Main Logo

Showing posts with label Maxwell. Show all posts
Showing posts with label Maxwell. Show all posts

Thursday, 26 March 2020

පිරිතේ වැදගත්කම

    සිංහල ලිත් ඉලක්කම් 


පිරිතේ වැදගත්කම



මේ වෛර කිරීමට නොව මෛත්‍රී කිරීමට කාලයයි. අද ලෝකයේ කොවිඩ් 19 වැඩි පුර ම පැතිරෙන්නෙ ආයුධ බලයෙන් ඇතැම් විට ජනයා සමූලඝාතනය කර තම ආධිපත්‍යය පැතිර වූ රටවලයි. අප ඔවුන්ට වෛර කළ යුතු නැහැ. අපි ඒ පාලකයන්ටත් මෛත්‍රී කරමු. දැන් පැරණි වාමාංශිකයන්වත් භංගවේවා කියනු මා අසා නැහැ. ජ වි පෙ හා පෙරටුගාමීන් නම් තාමත් වෛරී ප්‍රකාශ තම රැස්වීම්වල උද්ඝෝෂණවල කරනවා. මේ ඔවුන්ටත් මෛත්‍රී කිරීමට කාලයයි. 

Thursday, 3 May 2018

ස්වභාව ධර්මය හා නීති


ස්වභාව ධර්මය හා නීති



සමහර වෙලාවට අහන්න ලැබෙනවා ස්වභාව ධර්මයෙහි නීති නියම ආදිය ගැන. ස්වභාව ධර්මය කියා දෙයක් තියෙනවා කියලා උපකල්පනය කරලා ඒ ස්වභාව ධර්මය ක්‍රියාකරන හැටි, එහි සම්බන්ධකම් ආදිය කියැවෙන නීති තියෙන බවත් ඒවා සොයා ගැනීම බටහිර විද්‍යාවෙන් කෙරෙන බවත් ඇතැමුන් කියනවා. මේ බටහිර ස්වාභාවික විද්‍යා ගැන පමණක් නොව සමාජයීය විද්‍යාවන් ගැනත් කියැවෙන්නක්. මිනිස් ඉතිහාසයේ විකාශය ගැන මාක්ස් හොයලා කිව්වා. ඒවා හරි ගිහින් නැති බව වෙන ම කතාවක්. ආර්ථිකය හැසිරෙන විධිය ගැන මාක්ස්වාදී නොවන ආර්ථික විද්‍යාඥයොත් කියනවා. ඒත් ආර්ථිකය වැඩ කරන්නෙ මේ නීතිවලට අනුව නො වෙයි.

Monday, 16 January 2012

On so called scientific knowledge – XI

A paradigm in the sense of Kuhn and not in the sense of Sri Lankan academia and NGO establishment is a base in which theories are constructed. It should be mentioned that according to the western sociologists of knowledge, knowledge is constructed and not discovered and moreover it is done in a social context. It is clear that Einstein, if born in Continental Europe in the eighteenth century would not have come up with the theory of relativity nor would he have constructed his theory if he was born in England in the last quarter of the nineteenth century. He would have been out of space and time or space - time to construct his theory in either case. Incidentally Kalaya, Deshaya and Dveepaya are among the pasmaha belum or five great observations that the Bodhisatva was interested in before he was born as Prince Siddhartha Gauthama. If he was born as an Eskimo he would not have attained Buddhathva. When Einstein was born in general the whole of Western Europe was deeply immersed in the notions of absolute space and absolute time which may be called part of Newtonian paradigm and most of the theories from Astronomy to Zoology had been constructed in that paradigm. Einstein essentially changed the paradigm and introduced the space – time paradigm which was given a Mathematical formulation by Minkowski. Another paradigm shift which is even more revolutionary than Einsteinian paradigm shift has been the Quantum paradigm shift. Though many people would not have realized it then the Thermodynamics paradigm shift had been another paradigm shift in the history of western science. What we have essentially done is to claim that knowledge is constructed in a Chinthanaya, which could have several paradigms, and is created relative to the sense organs, the mind and the culture of the creator. The creator could be a western scientist, a Sinhala Buddhist or any sathva (living being).

It is clear that Kuhn does not recognize even construction of ordinary theories or “discoveries” as revolutionary science. Not all Nobel Prize winners have been paradigm shifters but sometimes would have revolutionized western science. For example Perlmutter and Reiss who shared the Nobel Prize for Physics in 2011 for “discovering” the acceleration of the universe were only working within the Einsteinian paradigm, though they have revolutionized western cosmology that had believed that the universe expanded with a deceleration. Since 1998, the western cosmologists believe that the universe expands with an acceleration following Perlmutter and Reiss having recognized the work of the latter with a Nobel Prize. If the theoretical work carried out by my students at the University of Kelaniya is correct the universe has to enter into a decelerating phase again if it has not already done so, but I doubt very much that their work will be recognized even by the Physicists in Sri Lanka, even if they are proved to be correct, due to academic politics, which appears to be the worst type of politics. In any event Kuhn thought of paradigm shifts when he talked of revolutions in western science. Following Kuhn we may categorize western science under four headings. They are (i) the paradigm shifting science, (ii) new theories and discoveries within existing paradigms (iii) very ordinary science involved with problem solving usually in the periphery using established theories and finally (iv) the undergraduate and school children science which is very often involved with verification of already known results.

