Physicists From England

"I set out to learn. I went around Scripps... I knocked on people's doors and I said "Hello, I'm a physicist. ...I'm learning about the ocean. If you've got a book you would recommend..." and people recommended books to me... [O]ne of them was Jacques Cousteau's Silent World and a whole bunch of others... Once I knew I wanted to learn, I was in exactly the right place to begin that journey."

"I was on the Kilo Moana, out of Santa Barbara, on a preparatory cruise for a bigger one... [W]e were in... calm water off Santa Barbara and the Kilo Moana... has swath holes, so a very stable platform kind of a ship, more of a platform than a ship in some sense... [T]hat was the first time I'd ever... hung an instrument over the side... in order to try and measure something... [I]n the second cruise... I made a video of the cruise, like a... mini-documentary..."

"I come from in the north of England... a long way from the coast. ...I learned to scuba dive at Scripps. I learned to sail in . I hadn't done any of that before, so I was about as much a landlubber as you can get, but I was up for the adventure... That's the reason I'm doing what I'm doing... because it not only involves very interesting physics, but you are right in the middle of... experiencing it while it's happening..."

"I've always studied the physics in the middle, even when I was doing my degree. ...I passed my exams in quantum mechanics and cosmology, but I knew I was never going to touch those things, but with the ocean it's something you can directly experience... I'm much more interested in the everyday world than in... s or something."

"[W]e're past the point now where we say you have to go to sea to be an oceanographer, because it's not true, and it's actually very important that it isn't true."

"[P]eople can experience the ocean in lots of ways, and... that's the important point. It's the experience of the ocean in some sense, so... it's not just a computer game..."

"lies at the heart of quantum information theory, with applications to quantum computing, teleportation, cryptography and communication. In the apparently separate world of quantum gravity, the of radiating black holes has also occupied centre stage. Despite their apparent differences, it turns out that there is a correspondence between the two. ... Whenever two very different areas of theoretical physics are found to share the same mathematics, it frequently leads to new insights on both sides. Here we describe how knowledge of string theory and M-theory leads to new discoveries about Quantum Information Theory (QIT) and vice-versa (Duff 2007; Kallosh and Linde 2006; Levay 2006)."

"On compactification to six spacetime dimensions, the fundamental heterotic string admits as a a dual string whose effective worldsheet action couples to the background fields of the dual formulation of six-dimensional supergravity."

"Superunification underwent a major paradigm shift in 1984 when eleven-dimensional supergravity was knocked off its pedestal by ten-dimensional superstrings. This last year has witnessed a new shift of equal proportions: perturbative ten-dimensional superstrings have in their turn been superseded by a new non-perturbative theory called ', which describes supermembranes and superfivebranes, which subsumes all five consistent string theories and whose low energy limit is, ironically, eleven-dimensional supergravity."

"In 1973 two protégés (Derek Capper and the author) discovered that the conformal invariance under Weyl rescalings of the metric tensor gμν(x → Ω2(x) gμν(x) displayed by classical massless field systems in interaction with gravity no longer survives in the quantum theory. Since then these have found a variety of applications in black hole physics, cosmology, string theory and statistical mechanics."

"Theoretical physicists like to ask the big questions: How did the Universe begin? What are its fundamental constituents? What are the laws of nature that govern these constituents? The smallest constituents of matter are, by definition, the s. But what is an elementary particle, exactly? How do we know when we have reached the bottom line? Well, it turns out to be easier to say what an elementary particle is not."

"Churchill used to say that the Prof's brain was a beautiful piece of mechanism, and the Prof did not dissent from that judgement. He seemed to have a poor opinion of the intellect of everyone with the exception of Lord Birkenhead, Mr Churchill and Professor Lindemann; and he had a special contempt for the bureaucrat and all his ways. The Ministry of Supply and the Ordnance Board were two of his pet aversions, and he derived a great deal of pleasure from forestalling them with new inventions. In his appointment as Personal Assistant to the Prime Minister no field of activity was closed to him. He was as obstinate as a mule, and unwilling to admit that there was any problem under the sun which he was not qualified to solve. He would write a memorandum on high strategy one day, and a thesis on egg production on the next. He seemed to try to give the impression of wanting to quarrel with everybody, and of preferring everyone's room to their company; but once he had accepted a man as a friend, he never failed him, and there are many of his war-time colleagues who will ever remember him with deep personal affection. He hated Hitler and all his works, and his contribution to Hitler's downfall in all sorts of odd ways was considerable."

