The age of old problem of Navier- Stoke’s Equations and Von Neumann Machines!

Millennium Problems : These are very big deal when it comes to Mathematics. But, for some obscure reason, One of them is not very popular among Engineers, even though one of the last standing problems in classical physics – Navier–Stokes existence and smoothness (one of the millennium problems) is of major consequence to Fluid Dynamicists, Aerospace/Mechanical/Chemical Engineers and Many others alike. I still don’t know why is that the case. Maybe the recruiting agents at undergraduate level do not want to scare away students who are already bog down by assignments and homework based on the ‘Solved’ mysteries of last century. I agree, even ‘Euler’ equations – simplified form of N-V equations, will require a significant amount mathematical prowess to tame that beast ‘Computationally’ (leave aside analytically) …

Something interesting happened in February this year, Dr.Terence Tao from UCLA, has a new paper out. (Title Reads : Finite Time Blowup for an Averaged Three-Dimensional Navier-Stokes Equation). His new idea is making quite a buzz around but as most of them say, it just a new direction to the approach, but no way closer to resolving the problem. Next stop is to study the consequences of this paper and ( the one involving finite time blowup of Euler Equations), but that would be a summer Project altogether. I would be seeking help from some colleagues who have a formal training in Logic Gates. Next are the Von Neumann Machines. Still this cross pollination of different ideas from distant branches of Engineering might just pay off for the next generation wave of researchers … Yes it is as weird as Indian Hip Hop – Beware the MC !

 

 

Blowup :

Now, just to learn what it means to ‘Blow up’ a solution, We would need a whole lot of machinery of Numerical Methods and Linear Algebra. But in short means exactly what it sounds – Reaching non physical values of Physical entities ( or just infinities). Let the melody ring in your ear over and over again …

Computational Vs Theoretical Vs Experiments !!!!

This is how it feels sometimes:

 

 

 

 

‘Possible’ Major discovery on the corner !

Well, tomorrow might be a BIG day for the Astrophysics community. The buzz going around the possible evidence for the detection of ‘Primordial Gravitational Waves’ is huge. If ‘Higgs’ discovery was a major breakthrough in Particle Physics, detecting Gravitational Waves (atleast directly, indirect detection came in 1974) will be crown jewel in the throne of Astrophysics. Implications are very big for Inflationary cosmology and understanding the ‘Early’ state of the universe. Now, it not just any other ‘tick’ in the checklist of confirmation of the theory of relativity, it will be THE most important box in that list.

All bets are on BICEP (Background Imaging of Cosmic Extragalactic Polarization)  experiment, which is designed to measure the polarization of the cosmic microwave background (CMB). Now, this experiment is claimed to have unprecedented level of precision as compared to the previous attempts. Check out the sensitivity comparison for various experiments :

Gravdetectsensors

CMB temperature fluctuations (BICEP data, 2008) are well represented in the following movie, check this out —

When ‘Higgs’ detection was confirmed, the list of people involved in the project at CERN took more space for the journal entry than the actual paper which came after title credits ! To go through the QFT and the possible variations of it to understand the data released at CERN takes a lot out of you as a student. It is quite an undertaking if you are majoring in something other than Particle Physics at this point of time. But, classically speaking, understanding Gravitation is where the real FUN begins if you ask me. It is very deterministic and quite fascinating even to visualize while studying abstract concepts like virtual time and so on. Best summary that I could find on this subject came from two sources :

1. Gravitation (Physics Series) Charles W. Misner, Kip S. Thorne , John Archibald Wheeler.

2. Three Hundred Years of Gravitation – Stephen W. Hawking (Editor), Werner Israel.

These two books are very verbose but with great description of the matter which is considered the foundation of theory of Gravity. Big chunk of pages to cover in one sitting so I would say ‘One page at a time, Brother’ !

Now, if their claims are verified in upcoming years to come, It will be a quite a change in the way we approach the study of cosmology in mainstream. Many are going to be drawn to study inflationary way of describing the observations (all hail Guth!) back to the best known game in town ! Press release can be read here.

