Showing posts with label Will Durant. Show all posts
Showing posts with label Will Durant. Show all posts

Tuesday, August 8, 2017

Varahamihira and the Eclipse: A Question of What is Science

Amidst all the Trump related shenanigans and the perennial scandal plagued 'Breaking News' about the American presidency a silver lining is the excited talk about the coming total eclipse. Today NPR (National Public Radio) featured a nice segment on obsessive eclipse watchers. As luck would've it I came across a blog about an ancient Indian astronomer that ended with a plea that Indian school boys should learn about such simple to learn science that India once had. I commented that only God can save science in India and naturally the brickbats came along. But here's why I said so.

The NPR segment on 'Eclipse chasers', also called, the anchor highlighted, 'umbraphiles' or 'shadow lovers' was interesting precisely because it brought to attention people obsessed with eclipse watching. Donald Liebenberg, 'a professor of astronomy at Clemson University in South Carolina', has seen more eclipses and spent more time in 'totality' than any one alive. He, NPR said, pioneered using aircraft to follow the shadow of the eclipse including one time the use of the famed Concord. Read the link in the reference for more interesting details.

Francis Bacon
NASA, of course, leads the efforts on public education regarding the eclipse with lots of material on its site. NASA also has sections devoted to study of eclipses across human history. An Irish astronomer has discovered an evidence in Ireland that shows precise knowledge of eclipse that might correspond to the one that occurred in November 3340 BCE!!! Babylonian and Assyrian astronomers, the page informs, were able to predict eclipses with fair accuracy in the 8th or 10th century BCE.

The Royal Society emblem with its motto 'Nullius in verba' (Take nobody's word for it)

Can the Greeks be far behind. NASA page quotes Archilochus' poetry, referring to the eclipse of 6th April 647 BCE, "Zeus, father of the olympians, made night from mid-day, hiding the light of the shining Sun". "Around 460 BCE, the Greek historian Herodotus wrote that Thales was able to predict the year when a total solar eclipse would occur. Details of how this prediction was made did not survive."

John Milton, who peered at the heavens using the telescope Galileo made, wrote in Paradise Lost "As when the Sun, new risen, Looks through the horizontal misty air, Shorn of his beams, or from behind the Moon, in dim eclipse, disastrous twilight sheds On half the nation and with fear of change perplexes monarchs".

The blog I came across was by, Rangarathnam Gopu, an admirer of Varamihira. Gopu has written a couple of other blogs I liked, about Lavoiseur and his touring of US for sites related to science. Varahamihira is more popularly known as the father of the pseudo-science astrology and Gopu is irked by that. He draws attention to few Sanskrit verses that Gopu underlines for Varahamihira's scientific temperament.

While most Indians explained eclipses, like the Chinese did, with myths about a snake swallowing up the moon Varahamihira 'reasoned' that it was merely a shadow passing. Let's pause here for a moment.

Astronomy is the most ancient science simply because man, across cultures, looked up at the heavens and worshipped the powers unknown and yet tried to understand what lay yonder. Will Durant differentiates between science and philosophy in "Story of philosophy". "Soon as a field of inquiry yields knowledge susceptible of exact formulation it is called science. Every science begins as philosophy and ends as art; it arises in hypothesis and flows into achievement".

The study of history of science tells us a story of the trajectory of ideas from speculation, then maturing into logical reasoning and finally becoming science when it fulfills the conditions of scientific framework.

Priyamvada Natarajan, professor of physics and astronomy at Yale, in her very readable book "Mapping the heavens: The radical scientific ideas that reveal the cosmos", traces the development of ideas and how they gained acceptance and what that arc tells of us in turn. "My goal", Privamvada states,  "is to recount how scientific ideas have been developed, tested, debated, and eventually accepted." "How scientists grow to accept new ideas and rewrite their knowledge maps not only reveals how science works but also provides insights into what catalyzes these shifts in belief".

In the history of science as an intellectual endeavor the most consequential tectonic shift happened with the establishment of the Royal Society in London in 1660. The founders of the society were inspired by the English philosopher Francis Bacon's ideas of experimentation and principles of science.

