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.

320. Video of the day: STS-119

Here I’ve collected some videos by NASA related to the recent somewhat problematic Space Shuttle mission STS-119. The mission’s goal is to the fourth set of solar arrays and batteries to the station, you will find complete walkthrough of the mission below.

319. Turbulence. Dynamical approach

When we study a turbulent flow, whether turbulence is realized in fluid, plasma, etc., one of the most interesting and complicated questions is the one about transition to turbulence: how exactly the smooth motion of the field becomes turbulent, chaotic, independent of external noise? It seems to be impossible to answer to this question using [...]

317. Global crisis: one interesting plot

As it seems, I did not write about global crisis for quite a long time It is not like I see any meaning to get deeper into finding ultimate reason why the crisis had to take off (I guess the only meaningful question one might ask in the present situation – “what am I, personally, [...]

316. Richard Hamming’s “You and your research”

Gabriel Robins, professor of computer science at the U. of Virginia, has kindly allowed me to repost this amazing transcript at NEQNET… I hope you’ll enjoy it as much as I did. Dmitry. Richard Hamming “You and Your Research” Transcription of the Bell Communications Research Colloquium Seminar 7 March 1986 J. F. Kaiser Bell Communications [...]

315. Turbulence: order and disorder in turbulent flow

Let us continue our short excursion into physics of developed turbulence (I hope that you don’t mind, if you do – please let me know ) Last time we have discussed technicalities related to averaging and statistics of the turbulent flow, today I would like to get back to foundations and discuss a bit various [...]

313. Video of the day: Susskind’s lectures on general relativity 7

Again – just posted. In this lecture, Susskind continues to discuss parallel transport, covariant derivatives and curvature (last time he has focused on 2-dim surfaces, this time he turns to higher dimensional case and finally introduces curvature tensor). He also discusses 4-currents, charge conservation and energy-momentum tensor (next time, I guess, he will introduce Einstein [...]

312. Turbulence. Statistical approach 2

Let us continue our brief discussion of stochastic approach to description of developed turbulence. 3. Kolmogorov scaling One of the most important and beautiful results of stochastic approach is Kolmogorov scaling. Earlier, I have already discussed Kolmogorov’s turbulence on the blog in details, let me ramble about it today a little bit more. The base [...]

311. Video of the day: LHC and search for the Higgs

A rather old promo video about LHC, which, I think, again may be considered interesting in light of recent news from CDF/D0 regarding constraints on the Higgs mass (no Higgs with a mass between 160 and 170 GeV, which leaves the only possibility that it is rather light albeit heavier than 114 GeV). Video features [...]

310. Turbulence. Statistical approach 1

Let me get back again to one of my most favourite topics in physics, that is, to developed turbulence. Last time (oh my, mid February) I have tried to explain what I consider the most important (and probably hard-to-solve) open problems in physics of turbulence. Now let me list quickly several (not too promising ) [...]

309. Video of the day: Quantum revolution

from BBC “Visions of the future”. Kaku is trying to argue that humankind is at a turning point to a period in which we will cease to be passive observers of Nature. Yessss, we all will be like Dr. Manhattan