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Recent posts
374. How big is the Universe: video of the day
Well, if you recall that it takes more than 3 years for a photon emitted by the Sun to reach the nearest star… the size of the causal patch, 14 billion light years, should impress you If words did not really impress you, then maybe this nice video will – Update: Daniel also liked this [...]
373. Some musings about Unruh effect
Good new long work week, science geeks! I’ve just finished reading a recent paper by Ugo Moschella and Richard Schaeffer “Quantum fields on curved space times and a new look at the Unruh effect” and wanted to share some of my thoughts with you… 1. Unruh effect. Gravitation and thermodynamics The subject of the paper [...]
372. On science (in Russia)
As I believe, in the long run the most painful hit that Russia got in final rounds of Cold War wasn’t a decrease of its military might or loss of political influence. It should be rather clear that those who suffer in war the most are the ones who cannot really defend themselves. The most [...]
371. Saturday’s photoguess
Kindly take a look at photos below and try to guess what are these nice guys building and where exactly does it happen Hint: Photo 3 has all information you need to guess correctly what it is. Answer: This is the launch pad for Soyuz rocket being built in Korou, French Guyana. Kudos to Gabriel
370. The future of science blogs
I’ve just finished a reading rather interesting article by Mark Penn on WSJ called “America’s newest profession: bloggers for hire“. Penn presents rather interesting stats there (based on analysis by Technorati): The best studies we can find say we are a nation of over 20 million bloggers, with 1.7 million profiting from the work, and [...]
369. Stephen Hawking’s “Black holes and beyond”: video of the day
Black holes, wormholes, initial singularity in cosmology… as explained by Stephen Hawking. Rumor says he is in Addenbrooke’s hospital now fighting with chest infection. I wish you quick and full recovery, Prof. Hawking.
368. Inertial confinement: more on interaction of laser emission with matter
Yeah… so, where did we stop last time? I’ve just said another triviality – that laser emission strongly interacts with material of the fuel capsule. There are several mechanisms of this interaction: deflection (ablator and fuel are almost transparent but not quite), absorption and scattering. Wired Science visits LLNL and National Ignition Facility As for [...]
367. ATLAS/CERN 2009 multimedia contest: video of the day
Are you a graduate student at physics department who is badly annoyed by the fact that your girlfriend calls you nerd? Do you want to be like Brian Cox instead? (oh God, my answer would be resounding No ) or at least to get an internship at CERN, to take a closer look on LHC [...]
366. Some interesting recent papers in Arxiv
Just wanted to acknowledge their existence, although I’ll not be really able to review them due to the lack of time… 1. Quantum field theory 1.1. “Non-Abelian Duality and Confinement in N=2 Supersymmetric QCD” by Michail Shifman and Alesha Yung. The authors study transitions from weak to strong coupling in N = 2 SQCD that [...]
365. Inertial confinement – using lasers for compression
I hope you are not getting bored too much by my discussion of thermonuclear fusion in inertial confinement reactors, because today I’m going to continue and finally start explaining why do they want to use lasers in HiPER to compress plasma. Basically, the main bonus of using lasers is their ability to concentrate huge energy [...]
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Large non-Gaussianity from axion inflation
January 31, 2012 14:01 -
On strong disorder renormalization
March 18, 2011 20:03 -
Relaunching NEQNET
January 20, 2011 21:01 -
Saturday’s photoguess: what does this monkey symbolize?
June 20, 2009 19:06 -
Dynamics of space storm
June 19, 2009 12:06
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Micro: Can 2 question provide a common solution? Black holes, information loss paradox and Ultra high energy cosmic rays. ...
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James Ph. Kotsybar: SAGITTARIUS A* -- James Ph. Kotsybar Mysteriously cloaked, obscure despite Interior illuminating glare, Long ...
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cad: The presentation can be found in several formats at http://pirsa.org/08110051/...
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Leo: Ok I have a question: if a black hole is supermassive, say 100 billion solar mass, let's suppose Alice fells int...
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superkuh: I am glad you are back! No more disapointing weekly refreshings of that monkey....
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Ariel Amir: Very interesting, thanks. It indeed seems to be very close to what we discuss here. I wonder whether the distributi...
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