Friday, August 31, 2007

More pictures.



This is one of my favourites.. taken last week. The thing with candid shots is that you have to be a. prepared, b. have the undefinable thing called 'instinct for art' to know what is a great picture moment and what is ordinary and c. have the right equipment. I have long believed that a suitable long lens is what is needed to get the perfect shot. The problem is that long lenses tend to be somewhat dim/slow and do not give the crispness that a 40-150 lens tends to deliver. Also handheld shots with the lens fully racked out can be quite troublesome. That is why people spend so much on fast tripods like Bogen-/Manfrotto kits. I have a cheap Sunpak pan head which is neat for stationary objects but simply unsuitable for moving objects. Then again, shooting at night presents its own problems. Tricky light conditions and moving objects combine to make photographing them really difficult. The only solution is to jack up the ISO to something like 1000. I don't trust the sensor above that.. way too much noise. A really fast lens makes all the difference at that point. Antivibration, either built into the lens or the sensor is mostly useless at night. But f2.0 or wider would be very welcome.

As it turns out recently, I got to look at the Nikon 18-200 mm antivibration lens. There is nothing like it to compare on the market... I would like to see Olympus give us something like that. The problem is that Olympus makes good, but very expensive glass. But who knows, maybe I will get myself the next professional body from Olympus in two years time... and if that has built in antivibration for the sensor and a flip back display (with live-view) then that will be perfect. But expensive.

Tuesday, August 28, 2007

So much for the second law of thermodynamics (aka Pipe dreams of the scientifically unsound).

First allow me to direct you to this link on TG Daily telling you about the potential development of a 'water powered engine.'

Let me summarize how this engine might work: streaming water across an Aluminium/Gallium surface induces the catalytic breakdown of H2O into its component molecules H2 and O2. H2 bubbles away while O2 sticks to the Aluminium surface. H2 can now be burned in a conventional heat engine.

My objection: The bond energy for water is 458.9 kJ/mol which means that this is the energy required to dissociate a molecule of water into its component atoms is roughly twice this. That is quite a lot. Spontaneous dissociation may occur in the presence of the catalyst, but typically, the catalyst will be used up in the reaction. In this context, that would mean that the surface of the catalyst would be 'coated' with a layer of O2 which would prevent further catalysis. To regenerate the catalyst, one would have to 'scrub' the surface; and this will probably need more energy than we can recoup by burning the bubbled off H2. This is because of the Second Law of Thermodynamics, which tells us that one cannot gain any energy by making a spontaneous process run in reverse. An example: water flows downhill, and this is used to rotate turbines and generate electricity. If we had to pump the water uphill in the first place, we would be spending energy in that, and much more than we would recover it flowed downhill. Lesson: there are no free lunches.

Back from Chicago, yet again....

Yes, I was in Chicago for the last week on a training symposium. I had an altogether great time, attended some great classes and met some nice people. They have a beautiful facility there.. with a 600, an 800 and a 900 MHz instrument, all with cryoprobes, all Brukers. Although, our lab uses a Varian 800, I have always had a sneaking admiration for Brukers, which allow for more flexibility (I think). The most important thing I learned at the workshop was to stop butting my head out wondering about the physics and to just grab a ubiquitin sample and start recording spectra. They let us play with the 600 MHz spectrometer, and we had lots of fun.

After the workshop, I spent a very boozy weekend with my friend in Evanston. He works for a SSNMR lab at Northwestern... their magnets are not the super high res contraptions we use.. these are physicists' devices with fifty random wire leads and soldering wire all over the place. Extremely radical hardcore experimental physics.

We went to attend a Latin music festival at Grant Park.. that was a total disaster... remind me to maintain a safe distance from Latin music in the future. Chicago offers open air movie screenings at sunset every Tuesday in summer. Love that city.

Friday, August 17, 2007

Teatime.

Aah! Something to write/rant about before I leave for Chicago and leave my audience out in the cold for a week. First, a link to a bloke's post about how to make tea.

