Remember many weeks ago that one of our vexers asked the question on what would happen if you throwing a weight off a boat that's floating on water? It appears...
The last vexer was indeed a stumper! No one got it right! If you recall, last time I asked the following: Blow up two identical balloons, one more than the...
After a difficult one last week, this one should be a walk-in-the-park! A high-school level question that everyone should be able to answer! In fact, I asked...
A quick glance at one of our Polls shows that the prodominant academic group of our members are undergraduate students - in both physics and non-physics...
The big news this week is of course the press release from NASA of the Wilkinson Microwave Anisotropy Probe (WMAP) data that maps the cosmic microwave...
In the posting preceeding this, I listed 4 most recent experimental results that confirm the basic postulates of Special Relativity. So far, no one has added...
A math website, hosted by the University of Tennessee, Knoxville, promises to be one of the most comprehensive website for mathematics. It contains not only...
Humm. I thought this vexer was rather trivial, but we didn't have too many people answering it correctly. If you recall, last time I asked: You have a...
OK, if this one doesn't get everyone out of the woodwork and submitting answers, I don't know what will. Five apples are in a basket. How do you divide them...
If you are new to our website, then you may have missed a series of essays on the personal physics experience of a number of our members who have gone through...
I know! I know! It has been AGES since the last installment of this series, and it's all my fault. Some of you probably don't even know this series exists. The...
OOoookay. We had a strange one with this vexer. A couple of "spoilers" rather gave away the answer to this one, and that may have made people gave up on this....
OK, this one, I think, isn't trivial, but not difficult either. It can be made simpler if you can translate all the "words" into an algebraic equation. A woman...
Following the series in the APS News of the most highly cited Phys. Rev. Lett. papers, this month is #7 on the countdown: Scaling Theor of Localization:...
Welcome to all new members we had in Feb. (I know, I know. The month isn't over yet.) There are at least 3 different "series" of postings that may be of ...
On Feb 13 of this year, I posted MORE experimental evidence in favor of the postulates of Special Relativity (SR), including the very elegant measurement done...
Welcome to all new members we had in Feb. (I know, I know. The month isn't over yet.) ### Thank you, thank you. I like understatements, undernetphysics, and...
By chance I was reading, right now, this book http://redshift.vif.com/BookBlurbs/openquestions.htm which is sometimes very interesting, sometimes not, ...
The major news this week is the new test on the validity of Newton's law of gravitation between bodies as close as 100 micrometers. This new test is at a...
In the 28th Feb. 2003 issue of Science, there is an advance article on a soon-to-be-published paper that theoretically shows the possibility of having a...
... I'd like to remind you to reread Message #1 regarding the nature of postings/links that is allowed in here. It may be a bit "restricted" regarding...
Not bad! Not bad at all! A number of people did managed to answer the vexer correctly, although the approach ranged from purely analytical, to writing a...
This week's vexer should be relatively easy (I know, I know! I've said this so many times when no one could answer it!). If you typically receive our group via...
It is a well-documented fact that the general public (at least in the US) have poor science literacy, even though they profess to support science. What this...
Continuing the series of countdown on the most cited papers appearing in Phys. Rev. Lett. as reported in the APS News, this time it is the 6th most cited...
The mystery of high Tc superconductivity in the Cu-O layered material, discovered in 1986, is one of the biggest question in physics that remains unanswered...
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