The Royal Society adopted as its motto, 'Nullius in verba', 'on the word of no one' or 'take nobody's word for it'. If nobody's word is to be taken then how are words, theories, to be judged? Here steps in the patron saint of Royal Society, Francis Bacon who had supplied the Society's founders with the principles to evaluate science. Experimentation and provability.

James Gleick in his biography "Isaac Newton" wrote about the formation of Royal Society, "dedicated to information flow. It exalted communication and condemned secrecy". "The society's founders explicitly worried about the use of any language. Philosophy had mired itself in its own florid eloquence. They sought 'not the artifice of Words, but a bare knowledge of things'. Now it was time for plain speaking, the most naked expression, and when possible this meant the language of mathematics."

Andrea Wulf in her critically acclaimed biography "The invention of nature: Alexander Von Humboldt's new world" writes about the Royal Society in Humboldt's day, "They conducted experiments, 'electrified' people, learned about new telescopes, comets, botany and fossils. They debated, exchanged results and read letters that has been received from scientifically minded friends and foreigners alike." Humboldt, a member, was thrilled and remarked after a meeting that "all scholars are brothers". Humboldt incidentally was obsessed with traveling to India but was scuttled by the East India Company for over 20 years. Wulf thinks the Company was probably wary of Humboldt visiting a colony.

Modern science or what can be called science today requires observation, recording of data, reasoned conclusions that are supported either by proven theories or mathematics or reproducible in a lab. If Gopu had stopped with talking about Varahamihira's verses as evidence of scientific 'temperament' in a different era I'd have had no problem with it but he advises school students to learn it as 'science'. No it is not. Science has long since moved much farther than what can be called 'speculation' or mere 'hypotheses'. If Varahamihra had tabulated observations or provided better reasoning, even if not absolutely mathematical by today's standards, it could be considered as the beginning of science. If Gopu had narrated Varahamihira's verses as part of a broad history of man's expanding understanding I'd have applauded but he lapses into a puzzling broadside that India's school children are taught as 'though only Europeans explained them'. He even invites college science teachers to use the blog material. Sigh. Sigh. Sigh.

Tamil chauvinists have used verses from Tamil literature to claim knowledge of atomic fission and Newton's Third Law etc. While I understand the common angst by many Indians that the common school boy grows up without knowing what a vibrant intellectual and scientific community India once was and thinks that everything 'scientific' originated only in Greece and later in Europe and recently in America. George Gheverghese Joseph's book "The Crest of the Peacock: Non-European roots of mathematics" could be recommended, a tad hesitatingly, for giving a sweeping narrative of contributions to mathematics by non-European civilizations. Interestingly he omits any mention of Varahamihira. I said 'hesitatingly' because the book, published by Princeton University Press, is authored by a person whose academic qualifications are not detailed beyond 'degrees in UK'. Reading his chapter on Indian math, far better than any most Indian enthusiasts write, I found it to be a little over-eager and less becoming of a book published by a university press, that too Princeton university.

While I'm all for laying out historical antecedents and for anyone to learn history in its totality and not exclusionary the urgent need in India is to understand science as a modern discipline. A recent ugly spectacle is the collective ululation about the scientific genius of Abdul Kalam, a man who cannot be called a scientist by any relaxed definition of that word. I'll give a list of wonderful books on science in the references. They're all a treat to read and sadly, most Indian students are not only blissfully unaware of such books many cannot even grasp why they're beautiful. The day an Indian student knows that John Gribbin's 'In search of Schrodinger's cat' is science while Fritjof Capra's 'Tao of physics' is not science he or she would become a beacon of hope in India.