"He was one of the cleverest men I ever met, as clever as Rutherford."

"After Maynard Keynes I would be inclined to say that he was the cleverest man I have ever known in my life."

"Israeli ships have been barred from the Suez Canal, through which they had a right to free passage under the 1888 Convention, on the pretext that Egypt was at war with Israel. The Security Council passed various resolutions calling upon the Egyptians to desist from such action, but they took not the slightest notice. During all these years we heard none of the highfalutin talk which has nauseated so many of us during the last few months about the sanctity of the United Nations Charter and the importance of all countries rallying round to enforce it. Egypt continued to defy the Security Council without any action being taken. After all, it was only Jews who were being hurt. But when, finally, the Israelis, finding that the Egyptians were openly proclaiming their intentions of liquidating them, decided last autumn to make a move to defend themselves before it was too late, and reoccupied the Gaza Strip and moved into the Sinai peninsula, there was a most terrific outcry. They were labelled as aggressors, and the whole paraphernalia of the United Nations was mobilised against them."

"Perhaps the greatest outrage in the Middle East is the way the Israelis have been treated in comparison with the Egyptians. That this has been allowed to pass with so little protest must, it seems to me, be due to the anti-Semitism, conscious or unconscious, which, unhappily, exists in so many circles. I personally hold no particular brief for the Jews. There are good and bad Jews, just as there are good and bad Englishmen, or even good and bad Scots; and, for all I know, the percentage of bad may be greater in one case than in the other. But whatever the facts, I consider indiscriminate anti-Semitism altogether deplorable. There is not even a difference of colour to explain this violent prejudice which crops up so often in such unexpected places. Whatever the reason, nobody can deny that bias has been shown in the way the Israeli-Egyptian conflict has been handled by the United Nations."

"The Egyptian claim that they were in a state of war with Israel was forgotten. The Israelis were vilified in the Press, and every conceivable form of pressure was brought to bear to force them to retire, not merely beyond their real legal frontier but right out of the Gaza Strip, to which the Egyptians had no claim whatsoever, except that they had occupied it in the war they unleashed against Israel in 1948 and which, according to their story, still persists. Only Egyptians, apparently, are allowed to break the conditions of the truce. Israelis must fulfil them to the last iota. I can understand a strong anti-Semite taking this line, but it is amazing to find so many honourable people adopting it without any explanation."

"Before he came to Oxford Lindemann's most important contribution had on the whole been theoretical rather than experimental. He had one of the most brilliant theoretical minds I have ever known, and he continued throughout his life here to take a deep interest in the fundamentals of science. His views on all matters of theory were always worth hearing."

"[W]e are told that no nation can stand out against world opinion; that we can rely upon the moral forces of the Assembly's resolution. Surely this is more wishful thinking. What is more, it is flatly contradicted by experience. For several years now U.N.O. has condemned Egypt for refusing to allow the passage of Israel's ships through the Suez Canal in direct conflict with its obligations under the 1888 Treaty. Has the moral force of this condemnation had any effect on the Egyptians? None whatever. By a huge majority U.N.O. has called upon Russia to withdraw its troops from Hungary. Has the moral force of this resolution had any effect? Ask the Hungarians. If the Russians do not comply, we are told, they will be branded by the Assembly. The trouble is, that they have been branded already, and they do not seem to mind."

"We depend, unhappily, to a great extent upon imports of oil... We cannot allow our people to go cold and hungry just because some people who claim to speak for world opinion have suddenly arbitrarily introduced some novel concept of national sovereignty which apparently permits the Government of any country, at its own sweet will, to repudiate its obligations and refuse to honour its promises. In the old days the victim of such maltreatment would have insisted upon its rights, if necessarily by armed force. But this, we are told, is quite out of fashion—it would be "gunboat diplomacy." We must not use force: we must negotiate. You might as well say that, if someone snatches your watch in the street, you must not resist, still less take it back. You must negotiate with him. I suppose that, if you are lucky, you may recover the chain. If I believed that the Socialist leaders...could not grasp this simple train of reasoning, I should despair of the future of this country. Of course it is no doubt tempting to snatch a Party advantage by making sanctimonious speeches, and generally by taking what purports to be the high moral line in these matters; but it really shocked me that, when it was suggested in another place that the Government spokesman had in mind the protection of our oil supplies, he was greeted with boos and jeers. The Government actually, it seems, were trying to safeguard the vital interests of their country. What a terrible accusation!"