This is the REWARD you get from doing Physics. It is getting more and more exciting every year. Bring on the Pretty and Mighty detectors for us to play  ! Com’on !!

Satellite-based CMB observatories : 

1.COBE – Cosmic Background Explorer
2.WMAP – Wilkinson Microwave Anisotropy Probe
3. Planck*
4.Relikt Relikt-1
4.SPOrt Sky Polarization Observatory

Balloon and Ground-based CMB experiments: 

ACBAR Arcminute Cosmology Bolometer Array Receiver
ACME/HACME Advanced Cosmic Microwave Explorer/ HEMT+ ACME
ACT Atacama Cosmology Telescope
AMI Arcminute MicroKelvin Imager
AMiBA Array for Microwave Background Anisotropy
APACHE Antarctic Plateau Anisotropy CHasing Experiment
APEX-SZ Atacama Pathfinder EXperiment
ARCADE Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission
Archeops ARGO
ATCA Australia Telescope Compact Array
BAM Balloon- borne Anisotropy Measurement
BaR-SPOrt Balloon-borne Radiometers for Sky Polarisation Observations
BEAST Background Emission Anisotropy Scanning Telescope
—BICEP Background Imaging of Cosmic Extragalactic Polarization*
BIMA Berkeley Illinois Maryland Associations
—BOOMERanG (B2K2) Balloon Observations Of Millimetric Extragalactic Radiation and Geophysics*
CAPMAP Cosmic Anisotropy Polarization MAPper
CAT Cosmic Anisotropy Telescope
CBI Cosmic Background Imager
CG Cosmological Gene
Clover N/A
COSMOSOMAS N/A
COMPASS COsmic Microwave Polarization At Small Scales
DASI Degree Angular Scale Interfer-ometer
EBEX The E and B Experiment
FIRS Far Infra- Red Survey
KUPID KU-band Polarization IDentifier
MAT Mobile Anisotropy Telescope
MAXIMA Millimeter Anisotropy eXperiment Imaging Array
MBI-B Millimeter-Wave Bolometric Interferometer
MINT Millimeter INTerferometer
MSAM Medium Scale Anisotropy Measurement
PIQUE Princeton I, Q, and U Experiment
POLAR Polarization Observations of Large Angular Regions
POLARBeaR POLARization of Background microwave Radiation
Polatron N/A
Python N/A
QMAP N/A
QMASK QMAP and Saskatoon (SK) Data Combination
—QuaD- Quest (Q and U Extra-Galactic Sub-mm Telescope) at DASI (Degree Angular Scale Interferometer) *
QUIET QU Imaging ExperimenT
SK Saskatoon
SPT South Pole Telescope
SuZIE Sunyaev- Zeldovich Infrared Experiment
SZA Sunyaev-Zeldovich Array
Tenerife
TopHat
VSA Very Small Array

Note : Keep an eye on these bad boys (*)

Source : Robinson Gravitational Wave Background TelescopeCMB Experiments

Preach, Sagan !

preachsagan

For a long time, Cosmos has been on IMDB’s  top 10 TV shows of all time. It is no wonder that appetite for understanding of deep mysteries of cosmos fascinates people. Sagan’s Cosmos has a special place in popular culture here in West, well to be honest, even in Asia, Africa and other parts of world as well. His way of delivering the state of the art to his audience has been the bold identifier of the Science Communication in US and all over the world since 1980.

Tonight, Cosmos: A Spacetime Odyssey premiers on FOX and National Geographic. Stay tuned for the awesomeness which belongs to prime time television !

Freddie

End of summer 2004, sitting in my living room searching for a song or two, I was looking for random songs to listen to. Summer in India can get pretty hot and hard to bear more often than not, especially in May-June. A well chosen stream of songs hitting your eardrums loudly and lazily can go miles with you, for whatever you might be doing or trying to get done. I was waiting for the result of Engineering Entrance Exam and was very anxious. A month of vacation before going to college, nothing more exciting or depressing can happen to you in that age, well depending on how well you did in the exam.