References:


1. Rangaratnam Gopu's blog http://varahamihiragopu.blogspot.in/2014/10/varahamihiras-eclipse-proof.html
2. Kerala Mathematicians and Isaac Newton. Interview by George Joseph http://www.thehindu.com/features/friday-review/history-and-culture/dr-george-gheverghese-joseph-tsays-the-work-of-kerala-mathematicians-influenced-their-european-counterparts/article7818063.ece
3. Eclipses in history https://eclipse2017.nasa.gov/eclipse-history
4. Eclipses through traditions and cultures (NASA site, that includes a link to a Hindu site) https://science.ksc.nasa.gov/mirrors/gsfc/omni/eclipse99/pages/traditions_Calendars.html#India
5. Scientific method https://en.wikipedia.org/wiki/Scientific_method
6. Royal society https://en.wikipedia.org/wiki/Royal_Society
7. NPR segment on Eclipse chasers http://www.npr.org/sections/thetwo-way/2017/08/08/539553696/go-see-it-eclipse-chasers-urge-your-first-time-is-always-special

Recommended books on Science:


Disclaimer, I've not read all of the books below. Most are recommendations based on why I bought them for reading, hopefully some time.


  1. Structure of Scientific Revolution - Thomas Kuhn
  2. The Logic of scientific discovery - Karl Popper. Also certainly check out his 'Open society and its enemies'
  3. In search of Schrodinger's cat - John Gribbin. AMAZING MUST READ SIMPLE BOOK on quantum physics and its history.
  4. A brief history of time - Stephen Hawking. Obviously.
  5. Feynman Lectures - Richard Feynman. And his "Surely your'e joking Mr Feynman". Also check out other titles by him.
  6. The immortal life of Henrietta Lacks - Rebecca Skloot. Understand how medical science advanced and institutional racism in the then American medical fraternity.
  7. Ascent of man - Jacob Bronowski. A TV series turned into a thrillingly readable book. 
  8. Emperor of maladies - Siddhartha Mukherjee. Debut book that garnered the Pulitzer and a riotous read of scientific advancement in the taming of cancer.
  9. Selfish gene - Richard Dawkins
  10. What is mathematics - Richard Courant and Herbert Robbins
  11. Joy of X - Strogatz
  12. The Fellowship - John Gribbin. About the Royal Society
  13. The Sixth extinction - Elizabeth Kolbert. Critically acclaimed Pulitzer winner.
  14. The strangest man: The hidden life of Paul Dirac, Quantum genius -- Graham Farmelo
  15. Einstein - Walter Isaacson. (For the more scholarly, check out 'Subtle is the Lord' by Abraham Pais)
  16. The vital question: Energy, evolution and the origin of complex life - Nick Lane.
  17. Power, sex, suicide:Mitochondria and the meaning of life - Nick Lane
  18. Perfect Theory: A century of geniuses and the battle over general relativity - Pedro G. Ferreira. Lucid and gripping.
  19. The beak of the finch - Jonathan Wiener. Pulitzer winner.
  20. Why evolution is true - Jerry Coyne
  21. Faith vs Fact: Why Science and Religion are Incompatible -- Jerry Coyne
  22. Polio - David Oshinsky. Pulitzer winner for a grippingly told drama about the invention of vaccines that defeated a scourge of humanity.
  23. The Age of Wonder: How the Romantic generation discovered the beauty and terror of science - Richard Holmes. A literary and scientific tour-de-force.
  24. The idea factory: Bell Labs and the great age of American innovation - Jon Gertner. How individual giants like Shockley, Bardeen and an American corporation and American government colluded and competed to unleash an era of creativity.
  25. The man who knew infinity: A life of the genius Ramanujan -- Robert Kanigel. As always the best books on India and Indians are by westerners. Incidentally on even the competing movie versions it was Danny Boyle who made the better movie compared to a pathetic Indian attempt
  26. Cells to civilization: The principles of change that shape life - Enrico Coen. A chapter begins by discussing Cezanne's refusal to correct an imperfection in a painting and glides into an analogy of the complexity of life. It might take aeons for a book like this to come from an Indian university by an Indian professor. One can hope though.