"I hate living in a fool's paradise, and though, like everyone else, I wish U.N.O. could work, I have come reluctantly to the view that in its present form it cannot. It is composed, of course, of men full of the best intentions, and its admirers are equally well-meaning. But I cannot help feeling that people tend to overestimate its power for good and to underrate its potentialities for evil. We know all too well nowadays how easy it is for people to fall victims to phrases, to be hypnotised by slogans, and I am afraid that that is what is happening in the case of U.N.O. "Send it to U.N.O." is becoming a sort of incantation. In many quarters it seems to be treated as a shibboleth. You have only to mouth the words and go through the ceremonial, and all will be well."

"The Assembly is split into a number of blocs. There are the Afro-Asian bloc, the South American bloc and the Iron Curtain bloc, the members of which tend to vote together on their likes and dislikes, in accordance with instructions from their home Government. No one pretends they are influenced by the evidence or the speeches. Practically always the repercussions it will have on the government's own position and interests decides which way a delegate votes: often votes are cast according to some bargain or arrangement; sometimes it is said they are to all intents and purposes peddled about. Judicial impartiality is the last thing that seems to matter. To describe a majority vote of such a body as "a decision of the highest tribunal in the world" is simply laughable. To pillory as criminal any nation which hesitates to comply with its decisions is monstrous."

"What I have said will, I fear, arouse indignation in some quarters. That is always the way when comfortable emotional beliefs which cannot be sustained by evidence on logical grounds are challenged. The magic syllables "U.N.O." have acquired the status of an invocation, almost of a prayer. To cast doubt on the Organisation is considered akin to blasphemy. The rôle of the iconoclast is always hateful, but facts and logic cannot simply be brushed aside. I therefore think it my duty, as one not linked in any way with the Government and still less with the Opposition, to refuse to foster what I believe to be a dangerous delusion which is rapidly becoming a snare."

"When tackled by R. H. Dundas at the High Table at Christ Church as to how good a scientist Lindemann was, Einstein replied that he had always regarded him as the last of the great Florentines, a man who embraced all science as his province, a great man in the Renaissance tradition."

"It was typical of Lindemann's mind to bring together ideas in this way from different branches of physics in an order-of-magnitude calculation. His mind was extraordinarily lively, and he also had an unusually wide knowledge of physics, including astronomy, and what is now called geophysics. He had a gift for picking out the essentials in a piece of physics, even if sometimes he went too far in ignoring the aspects of secondary importance. He was a most stimulating conversationalist on matters of physics, and one went away from a session with him feeling that he had rearranged all one's mental furniture and added one or two rather bizarre objects to the room."

"He displayed admirable tact and could be a most fascinating companion. That he could be and often was intolerably grumpy, spoilt, unjust, etc., cannot possibly be denied—too many who only met him once or twice saw nothing else. But if all was well he could be entrancingly funny, understanding and kind. He was admirably loyal to his staff, defending them after their blunders, finding them jobs when his Branch was wound up far beyond the mere line of duty. He used, in his off-moments, to drive us all dizzy with irritation, but I do not think that any of us failed to perceive that he had a real scale and greatness in the depth, clarity, speed and severe simplicity of his thought. Certainly in my own experience he can be compared only with Keynes. Perhaps there was an interval between them, but there was a larger one between this pair and the rest of the world."

"Rightly or wrongly, Israel is now a fact, which can be obliterated only by exterminating the Jews."

"But even if this monstrous interpretation of the word "law" were taken, how is it to be enforced? As everybody knows, law is useless unless it is backed by a police force. It is no use magistrates finding a man guilty if they cannot compel him to make restitution or send him to prison if he refuses. Thus even if we accepted this weird U.N.O. body, with its odd form of voting, as the ultimate tribunal, it would be no good whatever unless it had some way of enforcing its decisions. We are told that in that case all we have to do is to endow U.N.O. with a police force... I think, on analysis, that this also is a case of wishful thinking."

