Dmitry Podolsky has got his PhD from Landau Institute for Theoretical Physics. He currently works as postdoc at Case Western Reserve University. He is also one of the editors of NEQNET.

230. Video of the day: viscosity or the arrow of time is reversible

A lot of fun to watch CP is clearly conserved in this experiment LOL LM explanation of the effect: The reason why it looks counterintuitive is the people normally confuse chaotic motion and organized motion. The entropy growth in the system is extremely slow – you can see that the droplets don?t change too quickly [...]

229. Twitter updates for 2009-02-04

David Wands on asymmetric universe: http://dx.doi.org/10.1038/nphys1195 #nature #cosmology # Fluid dynamics: bounce to chaos http://dx.doi.org/10.1038/nphys1187 #nature #hydrodynamics # Long lived quantum memory: http://dx.doi.org/10.1038/nphys1152 #nature #quantum # FIRST robotic challenge 2009: http://is.gd/ih0R #robotic # Quirks – new word in theoretical physics http://resonaances.blogspot.co…..uirks.html Don’t mix it with quarks #fun #quirks # Dark energy and particle physics – [...]

228. Book review: D. Yoshioka. The quantum Hall effect

About a week ago we have briefly discussed the physics of the quantum Hall effect. Let me remind you the conclusions we came to. We discriminate between the integer and fractional quantum Hall effects according to the value of the filling factor . The latter characterizes the many-particle wave function describing behaviour of electrons in [...]

227. Video of the day: Meissner effect in superconductors

Here is the video related to the Problem N8 that we have discussed yesterday (what you see is probably high superconductor – the liquid that the guy uses seems to be liquid nitrogen). The effect seems also to be related to the Problem N4 (confinement of quarks). I mentioned this idea several times on the [...]

226. Top ten open problems in physics

What is the ultimate purpose of my work as theoretical physicist and, if you want, my existence itself? Is it serving the community of other physicists like organizing and participating in conferences? Nop. Then, maybe teaching future physicists in the University, encourage young people to enter the exciting field of physics? Not quite. Writing good [...]

225. Video of the day: Google Earth 5 beta

New Google Earth beta version has been recently released and it is just amazingly cool: it supports historical imagery (that is, you can see how the part of the Earth’s surface you are interested in looked like 50, 100, 10000 years ago), ocean data (that is, you can now study the ocean’s floor with Google [...]

224. Twitter updates for 2009-02-02

Self-starting micromotors in a bacterial bath: http://link.aps.org/doi/10.110…..102.048104 #prl # Statistical properties of one-dimensional random lasers: http://link.aps.org/doi/10.110…..102.043906 #prl # Holography of boost invariant plasma: http://link.aps.org/doi/10.110…..102.041601 #prl #rhic #qgp # Teaching scientific knowledge does not improve scientific reasoning: http://twurl.nl/maw2tu Not always it used to be like this. #fun # Talk on galactic cold dark matter: http://hosting.epresence.tv/CITA/1/watch/154.aspx? #cosmology [...]

223. Starting dS/CFT: Hilbert space

Since I was recently thinking of the dS/CFT correspondence, I find it natural to also start discussing facts and hypotheses related to dS/CFT  and other gauge theory – gravity dualities on the blog.  In what follows, we will mostly discuss 4-dimensional gauge theories. First of  all, what is the motivation for us to look for [...]

222. Twitter updates for 2009-02-01

@EtchedHeadplate AI is like nuclear energy, once you invented it, you inevitable use it irrespectively to philosophical and ethical cons.;-) in reply to EtchedHeadplate # Why water is blue? http://snipr.com/b2qzp #optics # Michael Peskin on John Updike: http://twurl.nl/x2rly7 Sad.I like his Rabbits very much #updike # David Berenstein on units and order of magnitude estimates: [...]

221. Turbulence: Kolmogorov law derived in one line

As you surely understood from the previous post, today is hydrodynamics and turbulence Sunday on NEQNET. If so, let me still 5 minutes of your precious time discussing the physics of developed turbulence. The latter is very complicated. And today is Sunday. Do I really have to overload your brain on Sunday with exceedingly technical [...]