physicists-from-ireland

"A very large number of optical phenomena have been examined by various experimenters with a view to detecting an influence on them of the Earth's velocity of translation. The only such influence that has been announced is that found by Fizeau on the displacement of the plane of polarization of light, produced by transmission through a pile of glass plates: according to Fizeau's own view the experiment was uncertain owing to the numerous disturbing causes that had to be guarded against; and this doubt as to the feasibility of the observations has been fully shared by Maxwell and most authorities who have considered the matter."

"The direct knowledge of matter that mankind can acquire is a knowledge of the average behaviour and relations of the crowd of molecules."

"The researches by which Sir Joseph Larmor will chiefly be remembered belong to the decade 1892–1901, which is now recognized as a transition period in physics. ... Before the end of the decade X-rays, electrons and radio-activity had again set experimental physics in feverish progress, to be followed later by revolutionary changes in the foundations of physical theory. But at the time when Larmor started on his main work there was little to inspire new ideas. ... Classical physics was indeed near the end of its tether. Of those who yet contrived to make substantial progress at this difficult stage—who brought classical physics finally to the point where new methods became inevitable—two names stand out prominently, Lorentz and Larmor. Their work had much in common, so that it is sometimes difficult to assess their contributions separately. Larmor’s reputation has perhaps been overshadowed by that of Lorentz. But on any estimate, Larmor’s achievements rank high; and his place in science is secure as one who re-kindled the dying embers of the old physics to prepare the advent of the new."

"From remote ages the great question with which, since Newton's time, we have been familiar under the somewhat misleading antithesis of contact versus distance, has engaged speculation,—how is that portions of matter can interact on each other which seem to have no means of connexion between them. Can a body act where it is not?"

"The physical properties of fluid media, as regards change of state, and as regards capillary phenomena, have been closely illustrated in theory by consideration of a model medium, subject to internal expansive pressure, of kinetic or other origin, which is counteracted by the contractive effect of mutual attraction between its molecules—the latter force extending through much the greater, though for ordinary purposes still insensible, range. For liquids, the difference between these two much larger quantities, of different types, constitutes the transmitted hydrostatic pressure."

"The evidence is closing in more and more rigorously that the medium which transmits electrical and radiant effects must either completely accompany matter in bulk in its movements or else be entirely independent of such movements."

"If Universities do not study useless subjects, who will?"

"When two surfaces at different temperatures are in presence of one another with a gas between them, there exists a force tending to separate them. The assumption of this force explains a very great number of phenomena, including the motion of the arms of Mr. Crooke's radiometers and the so-called spheroidal state of liquids."

"Despite overwhelming evidence of anthropogenic influence, there is a tendency for those with pronounced free-market views to reject the reality of global warming. The reason underpinning this is transparent – if one accepts human-mediated climate change, then supporting mitigating action should follow. But the demon of regulation is a bridge too far for many libertarians. Given that climate change affects everyone whether they consent to it or not, then unregulated use of natural resources infringes the property rights of others and is ideologically equivalent to trespass, so the tenuous property rights house of cards comes crashing down.When faced with this ideological dilemma, free-market advocates often resolve the cognitive dissonance by simply rejecting the reality of climate change, rather than acknowledging that their axiom is fundamentally flawed."

"Hamilton was apt to work by fits and starts. He has been known several times to work fourteen hours in one day, standing nearly all the while; but there were intervals of comparative inaction... Sometimes a letter was written and copied which was not sent for months, and then only the first sheet, with promise of the rest. It has even happened that the letter was knowingly never forwarded at all, and that when, long after, he found reason to wish to send it, he could not find it and sent the copy instead."

"It may not sound very consistent with any such professed humility on my part, if I say to you that, after having served for the Quaternions during fourteen years, and having (as America seems to think) won my Rachel—to be my own by an intellectual marriage—I now wish to wind up several scientific projects, from which those quaternions had for a long time diverted me; and feel as if I were entering, or had already entered, on a new harvest of labour and reputation. As to Fame, if it have not been won or earned already, it is not likely that any future exertion will make it mine. But as to the Labour; that is a thing within everybody's power to judge of, even for himself. I have very long admired Ptolemy's description of his great astronomical Master, Hipparchus... "a labour-loving and truth-loving man."—Be such my epitaph!"