And now, my take on it. Drinking good tea is an Indian habit. Yeah, yeah, the Sri Lankans also drink tea. Chinese tea is an abomination we will not go into. Oh, and yes, while the Brits have been known to love tea, who has ever heard of English tea gardens? So, my point being that I have exclusive moral rights to lecture people about tea. Let me take this a few steps further. The best Indian, correction the best tea is Darjeeling, followed by Assam. The South's claim to fame are the Nilgiri tea estates, but when in in Tam-land, do what Tams do and drink your coffee without a fuss. So, I assert my rights as a Bong to lecture and exhort you to drink tea.

So, how does one go about it?
1. Get Darjeeling/CTC tea leaves (or Assam). Tea bags are a Satanic creation. Avoid them. Tea granules are a creation of minor devils. Avoid them too.
2. A saucepan to boil water in. A heater.
3. Boil water in the saucepan.
4. Prepare a kettle with tea leaves. Depending on how strong you want the tea, perhaps one teaspoon, lightly heaped, per cup.
5. Just before the water boils, pour a small amount into the kettle. This is to pre-heat the tea leaves and the kettle and prevent accidental cracking when the boiling water is poured in.
6. When the water starts to boil, pour into the kettle. Stir, close the lid and put the tea-cosy on.
7. Let the tea soak for 3-5 minutes. Stir once more and filter into cups.
8. Add a spoon of sugar/honey and a twist of lemon.
9. Sit back, open up the Anandabazar Patrika or the Statesman and light up the Gold Flake.
10. Sip.

Following this will allow you to enter the blissful world of the Bong for a brief while, provided you are faithful to the ritual. (There are other things involved like cursing the Centre's step-motherly attitude, cursing the fates for Dada's bad luck, etc). If you can keep this up for a lifetime, you will be elevated to the rank of Honorary Bong.

Contrary to rumour, drinking tea does not confer virility or sex appeal.

Monday, August 13, 2007

The end of everything.

I read Arundhati Roy's essay 'The End of Imagination' while on the bus to Chicago a couple of months ago. As always, I was awestruck by AR's prose, her impassioned appeal to sanity, the use of those formidable skills which make her such a respected writer used with elan. The topic she discusses is of especial relevance now, rather than ever. Just before his rather ignominious departure, Blair initiated steps to enhance England's nuclear deterrent, at a cost of 25 Billion pounds. Why? Who are these enemies that England must be guarded against? North Korea is fighting hard for the unfreezing of a paltry 35 million $ in some off-shore account as a price for standing down its nuclear programme. How can such a country, starving and beggared ever begin to be a threat to England? The real threats are racial strife in inner cities, the vanishing jobs and the disillusionment of the laid-off who were promised that unfettered economic growth would bring milk and honey to everyone, but has simply deprived millions of everything. Those 25 billion pounds could have been better used to improve hospitals and bring back jobs where they are needed. But is anyone listening.

So, back to nukes. The world would be a much better place with no nukes at all. None. Nada. Terms like "credible deterrent", and the "doctrine of mutually assured destruction" make sense only when the enemy thinks and acts like you expect him to. What of the dispossessed, the starving and dying, the miserable and the wretched? They who hold, with good reason that the economic policies endorsed by London and Washington, and enforced by the World Bank are directly responsible for their agony. They who would share that agony with those who have caused it. They who would seek revenge in the searing nuclear fireball. What protection is there against the truly committed fanatic? None whatsoever, except atonement and an honest effort to reverse the injustice of generations. That is where these gigantic military budgets should go. Men cannot reach for the stars by treading on the dying bodies of other men. The only way out of this state is to beat our swords into ploughshares. If only our leaders understood that.

