a few spammers who we were more than happy to delete and ban. If you haven't...
So we already had 3-photon and 4-photon entanglement. Now in this week's issue of Nature, there is a proof-of-principle experiment demonstrating a 5-photon...
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