"The Study of Algebra may be pursued in three very different schools, the Practical, the Philological, or the Theoretical, according as Algebra itself is accounted an Instrument, or a Language, or a Contemplation; according as ease of operation, or symmetry of expression, or clearness of thought, (the agere, the fari, or the sapere,) is eminently prized and sought for."

"The minimum principle that unified the knowledge of light, gravitation, and electricity of Hamilton's time no longer suffices to relate these fundamental branches of physics. Within fifty years of its creation, the belief that Hamilton's principle would outlive all other physical laws of physics was shattered. Minimum principles have since been created for separate branches of physics... but these are not only restricted... but seem to be contrived... A single minimum principle, a universal law governing all processes in nature, is still the direction in which the search for simplicity is headed, with the price of simplicity now raised from a mastery of differential equations to a mastery of the calculus of variations."

"Hamilton was not only an Irishman, but Irish: and this with curious oppositions of character. He was a non-combatant: there was too much kindness in his disposition to allow any fight to show itself. Impulsive and enthusiastic, with strong opinions and new views, he was never engaged in a scientific controversy... William Rowan Hamilton's preservative was his dread of wounding the feelings of others. In his youth, "Defender of the Absent" was his nickname. ...He had a morbid fear of being a plagiarist; and the letters which he wrote to those who had treated like subjects with himself sometimes contained curious and far-fetched misgivings about his own priority. But, with all this, there was a touch of the national temperament in him... an Irishman who never gets into a row may give quick but quiet symptoms of opposition of opinion, and of what, were it more than a rudiment, would be called pugnacity."

"The difficulties which so many have felt in the doctrine of Negative and Imaginary Quantities in Algebra forced themselves long ago on my attention... And while agreeing with those who had contended that negatives and imaginaries were not properly quantities at all, I still felt dissatisfied with any view which should not give to them, from the outset, a clear interpretation and meaning... It early appeared to me that these ends might be attained by our consenting to regard Algebra as being no mere Art, nor Language, nor primarily a Science of Quantity; but rather as the Science of Order in Progression. It was, however, a part of this conception, that the progression here spoken of was understood to be continuous and unidimensional: extending indefinitely forward and backward, but not in any lateral direction. And although the successive states of such a progression might (no doubt) be represented by points upon a line, yet I thought that their simple successiveness was better conceived by comparing them with moments of time, divested, however, of all reference to cause and effect; so that the "time" here considered might be said to be abstract, ideal, or pure, like that "space" which is the object of geometry. In this manner I was led, many years ago, to regard Algebra as the Science of Pure Time: and an Essay, containing my views respecting it as such, was published in 1835. ...[I]f the letters A and B were employed as dates, to denote any two moments of time, which might or might not be distinct, the case of the coincidence or identity of these two moments, or of equivalence of these two dates, was denoted by the equation,B = Awhich symbolic assertion was thus interpreted as not involving any original reference to quantity, nor as expressing the result of any comparison between two durations as measured. It corresponded to the conception of simultaneity or synchronism; or, in simpler words, it represented the thought of the present in time. Of all possible answers to the general question, "When," the simplest is the answer, "Now:" and it was the attitude of mind, assumed in the making of this answer, which (in the system here described) might be said to be originally symbolized by the equation above written."

"Time is said to have only one dimension, and space to have three dimensions. ... The mathematical quaternion partakes of both these elements; in technical language it may be said to be 'time plus space', or 'space plus time': and in this sense it has, or at least involves a reference to, four dimensions. And how the One of Time, of Space the Three, Might in the Chain of Symbols girdled be."

"He used to carry on, long trains of algebraic and arithmetical calculations in his mind, during which he was unconscious of the earthly necessity of eating; we used to bring in a 'snack' and leave it in his study, but a brief nod of recognition of the intrusion of the chop or cutlet was often the only result, and his thoughts went on soaring upwards."

