Recent content by JabberWalkie

Well, I found this article(letter) in nature: http://www.nature.com/nature/journal/v365/n6445/abs/365425a0.html Which is a theoretical calculation to check if it has a liquid phase. They guess that it does not.

There is no proof people. To the people that keep using the 4-current to show charge invariance, you need to assume that rho*c transforms as a time component to get charge invariance and a working definition of 4-current. This is from the angle where you start with the classical form of...

Check out this link from AIP: Figure 2 http://www.aip.org/statistics/trends/highlite/emp3/emphigh.pdf the median seems to be around 40k a year.

Well, I was thinking about buying some graduate level QM and E&M texts and studying in the meantime. To be sure, I have gotten rusty. Some recommendations along these lines would be appreciated. Thanks. -JabberWalkie

Hello all. I am wondering what my chances are of getting into grad school. I realize there are other posts on the topic, but everyone is in a different situation so I think this is warranted. I have what the university calls a combined honors mathematics and physics BSc degree from the...

Ok, thanks to everyone for their replies. They were all very helpful. :smile:

Ok, so I am wondering what an engineer really does on the job. How much of it is actual engineering, how much of it is paperwork, meetings, talking with clients, or whatever? I would appreciate it if only people that are working in engineering respond. Thanks.

So, I'm referring specifically to the phase diagram of Superconducting cuprates. For example like the one here: http://www.kitp.ucsb.edu/activities/qpt05/blog/8/blog8_files/phase.jpg I'm not sure how exactly "hole doping" is defined

Can someone tell me what Doping away from half Filling means? I see it everywhere. Although I can't find referance to it in Kittel or Mermin, although I might not be looking hard enough. I have and idea of what it is. Half filling refers to the doping where the Brillouin Zone is half holes and...

Nice... Thanks guys!...i knew it couldn't just be water dripping from the roof...had a hunch that there was some cool physics going on here. Thanks guys!

I don't see how, its a freezer...every thing is frozen, so nothing drips from above. Also, its not formed vertically, it is at an angle to the normal.

So, I've noticed that when I freeze ice cubes these strange icicles appear on the top of the ice. I took a picture, included as an attachment. Not really sure how something like this forms. Please no speculation.

Thanks for the help, i was able to find a transformation that made the metric locally minkowski, and everything just fell out from there! Thanks!

So, i really havn't done anything with one forms...ive looked them up, but they don't really make any sence. I am not sure how this helps :cry:Is there a way to do this without 1 forms?...we havn't been taught those in class...so there should be a way to do the problem without that...

So I've been working on this problem. I am given the metric in Kruskal coordinates, so ds^2=32M^2exp(-r/2M)/r(-dT^2+dX^2)+r^2(dθ^2+sin^2(θ)dΦ^2) And the path of a particle is X=0 T=λ θ=π/2 Φ=0 And the path of the observer is X=-1/2*T+1/2 θ=π/2 Φ=0 And I am asked to find the 3...