Monday, June 6, 2016

Isaac Newton and the Divorce of Philosophy and Science

A recent Tamil book makes the case that Erwin Schrodinger was inspired by Vedanta in formulating his theories on quantum physics. The authors then proceeded to speciously argue for the continued relevance of Hindu Philosophy, knowledge systems, to today's world. In this backdrop it is pertinent to trace the point at which science roared forward unmoored from philosophical speculations and in the process creating its own paradigms. Isaac Newton marks the clear point at which science divorced itself from what was hitherto called philosophy.

Concluding the chapter on Aristotle Will Durant wrote "all the world awaited the resurrection of philosophy". Starting with Roger Bacon in the 13th century Europe saw a fervid efflorescence of genius. Tyco Brahe, Kepler, Copernicus, Galileo, Vesalius and Harvey took human knowledge into new frontiers. "It was an age of achievement, hope, and  vigor; of new beginnings and enterprises in every field; an age that waited for a voice". The voice was embodied in Francis Bacon.

Isaac Newton(Image Courtesy Wikipedia)
The explosion of knowledge that accompanied what Durant called "Age of Reason" was unprecedented in human history. Sir Thomas Bodley who established the Bodleian Library (1598) in Oxford "obtained from the Stationers Company a grant whereby the Bodleian Library that he had established at Oxford (1598) was to receive a copy of every book published in England". France and Germany saw similar libraries. Germany made elementary education compulsory for both sexes in 1565, rapidly other European cities followed. The Church which receives a justifiable rap for its confrontation with science nevertheless played a vital role in furthering the goal of education. "In France every parish had to maintain an elementary school". "In 1685 the Christian Brothers opened what was probably the first modern institutions for the training of elementary school teachers". Nearly two hundred universities were opened between 1550s to late 17th century.

Isaac Newton, born on Dec 25th 1642 in Woolsthorpe, entered a world where slowly but surely science, thanks to Francis Bacon, was stepping out of the shadows of philosophy. Bacon, James Gleick's biography of Newton says, lamented "all the philosophy of nature which is now recieved, is either the philosophy of the Grecians, or that other of the alchemists...The one is gathered out of a few vulgar observations, and the other out of a few experiments of a furnace. The one never faileth to multiply words, and other ever faith to multiply gold". Bacon, Gleick points out, "argued for experiment".  When the Royal Society was established in 1660 with the motto 'Nullius in verba" Bacon was adopted as the patron saint. The age of telescope and microscope had arrived. "It (the Royal Society) exalted communication and condemned secrecy".

Robert Hooke who served as the Curator of Experiments in the Royal Society wrote in his "Microphagia", tat science should now "return to the plainness and soundness of Observations" and away from what it was hitherto, a "work of the Brain and Fancy".

A society for science dedicated to communicate faced the question of which language to use. Though Latin was the obvious choice the members felt "it was time for plain speaking, the most naked of expression, and when possible this meant the language of mathematics". The Royal Society was not alone, soon Europe saw a host of societies established where, most importantly, men of science congregated and debated without the constraints of social status. Gleick quotes an entry from Samuel Pepys's diary on how the Society organized science exhibitions for Londoners. This was a quantum leap. Let's return to Newton's story.

Thanks to Stokes, the schoolmaster at Grantham where Newton attended school, and his uncle, a rector, Isaac Newton was sent to Trinity college at the University of Cambridge for further studies. A civil war, plague, a rebellion and a regicide (if hanging Cromwell's corpse could be called so) formed the climate in which Newton attended college. Newton read avidly, particularly Aristotle. Aristotle idea of "motion" was elastic enough to consider a "piece of bronze becoming a statue" as motion. That meant, Gleick says, "philosophers were not ready to make fine distinctions between velocity and acceleration". Aristotle had famously said "Plato is my friend, but truth my greater friend". Newton added Aristotle to that and wrote in his notebook "Plato amicus Aristoteles magic amica veritas".

Descartes had earlier married algebra to geometry yielding a new discipline. "He treated one unknown as a spatial dimension, a line; two unknowns thus define a plane....Equations generated curves; curves embodied equations". To that Newton added the question of motion which embraced the infinite and the infinitesimal together. "To measure curvature was to find rate of change".