"To the scientists of 1850, Hamilton's principle was the realization of a dream. ...from the time of Galileo scientists had been striving to deduce as many phenomena of nature as possible from a few fundamental physical principles. ...they made striking progress ...But even before these successes were achieved Descartes had already expressed the hope and expectation that all the laws of science would be derivable from a single basic law of the universe. This hope became a driving force in the late eighteenth century after Maupertuis's and Euler's work showed that optics and mechanics could very likely be unified under one principle. Hamilton's achievement in encompassing the most developed and largest branches of physical science, mechanics, optics, electricity, and magnetism under one principle was therefore regarded as the pinnacle of mathematical physics."

"To admire is, to me, questionless, the highest pleasure of life."

"… an undercurrent of thought was going on in my mind which gave at last a result, whereof it is not too much to say that I felt at once the importance. An electric circuit seemed to close; and a spark flashed forth the herald (as I foresaw immediately) of many long years to come of definitely directed thought and work by myself, if spared, and, at all events, on the part of others if I should even be allowed to live long enough distinctly to communicate the discovery. Nor could I resist the impulse - unphilosophical as it may have been - to cut with a knife on a stone of Brougham Bridge, as we passed it, the fundamental formula which contains the Solution of the Problem, but of course, as an inscription, has long since mouldered away."

"The properties of bodies were investigated by several distinguished French mathematicians on the hypothesis that they are systems of molecules in equilibrium. The somewhat unsatisfactory nature of the results... produced... a reaction in favour of the opposite method of treating bodies as if they were... continuous. This method, in the hands of Green, Stokes, and others, has led to results the value of which does not at all depend on what theory we adopt as to the ultimate constitution of bodies."

"Hamilton was a man who combined different talents to an extent which is often attributed, by exaggeration, to the possessor of one powerful faculty: but in his case there is abundant evidence. He was scholar, poet, metaphysician, mathematician, and natural philosopher. Highly imaginative and fluent of tongue, he was an orator in all that he knew; even in mathematics, to the details of which he could give almost a rhetorical cast in a letter. In metaphysics he was very well read, and could talk in a way which suggested a comparison to Southey, and a difference. Hamilton one day preached to Southey on this subject until the latter remarked, as they passed a ploughman, "If you had been Coleridge, you would have talked to that ploughman just as you have been talking to me.""

"It still remained to be seen whether the laws of motion, as dependent on moving forces, could also be consistently transferred to spherical or pseudospherical space. This investigation has been carried out by Professor Lipschitz of Bonn. It is found that the comprehensive expression for all the laws of dynamics, , may be directly transferred to spaces of which the measure of curvature is other than zero. Accordingly, in this respect also, the disparate systems of geometry lead to no contradiction."

"It is very difficult for us, placed as we have been from earliest childhood in a condition of training, to say what would have been our feelings had such training never taken place."

"John Desmond Bernal (1901-1971) was undoubtedly the most important of the "Western" scientists who, during the twentieth century, accepted the Marxist view of social development. He did more than "accept" it: he tried to sketch the whole history of science from a Marxist viewpoint; he wrote a number of articles explicitly expounding his view of the relation of Marxism to science; and from his student days he played an active role in Communist politics. He has been criticised: during his lifetime, for too readily accepting official Soviet policy, whether relating to society or to science; since his death, for having been too ready to hope that his vision of the use of science for human ends could be implemented by capitalist societies; and at all times, for an allegedly simplistic faith in science as the salvation of mankind."

"[T]he centre of interest... lies in natural science and technology because... the sciences of society were first embodied in tradition and ritual and only took shape under the influence and on the model of the natural sciences."

"Never had Frederick Engels' famous notion of 'scientific socialism' been treated so literally."

"The extent of his faith in science can best be described as religious devotion. He comments himself: 'The same type of mind that would now make a physicist would in the Middle Ages have made a scholastic theologian.'"

"Science, in one aspect, is ordered technique; in another, it is rationalized mythology. Because it started as a hardly distinguishable aspect of the mystery of the craftsman and the lore of the priest... science was long in establishing any independent existence in society. Even when it did find its own... adepts in medicine, astrology, and alchemy, these formed, for many ages a small group parasitic on wealthy princes, clerics, and merchants. It is only in the last three centuries that science has become traditionally established as a profession in its own right, with its specific education, literature, and fellowship."

