OK, this is a kick-ass website hosted by Rutgers University. It has interviews and oral essays by some of the biggest names in physics. Of course, I'm...
I came across another substance where the solid phase that is less dense than the liquid phase. It's Germanium Solid density: 5.323 g/cm³ Liquid density: 5.60...
... dense ... We certainly should verify that using a more reliable source (I don't consider Wikipedia as one). Anyone has a CRC Handbook handy? :) Zz....
Hey again, Has anyone heard anything lately about the Afshar experiment? I was perusing Lubos Motl's blog and ran across his criticism of Afshar's analysis: ...
Many people were very suspicious about this vexer, thinking that they must have missed something. They didn't! :) ... The motorcyclist would have taken 20...
This week's vexer may not be that difficult, but it does require you to work through it carefully. You want to build a thermometer using a glass tube of...
If anyone wish to catch up on what we have so far, please read the ... When I first wrote Part XII of the series on Publishing in a Physics Journal, I wasn't...
I see your point. It's debatable whether repeated experience is admissible for use in making an inference about V. According to common sense it is, but...
Either this one stumped everyone, or it was just to tedious to do. ... on ... The equation for volumetric expansion for solids and liquids is Delta(V) =...
Let's see if you can get this one. And feel free to convert it into SI/metric units if you are more comfortable with those. Assuming nothing else blocks their...
[Vexer will be late (again) this week. I have a major review of our program at the end of this week and am severely short of time.] Richard Dalitz passed away...
If anyone wish to catch up on what we have so far, please read the ... I'll try not to make a habit out of this, but I believe there's something to add to this...
I suppose this has more to do with historical curiosity (I could be wrong). If you want to read about Euclid's Elements, a website at Clark University has been...
Hi all, I work in a steam power staion, and there is something that really puzzles me!! In the steam drum, which is a pressurized vessel contains water and...
Hi! My approach to this phenomena is that when it starts droping there is a decrease in pressure which makes it more likely for the evaporation and other...
Don't you just hate it when work gets in the way of your online responsibilities? ... tall ... due ... This is, of course, pure geometry, which means that the...
This may be a pain to judge, but here goes.... Lightning strikes aircrafts very frequently, but it is very rare that there is any damange other than perhaps a...
Hi, I used silicon switching diode in foreword connection at different temperature. At 140 degrees the current shows up at heigher voltage than the voltage at...
Hi, I used silicon switching diode in foreword connection at different temperature. At 140 degrees the current shows up at heigher voltage than the voltage at...
I don't think so. Silicon diode can tolerate 200 degrees and I get this problem at 140 degrees. Notice that I did not move the diode from the oven, I change...
I hate to revive a dead horse, but it is relevant to a discussion that I've been having. While conventional physics accepts the fact that photons have zero ...
I would say that one of the marks of a good educator is the ability to guage the intelligence, level of sophistication, and (current) depth of knowledge of the...
Hi Zz, I'm not quite sure the best way to approach this issue, but it is a good question. I think my original thought experiment (with the "relativistic black...
... have ... it's ... of its ... GR, the ... ANY form ... bend). ... necessarily mean ... have mass. ... gravity ... complex and ... (which ... gravity ... ...
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