"We are told that the intention is to substitute law for war; that that is, in essence, the whole object of the United Nations. It is another of those comfortable slogans expressing a desire felt by all of us in rhyming monosyllables, which seem to have an almost hypnotic effect. Of course, we all want the rule of law amongst nations; but what are the laws which we wish to rule? Evidently, it is not the laws accepted in principle for thousands of years—the fulfilment of contracts and the sanctity of treaties. Rather it seems to be commandments promulgated ad hoc by the Assembly whenever differences arise. That is submission to an arbitrary body. It is not law."

"Why is it that we have nothing to compare with these great technological universities in this country? The main reason, I fear, is because we suffer from a most lamentable type of intellectual snobbery which causes the majority of our so-called educated people to look down on science and technology as some form of menial intellectual activity, on which civilised, cultured people need not embark and indeed are better without. I am not sure that traces of it have not survived even to this day in this House. I well remember—admittedly it was a good many years ago—mentioning to a Member of your Lordships' House a relative of his, the great Lord Rayleigh, certainly one of the six greatest physicists in the world. His comment was: "Oh, yes, he is a little odd, isn't he?—interested in chemistry and that sort of thing." That was what he said of one of the greatest physicists this country has known. It is to that attitude of mind, which has by no means died out, that many of our troubles are due."

"Nobody, I imagine, will deny that the whole future of our country depends upon our being able to increase productivity in manufacture, transportation and, generally, industry in all its various branches... If our output per man-year were to be increased by only 10 per cent. most of our economic difficulties would vanish into thin air. There are only two ways of achieving this: either our people must work harder or longer hours, or we must invent new and more efficient methods of carrying out technical processes. Our prosperity, our living standards, our very survival are governed by the one brute fact that unless we can persuade foreign countries to take our exports, they will cease to send us the food on which we live and the raw materials from which our exports are made. And these exports will have to run in increasing measure the gauntlet of competition by the hard-working, highly-competent, industrialised American, Continental and Japanese manufacturers, offering their goods on favourable terms, with every refinement of selling technique, to our former customers."

"Never has the world situation been more ominous. Japan, in the hands of a military Junta, is overruning China... Germany is rearming at a rate unparalleled in the history of the world. Preaching a gospel of force, determined to subjugate Central Europe to her theories... England in its longing for peace is the richest prey for the conqueror, disarmed and defenceless, having tried the Socialist panacea of a bold, generous gesture and pared its defences to the bone, no longer able to control events. Here she lies, the richest prize at the mercy of a conqueror since Rome lay open to Alarich."

"In learning how to manipulate nuclear energy man has taken the greatest step in the control of the forces of nature since his half-human ancestors learnt how to make and maintain fire. Just as fires can be, and in the early days often were, utterly destructive of life in the forests and on the prairies, so this new power may be utterly destructive of all that has been built up in a thousand generations. Man's moral stature has not grown with his intellectual stature, or rather perhaps it would be fairer to say man's institutions have not advanced as fast as his power to harness the forces of nature to his will. For I am convinced that if a vote could be taken the world over as to whether there was any object in the world for which it was worth while to start an aggressive war, not one man in a hundred would say "Yes." Unfortunately, as we have recently seen, modern developments make it so easy for a few vicious leaders to mislead, control and dominate great nations that the natural, decent human instincts of mankind are no adequate safeguard."

"[O]ur whole future depends upon our productivity: that is, the amount of useful and valuable output which can be turned out with a given amount of labour and raw materials. To improve this is far and away the most important problem confronting this country—apart, of course, from the need to preserve peace. Unless we succeed in doing it, in a generation our standard of living will sink to that of the people of Portugal and will harm not only Great Britain but the sterling area as a whole."

"It is, I think, undeniable that we have fallen behind the United States and many continental countries in industrial technique because they have produced first rate technologists in far greater numbers than we have here. Unless we can catch up with them, or, better still, overtake them, the future of our industry, especially in the export markets, is bleak."

"Man is indeed a strange mass of contradictions. Here we are, microscopic creatures scuttling about on the surface of a minor planet circling round a second-rate star in one of half-a-million galaxies. In some ways our minds are so capacious and penetrating. We can judge the weight and composition of stars whose light started before man appeared on this earth. We can unveil the secrets of the nuclei which are so small that if we could put together as many of them as there are drops of water in the ocean they would together scarcely form a particle visible with a microscope. Yet we seem to be unable to order our own affairs so as to avoid exterminating one another. Perhaps the threat of this new weapon may in the end bring home to the various nations the overriding need of finding means, at no matter what cost and sacrifice, of reaching agreement without resort to force. We must pray that this will be achieved in time, for if it is not then the end of civilized life on this planet is at hand."