Fail-Safe is a 1962 book by Eugene Burdick and Harvey Wheeler which deals with the terrible spectre of accidental nuclear war when a wing of Vindicator nuclear bombers receive an erroneous message to conduct a full strike on Moscow. With all radio communications shut down, their commander leads a penetration of Soviet airspace. The alarm bells start going off in Washington and Moscow at the same time. While the leaders of the two superpowers try to reason their way through the crisis, the Vindicators continue on their path, true to their orders, each one of them carrying ordnance worth 40 Megatons, enough to scorch the earth. The Russians scramble their best fighters, but even with the USAF advising them, they are unable to shoot down all of the Vindicators. The US President then comes to a terrifying decision: the sacrifice of Abraham. The obliteration of Moscow must be met with an equal bloodletting on the American side, else the reprisal will be too horrific to imagine. Minutes after Moscow is hit with 80 megatons, the President orders a Strategic Air Command bomber orbiting New York to lay an 80 megaton in the same burst pattern. An eye for an eye. This book brings to the forefront the fact that we are playing with fire, and we do not have the fortitude to stand fast on the side of sanity. The only victors in a nuclear holocaust will be the cockroaches. Surely that is something worth contemplating.

Friday, August 10, 2007

Coincidence: trivia.

Maurice Jarre, a French composer of considerable talent wrote the music for the towering epic Lawrence of Arabia, directed by David Lean. Here is a performance by the Royal Philharmonic Orchestra, conducted by Jarre. Now, this cinema was about the Arab revolt against the Turkish Empire against the backdrop of WWI. Jarre's son, Jean-Michael Jarre wrote the music for Peter Weir's landmark film Gallipoli, which has Mark Lee and an unbelievably young Mel Gibson as two friends who are part of the ANZAC troops holding the island of Gallipoli against the Turks in WWI.

Thursday, August 09, 2007

Phoolan Devi/ Bandit Queen.

Here is the link to Arundhati Roy's review of Shekhar Kapoor's 'magnum opus', Bandit Queen, the story of Phoolan Devi.

Terrorism and the Indian State-I

Terrorism and the Indian State.

Contrary to the popular perception of India as a peaceful, perhaps even somnolent land, this country has known violence in its many forms for as long as memory goes. Why then, this perception; that things are going awry at this point?

Let us start with the question ‘who is an Indian?’ This is a very difficult one to answer; for while identification with a religious or linguistic group, identification with the nebulous idea of a greater Indian nation is difficult. The people most recently responsible for giving the people of the subcontinent a national identity were the British. Truly, there is nothing, which brings diverse people together like a common enemy. But for the most part, there have been precious few people who have had the strength and political acumen to forge this amazingly heterogeneous people into one coherent nation; and one of the most enlightened of these was Emperor Ashok the Great. At the height of its power(250 BC), the Mauryan Empire extended across the extent of modern India and onwards to present day Pakistan and beyond to Kandahar. But it is to be remembered that this forging was done on the anvil that was the battle of Kalinga. The Daya river, which flows by the historic Dhauli hill ran red with the blood of a hundred thousand Oriyas before Kalinga was brought to its knees by the might of Patliputra. The reason why Ashok is called ‘the Great’ is not the conquest that he achieved, but the lesson he learned therefrom. Kalinga ended with Ashok being so sickened by the bloodshed that he turned to Buddhism for solace and entered the evening of his life as a force for enlightenment and peace in South-East Asia. However, the post-script to this story is the decline and fall of the Mauryan Empire a scant fifty years after the end of Ashok’s rule.

There are two main points to this story: the first is that a pan-Indian identity is an externally imposed one and not a natural one. When such an identity competes with a more immediately comprehensible one, such as being a Tamilian, an Oriya or a Goanese, it tends to be eclipsed. Regardless of what our leaders tell us, at this point in history, being a Muhammedan is also somewhat at odds to being an Indian.
The second lesson from our brief historical diversion is that every empire has its own life cycle, just like people do. Empires are born as small movements, they grow in strength and popularity and they grow also by conquest. Sometimes, they are fortunate and enjoy an afternoon of peace and prosperity, when the arts thrive. But this is also the harbinger of eventual decline. This decline starts at the periphery when the capital fails to impose its continual will on the inhabitants. Once set in, the rot can be arrested, but almost never reversed, and the once glorious empire will be dismembered. But hope survives. And this hope tells us that out of the ashes will rise other empires, perhaps so glorious that they will eclipse past achievements a thousandfold. Such is human history. But for the first time, things are different. For the first time, the species has the capability to inflict appalling damage on itself and on Earth.