Stage was set for my ‘search and destroy’ mission. Goal was to remove all the unwanted songs and find new ones. TV was playing some random MTV songs – some in Hindi and some in English. Yes, MTV in India is weird, as weird as or more so than in US counterpart. The song which caught my attention was Queen’sI want to break free’. 


I still remember how dumbstruck I was after watching that video. Well, another annoying habit of these music channels is that they often don’t play the whole song. That video is crazy for the beginner, still the song was stuck in my head instantly. It took me a while to find that song. In fact, 6 months to be exact. I remember how many counts my system got playing that song on loop. 38 !  I haven’t wasted my time listening to one song for that many times before or after that. Since, I have been a huge admirer of Queen and especially, Freddie Mercury.

His story is one of the most inspiring stories ever. His songs have given countless no of hours of sheer joy to millions across the world, including me. A linear algebra teacher told my class last year, about him attending the Queen concert at Wembley in 86. According to him, “Craziest ever the crowd has gotten, like ever, and not just west London”.

Damn! He had a Voice. Not sure how the taste in music changes or how in many ways it still remains same, his songs will surely be in my ‘Go To’ list of songs …..  In all of his songs and live performances, he was unapologetically, Freddie !

freddie1

Couretesy of freddiemercury.com/

Sci-Fi … Ever !

1. The Matrix (1999)  .. 9.5/10.0

The_Matrix_Dodge_this_(HD)_0893

 

2. 2001 : A space Odyssey (1968) … 9.4/10.0

Gary Lockwood And Keir Dullea In '2001: A Space Odyssey'

 

3. Contact (1997) …. 9.2/10

Jodie

 

4. Blade Runner (1982) ….. 9.1/10.0

blade-runner

 

5. Alien (1979) … 9.0/10.0

alien-chestburster

Next five (generally nobody cares after top 10. Not worth the effort to go further, even if there are many)

 

6. Gattaca (1997) … 8.5/10.0

gattaca

 

7. Jurassic Park (1993) … 8.5/10.0

jurassic-park

 

8. The Andromeda Strain (1971) … 8.5/10.0

Andromeda-Strain

 

 

 

 

 

 

 

 

 

9. Dr. Strangelove (1964) …. 8.4/10.0

dr-strangelove

 

10. Close Encounters of the Third Kind (1977) … 8.3/10.0

close-encounters-of-the-third-kind

How do we know who WE are !

Experimental Philosopher Joshua Knobe talking about the idea of ‘True’ self …. Weekend divergence with a pinch of ‘Philosophical’ salt.

Seems like Experimental Philosophy is a very new branch of Philosophy, nonetheless, it is fascinating to know how can we find the connection between the abstract ideas of Philosophy of human mind and cognitive behavior of humans from Psychology perspective.

2013 HeadCon seminar was arranged by Edge and the state of the art in Social Sciences was the topic of discussion. 

List of speakers is pretty fascinating :  Sendhil Mullainathan: “What Big Data Means For Social Science”; June Gruber: “The Scientific Study of Positive Emotion”; Fiery Cushman: “The Paradox of Automatic Planning”; Rob Kurzban: “P-Hacking and the Replication Crisis”; Nicholas Christakis: “The Science of Social Connections”; Joshua Greene: “The Role of Brain Imaging In Social Science”; Laurie Santos: “What Makes Humans Unique”; Joshua Knobe: “Experimental Philosophy and the Notion of the Self”; David Pizarro: “The Failure of Social and Moral Intuitions”; Daniel C. Dennett: “The De-Darwinizing of Cultural Change. Also participating: Jennifer JacquetDaniel KahnemanAnne Treisman.

Don’t forget to get a double espresso shot before engaging yourself with any one of the videos ! I found Knobe talk worth mentioning among all. Well, all are very well put to say the least.

“A life in letters”

The most beautiful thing about English is that it has a way to bring you all those wonderful works of wonderfully beautiful minds crossing the boundaries of culture, country and prejudice !  F. Scott Fitzgerald’s  ‘A Life in Letters’ is such an example of brutally honest yet profoundly meaningful collection of writing. I wish I could have read it in high school. Yet, here I am.