Is there a so called method adopted by paradigm shifters? Unfortunately for the philosophers of western science there is no such method. What is the so called scientific method that Einstein used? Apparently he did not know the results of the Michelson Morley experiment which was finally explained by his special theory of relativity. He was thinking of a different problem in electrodynamics. The dynamo can be looked at as resulting from either the movement of a static magnet surrounded by a revolving circuit or the movement of a magnet in a static circuit. Though the results are the same the Maxwell’s equation of electromagnetism had to be used in two different ways to obtain the results. Einstein who was interested in symmetries did not like this two tongue approach so to say, shifted the paradigm from space and time to space - time and also showed that Maxwell’s equations took the same form (or invariant) with respect to observers moving relative to one another under his relativistic transformations which are also known as Lorentz Transformations. Incidentally Maxwell’s Equations were not invariant in the Newtonian paradigm and hence needed two methods in that paradigm to explain the dynamo problem. Einstein was interested in a fundamental problem that could not be solved in the then existing paradigms. There was no method that he could follow and it was left to his remarkable insight to come out with a solution. It is the insight and intuition that is involved with creation or construction whether in western science, art, music, mathematics or any other field western or eastern. It appears that creation of paradigms or even theories within a paradigm in what may be called shastra is rare than creations in shilpa. What is the method of creating a work of art? There is no method as such and what helps one to create in Art or Music is one’s intuition and insight, which of course is relative to one’s culture. It is said that there is an underline relationship between the works of Dostoevsky, Einstein and Picasso as far as abstractness is concerned. They represented a European abstract chinthanaya and were more or less contemporaries.

The category (ii) mentioned above is more creative than category (iii) with which almost all so called research done is involved with. There is both a method and intuition involved with (ii), which I might add are not “rational”, and those who are adherents of methods without an insight or intuition are bound to end up in category (iii). However, this so called method is not at all creative and it is only a set of rules not different from what is found in cookery. It is all about selection of samples, testing and analysing and is similar to selecting 10 eggs, 500 grams of flour etc. making a mixture heating to a certain temperature, maintaining at that temperature for so many minutes and of course writing a report if necessary. One has an intuition and an insight in one’s culture and the main reason that non western scientists cannot do category (ii) western science is that western science works in a culture that is different from the cultures of non western scientists. As far as the western scientists in the non western cultures are concerned category (i) western science is a non starter. In category (iii) western science very often scientists in their research proposals have to write down testing of what is known as a hypothesis. There are no hypotheses that western scientists in Sri Lanka are testing and very often the hypothesis amounts to something such as oxygen is present in air. One can write a so called research paper irrespective of whether oxygen is found in air or not provided the scientist manages to survive through and after testing.

It has to be mentioned that Kuhn did not emphasize on a method, and neither did he deny the existence of a so called scientific method. It was left to Feyerabend to finally demolish this myth of a scientific method, and he did so beautifully in his “Against Method”. He wrote a number of papers and books after the publication of Against Method, including “Farewell to Reason”. The western scientists are not different from other mortals in other fields such as Art and Music and also from other people involved with different shastras in other parts of the world. Western science is creation by a few without adhering to a so called method but depending on insight and intuition in Judaic Christian culture, and very ordinary problem solving by the vast majority who have neither intuition nor insight using a method not very much different from that is practised in cookery. Incidentally it should be noted that tuition kills intuition. (To be continued)


Copyright Prof. Nalin De Silva

Friday, 30 September 2011

On so called scientific knowledge IV

The apples and coconuts fall to the earth because of gravitation according to Newton. During Newton’s time the concept of force was associated with pulling and pushing. One could pull or push an object by using a force, which is applied through a rope or a pole or some such object, if not hands or other parts of the body are used directly. In other words a force, not a refined concept then, could be applied on an object only with another object that touched the first. However, unfortunately for Newton he could not show to the others the rope or the object that pulled the coconut or the apple to the earth. When some of his contemporaries wanted to see the rope Newton could only say it was action at a distance. Einstein had not formulated his special theory of relativity then and there was no upper limit on the speed with which “communication” between objects took place. Thus Newton was of the view that it was action at a distance instantly. The earth instantly exerted a force, the gravitational force, on the coconut that made the latter to come down once it was released.