So again: who is a terrorist? Anyone who is willing to trade civilian lives to attain his goal, which is usually contrary to the government of the day is a terrorist. So, was Subhas Bose a terrorist? Was Tipu Sultan, the Tiger of Srirangapatnam one? Was Chhatrapati Shivaji one? These men were all heroes. But that is the perspective that is afforded by history. What of the opinions of those, who lived through those tumultuous events, which shaped history? Why do we feel that what is happening now is happening for the first time? What is so unique about this century?

A number of different things: first, the very idea that human lives are supremely important is a relatively new one. The idea that man owns this world, and is not merely a part of it is a very Western and a very Christian idea. And after the industrial revolution, it also appears to be very true. Hence, the hullabaloo about human rights. (strictly speaking though, ‘human rights’ actually means ‘Western human rights’: events of the past… say five hundred years stand witness to the fact that the West is quite amazingly hypocritical in its attitude towards the others whom it has enslaved, bombed, burned, shot, spread plagues amidst, and now sells overpriced merchandise in shiny plastic wrappings to). Hence; the outrage. Hence; the media coverage.

The truth, if it may be termed as such, is that the human condition, for the greater part has never been milk and honey. Certainly, it is possibly to live in peace, breathe clean air and drink clean water… but as the Mahatma once said.. ‘the Earth holds enough for every man’s need, but not enough for even one man’s greed’. The East, the Orient, the wogs, call them what you will… have historically held a philosophical perspective which does not imply an adversarial relationship between man and his environment. The colossal arrogance in believing that we can and should mould the world in our image is a Western one. Certainly, the West is also the home of pure rationality; but given the current leadership, one is inclined to believe that Kant, Newton and Lagrange were deviants rather than the supreme products of the Western thought-pool as they are traditionally shown to be. It is this appalling concentration of human wealth in a few hands and the shameless way in which these people have beggared the rest of the world that is the cause for all the discord today. Of course, it is only perceived as being somewhat unfair, because when the haves are not looting the have-nots, they are preaching the equality of man to them. It is this peculiar dichotomy between the words and the actions of our economic (and therefore moral) superiors, which is slightly confusing. Hence terrorism.

Undoubtedly, there are always and will be always be evil men who seek to pervert the hearts and minds of other men and lead them to despicable acts. There are always men who will, for reasons of personal ‘glory’ or some warped justification advocate violence against other people because they live across the river, or mountain, or have brown or yellow skin, or are circumcised, or prefer to break open boiled eggs at the little end. But for the most part, people are content to live and let live. It is only when others find it expedient to deprive them of their ancestral grazing lands and lock them up in ‘reservations’, or expect blind obedience in exchange for bread infested with maggots that people rise up in revolt.

.. to be continued.

Tuesday, August 07, 2007

4/3rds sensors and signal/noise.

S/N or signal to noise ratio is something that spectroscopists of all brands dream about maximising. There is a small slogan on our lab whiteboard:

Sensitivity x Resolution x Convenience = Constant.

This sums up the picture very succinctly. Right now, I was busy reading a pep-me-up article about the 4/3rds system. Why did I need the pep-me-up? Because of the disgusting unwillingness of third-party companies to provide cheap tele lenses for the 4/3 mount. Undoubtedly, Nikon and Canon make brilliant cameras, but I have used an E-500 for the better part of ten months now, and I am delighted with its performance. I would not exchange it for anything short of, say a D200. But there is a lot of crap information floating around which needs to be taken with a massive truckload of salt.