F. Scott Fitzgerald’s endearing letter to his daughter touches you instantly. There are few things about the world that you want to tell everyone as soon as you understand them. This is no different …..

 

Fitzgerald

(Source: F. Scott Fitzgerald: A Life in Letters ; Image: Fitzgerald with both his daughter, “Scottie,” and wife, Zelda, via.)

 

August 8, 1933

Dear Pie:

I feel very strongly about you doing duty. Would you give me a little more documentation about your reading in French? I am glad you are happy — but I never believe much in happiness. I never believe in misery either. Those are things you see on the stage or the screen or the printed pages, they never really happen to you in life.

All I believe in in life is the rewards for virtue (according to your talents) and the punishments for not fulfilling your duties, which are doubly costly. If there is such a volume in the camp library, will you ask Mrs. Tyson to let you look up a sonnet of Shakespeare’s in which the line occurs “Lillies that fester smell far worse than weeds.”

Have had no thoughts today, life seems composed of getting up a Saturday Evening Post story. I think of you, and always pleasantly; but if you call me “Pappy” again I am going to take the White Cat out and beat his bottom hard, six times for every time you are impertinent. Do you react to that?

I will arrange the camp bill.

Halfwit, I will conclude.

Things to worry about:

Worry about courage
Worry about Cleanliness
Worry about efficiency
Worry about horsemanship
Worry about. . .

Things not to worry about:

Don’t worry about popular opinion
Don’t worry about dolls
Don’t worry about the past
Don’t worry about the future
Don’t worry about growing up
Don’t worry about anybody getting ahead of you
Don’t worry about triumph
Don’t worry about failure unless it comes through your own fault
Don’t worry about mosquitoes
Don’t worry about flies
Don’t worry about insects in general
Don’t worry about parents
Don’t worry about boys
Don’t worry about disappointments
Don’t worry about pleasures
Don’t worry about satisfactions

Things to think about:

What am I really aiming at?
How good am I really in comparison to my contemporaries in regard to:

(a) Scholarship
(b) Do I really understand about people and am I able to get along with them?
(c) Am I trying to make my body a useful instrument or am I neglecting it?

With dearest love,

Daddy

P.S. My come-back to your calling me Pappy is christening you by the word Egg, which implies that you belong to a very rudimentary state of life and that I could break you up and crack you open at my will and I think it would be a word that would hang on if I ever told it to your contemporaries. “Egg Fitzgerald.” How would you like that to go through life with — “Eggie Fitzgerald” or “Bad Egg Fitzgerald” or any form that might occur to fertile minds? Try it once more and I swear to God I will hang it on you and it will be up to you to shake it off. Why borrow trouble?

Love anyhow.

 

Cyclical ‘justice’ !

Brian Acton was networking with recruiters 4 years ago. Let’s check some of his tweets ….

and this one with facebook as well …

He and Jan Koum, started Whatsapp inc. four years ago. Today, Facebook bought Whatsapp Inc., a Delaware corporation, for $19 billion. Check out the the Media coverage and a document filed with SEC as well.

Crazy good, isn’t it ? !

Let the (word) War begin …

It has been nicknamed – “A Highly Anticipated Debate” !

Dr. William Lane Craig Vs  Dr. Sean Carroll !

greer

Source : Greer Heard Forum

“Next month I’ll be doing something related, although under quite different circumstances. On February 21 I’ll be debating William Lane Craig at the Greer-Heard Forum, an event sponsored by the New Orleans Baptist Theological Seminary. It will actually be a two-day event; a debate between Craig and me on Friday night, and follow-ups on Saturday from other speakers — Tim Maudlin and Alex Rosenberg for Team Naturalism, Robin Collins and James Sinclair for Team Theism. I believe the whole thing will be streamed live online, and it will certainly be recorded for posterity.” —said, Dr.Carroll, about this debate.

It will be fun for sure ..  If you are lucky enough to be in New Orleans register here.