In 1665, soon afterNewton graduated, Cambridge was closed due to plague ravaging England. Back in Woolsthorpe Newton worked alone and laid the foundations of calculus, theories on gravitation and light. Newton returned to Cambridge in 1667 and was elected a fellow. He took the oath to "embrace the true religion of Christ with all my soul". "Chastity was expected. Marriage was forbidden". In 1669, at the age of 27, Isaac Newton became the Lucasian Professor of Mathematics. The mathematician's heart was in physics though.

Newton's paper on the nature of white light was read in the Royal Society in 1672. Newton, Gleick says, "declared triumphantly-"that light consists of Rays different refrangible". Hooke objected to Newton's theory that proposed light was "corpuscular" in nature, particles. Newton responded that "that followed from his theory and not the other way round". Dutch scientist Christiaan Huygens also joined the debate on the "wave theory" side. Newton felt insulted and wanted to withdraw from the Royal Society. "He had tried to show how science is grounded in concrete practice rather than grand theories". As these debates raged Newton, in 1675, reached another milestone. In the seventh year of his fellowship Newton was required to take the "holy orders and be ordained to the Anglican clergy". Gaelic notes "England's universities were above all else instruments of Christianity". Newton was spared the ordeal by the King who exempted the "Lucasian professorship, in perpetuity, from the obligation".

Hooke and Newton would clash again when the "Principia Mathematica" was published. Both Hooke and Newton had rejected the Cartesian idea of "vortices" to explain planetary motion. Both were circling around the ideas that "a body orbiting another in an inverse-square gravitational field" would trace an elliptical curve. Conversely, they also realized that a gravitational force law to describe a body tracing an elliptical curve around another body can only be a "inverse-square law". Hooke did not have mathematical proof but Newton did. Edmund Halley and Flamsteed who were calculating data about meteors supplied Newton with theories and data. Newton, Gleick shows in scintillating pages, went where no philosopher or philosophy went. Book III, The System of the World, "gathered together the phenomena of the cosmos. It did this flaunting an exactitude unlike anything in the history of philosophy". Gone are the flights of fancy of a philosopher or dreary sophistries of reasoning and in its place science arrived with exactitude. Hooke wanted credit for the inverse square law, which in reality was nothing more than a guess until Newton supplied the mathematical proof. Newton was irked and he called philosophy a "litigious lady that a man had as good be engaged in law suits". Halley published the Principia out of his funds.

Newton was charged with promoting atheism, a dangerous charge in that era.Will Durant writes "he appended to the second edition a general scholium on the role of God in his system". Though Newton kept up the appearances of a devout Christian in private he was anything but. Gleick says he preferred writing "AC (after Christ) instead of AD". Newton questioned the idea of trinity, a heretical and dangerous sacrilege then. To Newton Christ was less than God the Father. Though celibate Newton confessed to not only sexual thought but charged his friend Locke of having tried to entice him with women.

Hooke died in 1703 and Newton ascended to the power at the Royal Society. In 1704 Newton published his next major work "Opticks" which revolutionized the understanding light. Along with Opticks Newton published  a paper "On the Quadrature of Curves" that laid down the fundamentals of Calculus.  German mathematician Leibniz who had corresponded with Newton on what he called "fluxions" claimed that he too was the inventor of this new mathematics. As president of Royal Society Newton was judge, jury and prosecutor. Newton literally forged documents in his favor. History has now declared both Leibniz and Newton as co-inventors of Calculus.

What did Newton, specifically the Principia, achieve? James Gleick is categorical, "Newton had made claims that could be tested". In 1733 the French Academy of Scoences proved Newton was correct that the earth was "broader at the equator". Gleick is emphatic, "The Principia marked a fork in the road: thenceforth science and philosophy went separate ways". "By mathematizing science science, he made it possible for its facts and claims to be proved wrong". Conceding that Einstein's Relativity shook the world of Newtonian determinism Gleick cites Thomas Kuhn who suggested that "Einstein had turned science to problems and beliefs". However, Gleick cautions, "Einstein did shake space-time loose from pins to which Newton had bound it, but he lived in Newton's space-time nonetheless: absolute in its geometrical rigor", "he happily brandished the tools Newton had forged".