"I’m convinced that science is as deep a human instinctive activity as art or storytelling or music."

"I actually wanted to be an astronaut more than an astronomer for a quite a long time. Then I learned this would require I somehow become a US citizen (at the time Brits could not be ESA Astronauts because of the UK’s refusal to fund the human spaceflight part of ESA – although this has recently changed), and I also discovered how much detail I would be required to know about the space shuttle and just how fit I would have to be. I’m not really a detail oriented person, and I’m not that keen on the gym, so I gently switched my goal to becoming an astronomer! This also has the advantage of letting me keep my feet on the ground!"

"I have also rendered the phonic molecular vibrations visible, when produced by the longitudinal oscillations of a column of air ..."

"The instruments and processes I am about to describe being all founded on the principles established by Ohm in his theory of the voltaic circuit, and this beautiful and comprehensive theory being not yet generally understood and admitted, even by many persons engaged in original research, I could scarcely hope to make my descriptions and explanations understood without prefacing them with a short account of the principal results which have been deduced from it. It will soon be perceived how the clear ideas of electro-motive forces and resistances, substituted for the vague notions of intensity and quantity which have been so long prevalent, enable us to give satisfactory explanations of most important phenomena, the laws of which have hitherto been involved in obscurity and doubt."

"... Wheatstone was to become a household name for his work on electric telegraphs, and indeed the Prince Consort consulted him as a parent of the telegraph system. Wheatstone had other claims to fame. He held a Chair at King's College London for 41 years and, although he hardly ever gave a lecture, the College subsequently named a laboratory after him. He invented the concertina and he discovered the principle of stereoscopy. He used his encyclopaedic knowledge of the literature to spread scientific ideas. He designed ingenious electro-mechanical devices and pioneered precise electrical measurements."

"Any scientist, myself or another, can become so enamoured of his brain child that he resents criticism."

"... in terms of modern solid state physics, what does “transparent” mean? It means that, in the energy spectrum of the electrons in the material, there is a gap of forbidden energies between the occupied states (the valence band) and the empty states (the conduction band); light quanta corresponding to a visible wave-length do not have the energy needed to make electrons jump across it. This gap is quite a sophisticated concept, entirely dependent on quantum mechanics, and introduced for solids in the 1930’s by the pioneering work of Bloch, Peierls and A. H. Wilson. The theory was based on the assumption that the material was crystalline. ... my coworkers and I ... asked the question "how can glass be transparent?"."

"The hypothesis that the electron has a magnetic moment was, as is well known, first introduced to account for the duplexity phenomena of atomic spectra. More recently, however, Dirac has succeeded in accounting for these same phenomena by the introduction of a modified wave equation, which conforms both to the principle of relativity and to the general transformation theory. Formally, at least, on the new theory also, the electron has a magnetic moment of εh/mc, but when the electron is in an atom we cannot observe this magnetic moment directly; we can only observe the moment of the whole atom, or, of course, the splitting of the spectral lines, which we may say is “caused” by this moment."

"In many materials the electrical behavior changes from metallic to nonmetallic when the pressure, temperature or magnetic field is varied or (as in alloys) when the composition is varied, and the theoretical description of these processes is quite complicated. The interest of the problem lies perhaps mainly in our imperfect understanding of the nature of a metal. In the days before quantum mechanics, when I first attended undergraduate lectures on the electron theory of solids, it was taught that in metals one or more atoms from each electron were free, whereas in nonmetals they were somehow fixed to the atoms or ions or to the chemical bonds. The long mean free paths of electrons in metals extending over hundreds or thousands of atomic spacings were not understood, and neither was the absence of any large contribution from the electrons to the specific heat."

"Solar geoengineering, I’m afraid I think it’s a fool’s paradise, and I’ve been saying the same thing for many years."

"I think it’s going to be very, very, very difficult to get to 1.5C."

"I think it is possible to get the carbon dioxide emissions down and to get the temperature increase slowed down. It just requires everybody to work together to do it."

"Without concerted and swift international action to reduce emissions of greenhouse gases, the 1.5°C threshold is likely to be passed by 2040 and the report () sets out very starkly the costs of inaction."

"The climate system takes decades to respond to changes in carbon emissions so decisions made now will affect future generations - for better or worse."