THE Perfect Day !

Peter Roebuck’s account of this battle —–

THIS was a day to remember, a day upon which Brett Lee made a startling first appearance for his country and Sachin Tendulkar stood alone at the crease defying formidable odds, and with courage and skill keeping his wicket intact.

It was a glorious confrontation between old and new, mighty and promising, an expression of the great gifts of the game, the brilliance of batsmanship, the excitement of pace and the powers needed to reach the gods. Meanwhile, a superb leg-spinner bowled with artistry and cunning as he pursued his own landmark. It wasn’t a day to stay in bed. There haven’t been many better.

Lee was a revelation. Thrown the ball as samosa-time approached and showing not the slightest inhibition, Lee began by bursting through Sadagopan Ramesh’s loosely constructed defence with his fourth ball, whereupon the orange-topped paceman celebrated with undisguised joy. Probably he did not know that the previous Australian to strike with his fourth delivery was Fred Freer, later to make his name as a footballer with Carlton.

Recalled for a second spring-heeled spell from the pavilion end as the wind shifted around, Lee struck again as India’s first drop fiddled at a ball too fast to permit an opportunity to think again. It was a fine start by a young man prepared to be himself in this most intimidating arena. Already Lee had shown his spirit by losing his wicket as fast bowlers ought, swiping at something subtle and lifting it into the clouds. Immediately the crowd took him to its heart.

Soon Lee was rested. Throughout he resembled a colt running a few furlongs for the fun of it. Recalled to the crease in the gloaming, Lee responded with the fiercest spell of the match, an explosion of athleticism and endeavour that destroyed the Indian innings. First he broke through Mannava Prasad’s push with a fast inswinger that did not bother with such minor matters as bouncing and instead went straight to the stumps like some guided missile.

Seeing the wicket broken, the crowd roared. Lee is the sort of bowler popular in the public seats. He excites people with the incisiveness of his approach, with a vitality inevitably missing from more seasoned practitioners who’ve seen a thing or two and nowadays rely upon attrition and craft. Lee is not an innocent he comes from Wollongong way but he has the enthusiasm of youth. Also, his style is simple. He’s been blessed with pace, a most precious gift and not to be wasted upon timid souls.

Lee struck again a couple of paragraphs later, removing Ajit Agarkar with another searing inswinger that crashed through the batsman’s defence in a manner that brooked no argument. Nor was that all.

Lee was smoking and promptly greeted Javagal Srinath with a flyer that the lugubrious paceman could not subdue. Immediately Anil Kumble was struck on the helmet by another lifting delivery from a man whose run-up was long and smooth and whose action seems natural and not affected by any kink.

As it turned out, Kumble had no intention of surrendering his wicket lightly.

sachin 116

Meanwhile, Tendulkar stood firm like St Paul’s Cathedral in the blitz. Any fool can score runs against tame bowling. Anyone can impress in easy circumstances. Like a true champion, Tendulkar rises in the tightest corners. He, too, had to keep an eye on Lee’s yorkers and took evasive action as the speedster flung down a bumper. It was a tremendous struggle between them, as the master craftsman fought tooth and nail while the gregarious youngster streamed in.

Tendulkar alone could resist the force of this fierce assault. He seemed to be playing in a different match from anyone else except Sourav Ganguly. Unaffected by the wickets tumbling around him, and realising the need to push the score along, Tendulkar moved from caution to aggression as he launched a breathtaking attack upon the bowling. Eight long years ago he appeared in this land as a teenager with superb skills and enough spirit to fuel an entire team. Now he has reappeared as a man bearing responsibility and carrying it lightly, for he does not allow any situation to be his master. When Tendulkar reached his hundred the entire crowd rose in acclamation. His dismissal brought the crowd to its feet a second time.

It had been the perfect day. The visiting champion had scored a century, and a new fast bowler had arrived upon the scene.

This article was first published by Fairfax Media on December 28, 1999
Source :http://www.smh.com.au/sport/cricket/tendulkar-and-lee-create-the-perfect-day-20131011-2vci1.html