1. Sensor Area:
The dimensions of different sensors are given below in mm:
Point & Shoot 2/3 = 6.6 x 8.8 Area(sq. mm) = 58.8
4/3 = 13.0 x 17.3 Area(sq. mm) = 224.9
Sigma/Foveon = 13.8 x 20.7 Area(sq. mm) = 285.66 % of 4/3 sensor area = 127
Canon APS-C (almost equivalent to Nikon APS-C) = 14.8 x 22.2 Area(sq. mm) = 328.56 % of 4/3 sensor area = 146
Full Frame = 24 x 36 Area(sq. mm) = 864 % of 4/3 sensor area = 384

Barring gigantic leaps in semiconductor technology (which I do not rule out), the trend should be towards improving the performance of existing signal processing algorithms and optics, as we seem to be stuck with small sensors for now.

Monday, August 06, 2007

Moving, etc.

I am between leases at the moment... which makes a temporary refugee... however a friend has the opposite problem: two valid leases for much of August.. so that is a partial solution.. however, most of my stuff is still scattered across two basements, and that is pretty sad.

More girl power!!!

Guest Article.

David Usborne
New York, Aug. 5: A new analysis of census data in the United States is upending long-held assumptions about women still lagging behind men in wages.
While it may remain true on a nationwide basis, it is no longer holds for younger females in some of the country’s largest cities, notably New York and Dallas.
Researchers at Queens College in New York show that young women in this city actually began to overtake their male counterparts in earning power in 2000 and have continued to widen the gap. By 2005, women of all education levels aged between 21 and 30 were making 117 per cent of men’s wages.
The study appears to be a reflection both of an accelerated rate of migration of young women to New York and other large urban areas where job opportunities are more plentiful and greater levels of education attainment among women compared with men.
Women in their 20s are also making more than men in Chicago, Boston and Minneapolis, while the gap is greatest in Dallas where they are taking home 120 per cent of what men are managing.
Nationally, however, a more familiar pattern still holds with the median income for women set at $25,467, compared with $28,523 for men, the report says. Some experts predict that the changing dynamics will soon extend to older age groups. Traditionally, women have fallen further behind in earning power as they have aged, either because they have taken to working part time or hit a glass ceiling in the workplace.
But in New York, at least, even women in their 30s are already making as much as men.
THE INDEPENDENT

Friday, August 03, 2007

IQ x Sexual Activity = Constant.


Finally explained... why smart people never get laid!!

This graph plots the percentage of Wellesley undergraduates who are still virgins. Let me point out some important facts here:
1. None of the studio arts students are virgins.
2. The highest percentage of virgins is 83%: in Math.
3. Physics does not even figure on this list.
4. Wellesley is a liberal arts women's college.

Feel free to draw your own conclusions about the sexual fate of (male) physicists at premier institutions (read schools which do not label themselves as "liberal arts colleges".. but are better described as "research universities").

This links to the original article found, of all places, on SlashDot.
http://www.gnxp.com/blog/2007/04/intercourse-and-intelligence.php

And the PubMed (and why not? we are scientists here..) reference to a detailed study is here.
http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=10706169&dopt=AbstractPlus

Scary Terminator Robots out already.

See the article here.Link

Thursday, August 02, 2007

Extreme Photography.

This bloke took an Olympus E-300 to the Arctic. Here is the story of how he fared and how his photographs turned out. Link

Harry Potter Rap Songs?

Oh dear me, by the great prophet Zarquon... check out this rap video based on the Harry Potter series.Link

Tears for a House Elf.

Dobby copped it.. or rather he was murdered by Bellatrix Lestrange. Dobby went to wherever it is that free elves go to and his mortal body lies buried near Bill and Fleur's seaside cottage. Rachna wrote a memoriam to him.

PhD ETA: 30 years?

For people who think that the finish line is somewhere on the other side of the Oort Cloud (both in a spatial and in a temporal sense).. here is the inspiring story of a bloke who finished his PhD.. after 30 years. Well, he did take time off to make some music..