"The progress in science has been anything but uniform in time and place. ...In the course of time the centres of scientific activity have been continually displaced, usually following rather than leading the migration of the centres of commercial and industrial activity. Babylonia, Egypt, and India have all been the foci of ancient science. Greece became their common heir, and there the rational basis... was first worked out. There was little place for science in Rome and none in the barbarian kingdoms of western Europe. The heritage of Greece returned to the East from whence it had come. In Syria, Persia, and India, even in... China, new breaths... came... in a brilliant synthesis under the banner of Islam. There they underwent a development which... was to give rise to... modern science."

"[T]radition links us with the revolutionary science of the Renaissance... we can distinguish... four major periods of advance. [1] [C]entred in Italy... the renewal of mechanics, anatomy, and astronomy with Leonardo, Vesalius, and Copernicus, destroying the authority of the Ancients in their central doctrines of man and the world. [2] [S]preading to the Low Countries, France, and Britain, beginning with Bacon, Galileo, and Descartes, and ending in Newton, hammered out a new mathematical mechanical model of the world. [3] [C]entred in industrial Britain and revolutionary Paris, opened... areas of experience... as... electricity... It was then that science could help... with power, machinery, and chemicals, to transform production and transport. [4] [T]he scientific revolution of our own time. ...[T]he beginning of a world science, transforming old and creating new industries, permeating every aspect of human life. ...[N]ow... we find science directly involved in the violent and terrible drama of wars and social revolution."

"He idealized science not just as knowledge but in a political sense too, believing that the management of human affairs could also be more scientific by virtue of being socialist. He was thus particularly inclined to accept the claims of Soviet Marxism to represent science in general, and to accord it the same degree of respect."

"The theme which constantly recurs is the complex interaction between techniques, science, and philosophy. Science stands as a middle term between the established and transmitted practice of men who work for a living, and the pattern of ideas and traditions which assure the continuity of society and the rights and privileges of the classes that make it up."

"I remember excitedly buying a boxed set of 4 books, Science in History by John D. Bernal (Pelican, 1965), when I was an undergraduate. At the time I was an amateur Marxist and Bernal’s work was an encyclopaedic analysis of science and society from a Marxist point of view. I was delighted to learn that Bernal was an Irishman who had spent a brilliant career at the leading edge of UK science, making many notable contributions."

"For Bernal the humanistic and the scientific dimensions were one. His vision of the sort of future that science could make possible for mankind was in total contrast to that of Aldous Huxley's Brave New World. Full automation, nuclear energy, and cybernetics could bring a fuller realisation of human potential. His futuristic sketches grew increasingly better grounded as his Marxism matured, making the society of the future set out in The Social Function of Science far more plausible than the one set out in his earlier work, The World, the Flesh and the Devil. His sense of history was sweeping, stretching back into the ancient past and shooting forward into the coming future."

"[S]cience has so changed its nature over... human history that no definition could be made to fit."

"The central industry of modern civilisation, tending, because of its control over materials, to spread into and ultimately incorporate older industries such as mining, smelting, oil- refining, textiles, rubber, building, and even agriculture in respect to fertilizers and food processing."

"Life is a partial, continuous, progressive, multiform and conditionally interactive self-realization of the potentialities of atomic electron states."

"But if capitalism had built up science as a productive force, the very character of the new mode of production was serving to make capitalism itself unnecessary."

"In the decade after the war Freud’s theories dominated the narrow circles of British intellectuals. His psycho-analysis was accepted warmly for many reasons. It was new and exciting, it was shocking, it debunked religion and morals, it promised an internal liberation from all restraints. Nevertheless, it was essentially a creed of escape into an inner world of complexes and repressions and away from social and economic realities."

"One of the questions on which clarity of thinking is now most necessary is that of the relation between the methods of science and of Marxist philosophy. Although much has already been written on the subject, yet there is still an enormous amount of confusion and contradictory statement."