The so called gravitational field was a later introduction following Maxwell who introduced the concept of field in connection with what is now known as electromagnetism. With the introduction of the gravitational field it was possible to describe how an object exerted the gravitational force on a distant second object without directly touching it. However it did not answer the questions that were later asked by Earnest Mach the Austrian Physicist cum Philosopher. Neither the gravitational force nor the gravitational field were not sensory perceptible and the question was whether gravitation existed as a “phenomenon”. In other words it became a problem in Ontology or theory of existence. Though Ontology and Epistemology are considered to belong to different branches in western Philosophy for Buddhists it is not so. It is knowledge of existence that we deal with and it is not possible to draw a line between epistemology and ontology.

How does one prove that “things” exist? One could say that sensory perceptible objects do exist while “objects” that are not sensory perceptible do not exist. Existence is used here in the conventional sense whatever it means. If one defines existence that way then not only Natha Deviyo but also the almighty God of Abrahamic religions does not exist. However, one could say an “object” that is sensory perceptible to at least a few human beings does exist, and if we believe the statements of some people that they have seen various gods then we could say that gods exist. However, others may say that the people who claim to have “seen” gods (gods experienced not necessarily with eyes) are affected by hallucination and they perceive “things” that do not exist. However this begs the question as we have already assumed that what these people perceive do not exist. The question is how we do know that those “objects” “phenomena” experienced by them do not exist? Let us leave the gods and come down to earth with or without gravitation to decide whether gravitation exists. Obviously not even Newton had felt gravitation at that time, and people such as the experimental Chemist whom was referred to in the previous instalment began to feel gravitation only after generations of students had been taught that coconuts are attracted to earth by the gravitational force.

Why did educated people before Einstein formulated his General Theory of Relativity and many such people even after, assume that gravitation existed? In other words how did they know that gravitation existed? It was not because they felt gravitation but simply because gravitation was able to explain why coconuts and apples fell to the ground. Now falling of coconuts was sensory perceptible unlike devivaru to almost all people and gravitation though sensory not perceptible explained a sensory perceptible phenomenon. It may be assumed that until a better definition is formulated, as far as non sensory perceptible “objects”, “phenomena” are concerned one way to show that they exist in the conventional sense is to show that some sensory perceptible phenomena are explained in terms of the relevant non sensory perceptible “objects” and “phenomena” in a consistent manner. Then of course the existence of non sensory perceptible “phenomena” “objects” is assumed if the animals are sensitive to those objects. However one could object to the latter by saying that even there the human beings explain the behaviour of animals on the assumption that such and such non sensory perceptible “objects” “phenomena” exist for the animals to behave in that particular manner. In other words there exist sensory perceptible objects and non sensory perceptible objects in the conventional sense, the sensory perceptible objects being those that could be “felt” with the five sense organs (in this section mind is deliberately omitted from been considered as the sixth sense organ though the Buddhists may object to it, as the western scientists and others of their ilk would not entertain a world grasped only with the mind) and of course with the mind (without mind nothing can be grasped), while the non sensory perceptible objects are those the humans assume to exist in order to explain sensory perceptible “objects” and “phenomena”.

We find dogs reacting in very strange ways when we do not feel anything extra ordinary. The dogs are used to “sense” the trail of a criminal and this “phenomenon” is explained by claiming that they (dogs not the criminals) are sensitive to smells that the humans usually cannot sense. There is no direct experience for the human beings of the smells or the sounds that the dogs are sensitive to, and we believe that those sounds and smells exist because that explains the behaviour of the dogs under certain circumstances. With the help of existing western Physics one could say that the dogs are sensitive to certain sound frequencies to which the humans are not sensitive. It is said that the some birds and fish are sensitive to magnetism or magnetic fields though the humans have no sense organ that would enable them to “feel” magnetism. Even though the human cannot feel magnetism through their sense organs they assume that magnetism and objects with magnetic properties exist that attract metals. People would have probably observed that certain objects had the ability to attract objects such as metals and if we go by the western thinking one person long long ago would have explained this phenomenon of attraction using the concept of magnetism. In Sinhala magnets are called “kantham” derived from kantha most probably of Sanskrit origin, meaning to attract as in the case of suriyakantha, the flower attracted to sun, and of course “kantha pakshaya” or women to whom men are attracted. No “scientist” in the ancient or modern world has explained this attraction using a non perceptible concept representing something that exists in women but the poets, not sparing Bhikkus such as Ven. Thotagamuwe Rahula Thera, have been busy from time immemorial describing the attractive features of the ladies. In a sense it is good that no “scientist” has been able to come out with a dry non sensory perceptible concept to describe this attractive feature for we would have lost all those beautiful poems on women by Rahula Hamuduruwan Vahansela and Sarachchandras not to mention the Bharath and other poets. How many poets other than a few postmodernist pundits who want to show off that they are third rate imitators, have written poems on magnets? Incidentally I use Bharath not to mean present India or an ancient India that did not exist before the British came to our part of the world. In my vocabulary Dambadiva means that land mass north of Sri Lanka or Helaya or Lanka, that existed before the Aryans migrated and Bharath means an area not necessarily coinciding with Dambadiva, after the Vedic culture was established by the Aryans mixing different cultures until the British conquered and founded India. (To be continued)

Copyright Prof. Nalin De Silva