Isaac Newton was celebrated in prose by Alexander Pope and Wordsworth, William Blake drew a portrait of him, Voltaire studied him and literally proselytized for him in France, he was knighted and when he died nobles were his pall bearers and he was interred in the Westminster Abbey.

Portrait of Newton by William Blake (Image courtesy Wikipedia)


"Nature and Nature's laws lay hid in the night
God said, "Let Newton be!", and all was light" --- Alexander Pope

"Newton with his prism and silent face
The marble index of a mind for ever
Voyaging through strange seas of thought alone" --- William Wordsworth

Science has decisively outpaced philosophy and America, the land of pragmatism, which became the leader of science, had little use for European style sophistry. No one embodied the American spirit of science better than Richard Feynman. In Feynman was a spirit of irreverence and absence of philosophy unlike Einstein who read Kant as a child. Philosophy does not even provide the questions anymore let alone answers. Schrodinger owed to illicit sex as much as he owed to Vedanta for inspiring his theories.

The questions that the authors of the Tamil book failed to ask where: Why is it that it took an Austrian scientist to find the ideas in Vedanta that could inspire a scientist and not any Indian scientist? What in the Austrian scientist's Viennese education enabled him to see in Vedanta what no Indian scientist did? How many Indian exponents of Indian philosophy arrive at the same conclusions? Above all what paradigms of the Vedic era are relevant for science today? I'll write a detailed review and rebuttal of the book later.

The traffic of knowledge across the European continent is staggering in scope and requires a meditated appreciation for the scope at which it occurred. Ideas, amidst turmoils of wars, flowed in all directions. Ideas from Frances, Netherlands, Germany and England all collided and created a new world. That books written in France, Germany and England were translated, shipped to other countries and debated in scientific circles providing a magnificent intellectual stirring is a fact that should astound us, those who live in this modern social media age, on a grand scale. What is even more important is how they were eager to learn from others and not mired in petty nationalist chauvinisms. That too, given the kind of era it was, passes comprehension.

This was to be a book review of James Gleick's "Isaac Newton" but morphed into a different tone. Gleick's book is very mediocre. The narrative is uneven and his extensive quotes in the English of that era are irritating to read. What is really a letdown is Gleick's inability to explain science in a more lucid manner. This is shocking considering that Gleick's biography of Richard Feynman, "Genius", was critically acclaimed both for the sensitive portrayal of Feynman and for the lucidity of explaining esoteric concepts like Quantum Dynamics. I read portions of Will Durant's magisterial 11 volume "Story of civilization", specifically, volumes "The age of Reason" and "The age of Louis XIV" after I finished Gleick's book. Durant, who wrote nearly 40 years ago and was no scientist, covered all the material that Gleick, writing in 2003, covers. Durant's explanations of the theories and their significances are spot on. And, as only Durant can do, he provides a panoramic perspective of that era. Gleick's book should be read only because Durant's 11 volume series is out of print.

Science has marched forth from the shadows of philosophy and education has been liberated from the clutches of Church and State paving the way for what we call today 'secular education'. Both of those achievements are now under siege from the Hindutva camp.


References:


  1. Isaac Newton - James Gleick
  2. The Age of Reason -- Will and Ariel Durant
  3. The Age of Louis XIV -- Will and Ariel Durant
  4. Isaac Newton https://en.wikipedia.org/wiki/Isaac_Newton
  5. The Royal Society https://en.wikipedia.org/wiki/Royal_Society
  6. Francis Bacon https://en.wikipedia.org/wiki/Francis_Bacon
  7. New York Times Book Review of "Schrodinger: Life and Thought" by Walter Moore -- This addresses briefly the role of Vedanta in Schrodinger's life - http://www.nytimes.com/1990/01/07/books/the-lone-ranger-of-quantum-mechanics.html?pagewanted=all