"If Engels had not been the constant companion in arms of Marx in the revolutionary struggles of the 19th century, there is no doubt that he would be remembered chiefly as one of the foremost scientist-philosophers of the century. It was an ironical tribute paid to the correctness of his views as to the relations between politics and ideology that he suffered complete neglect from the scientists of the Victorian age. But time now has taken its revenge, and Engels’ contemporary views on 19th century science seem to us now in the 20th far more fresh and filled with understanding than those of the professional philosophers of science of his day, who for the most part are completely forgotten, while the few that linger on, such as Lange and Herbert Spencer, are only quoted as examples of the limitations of their times."

"[T]o seek to discover how the advance of science had altered the whole frame of human thought, it would... be necessary to go back through the great controversies of the Renaissance about the Nature of the heavens, and... to the Ancients, without whose theories the controversies would have no meaning. There was nothing... but to attempt to trace the whole story from the... origins of human society. This involved a parallel study of all social and economic history in relation to the history of science... [T]here seemed some excuse for making a first attempt to sketch out the field, if only to stimulate, through... omissions and errors, others more leisured and qualified... No attempt is made here to present a chronologically uniform picture."

"Science is one of the most absorbing and satisfying pastimes, and as such it appeals in different ways to different types of personality. To some it 1s a game against the unknown where one wins and no one loses, to others, more humanly minded, it is a race between different investigators as to who should first wrest the prize from nature. It has all the qualities which make millions of people addicts of the crossword puzzle or the detective story, the only difference being that the problem has been set by nature or chance and not by man, that the answers cannot be got with certainty, and when they are found often raise far more questions than the original problem."

"World Encyclopaedia. -- Behind these lies another prospect of greater and more permanent importance; that of an attempt at a comprehensive and continually revised presentation of the whole of science in its social context, an idea most persuasively put forward by H. G. Wells in his appeal for a World Encyclopaedia of which he has already given us a foretaste in his celebrated outlines. The encyclopaedic movement was a great rallying point of the liberal revolution of the eighteenth and nineteenth centuries. The real encyclopaedia should not be what the Encyclopaedia Britannica has degenerated into, a mere mass of unrelated knowledge sold by high-pressure salesmanship, but a coherent expression of the living and changing body of thought; it should sum up what is for the moment the spirit of the age... The original French Encyclopaedia which did attempt these things was, however, made in the period of relative quiet when the forces of liberation were gathering ready to break their bonds. We have already entered the second period of revolutionary struggle and the quiet thought necessary to make such an effort will not be easy to find, but some effort is worth making because the combined assault on science and humanity by the forces of barbarism has against it, as yet, no general and coherent statement on the part of those who believe in democracy and the need for the people of the world to take over the active control of production and administration for their own safety and welfare."

"No one, who knows what the difficulties are, now believes that the crisis of physics is likely to be resolved by any simple trick or modification of existing theories. Something radical is needed, and it will have to go far wider than physics. A new world outlook is being forged, but much experiment and argument will be needed before it can take a definitive form. It must be coherent, it must include and illuminate the new knowledge of fundamental particles and their complex fields, it must resolve the paradoxes of wave and particle, it must make the world inside the atom and the wide spaces of the universe equally intelligible. It must have a different dimension from all previous world views, and include in itself an explanation of development and the origin of new things. In this it will fall naturally in line with the converging tendencies of the biological and social sciences in which a regular pattern blends with their evolutionary history."

"In science men have learned consciously to subordinate themselves to a common purpose without losing the individuality of their achievements. Each one knows that his work depends on that of his predecessors and colleagues, and that it can only reach its fruition through the work of his successors. In science men collaborate not because they are forced to by superior authority or because they blindly follow some chosen leader, but because they realize that only in this willing collaboration can each man find his goal."

"[The goal of efficiency was] a system in which all relevant information would be available to each research worker in an amplitude proportional to its degree of relevance."

"Hogben's Science for the Citizen would be an admirable text-book for such teaching."

"The problem of the re-organization of science will not be solved by administrative or financial changes. It will also be necessary to reorganise in a most comprehensive way the whole apparatus of scientific communication."