1963

Nobel Prize in Physics

The Nucleus Has Shells Too

Eugene Wigner · Maria Goeppert Mayer · J. Hans D. Jensen

The atomic nucleus, for the first few decades after its discovery, was treated rather like a bag of slightly hostile marbles — a mess of protons and neutrons held together by forces that nobody had properly characterised. Eugene Wigner changed that picture by showing how symmetry principles, the kind of abstract group-theoretic mathematics that physicists had long regarded as a pastime for pure mathematicians, turned out to be uncannily accurate at predicting what real nuclear particles actually do. Meanwhile, Maria Goeppert Mayer in Chicago and J. Hans D. Jensen in Heidelberg independently proposed, in the late 1940s, that nucleons arrange themselves in discrete energy shells inside the nucleus — exactly as electrons do around it, only with a crucial spin-orbit coupling term that Mayer worked out while reportedly washing dishes. Colleagues were sceptical until the model explained why certain nuclei with particular 'magic numbers' of protons or neutrons were dramatically more stable than their neighbours; the model then proceeded to explain so many other things that scepticism became untenable. Mayer became only the second woman to receive the Nobel Prize in Physics. The shell model now underpins everything from nuclear power engineering to the search for superheavy elements at the edge of the periodic table.

Nobel Prize in Chemistry

Plastic Learns to Behave at Room Temperature

Karl Ziegler · Giulio Natta

Before Ziegler's discovery, making polyethylene required pressures of around 1,500 atmospheres and temperatures that demanded expensive, specialised industrial equipment — conditions that kept plastic a luxury material rather than the ambient background of modern life. In 1953, Karl Ziegler found that certain titanium-aluminium catalyst combinations could link ethylene monomers into long polymer chains at room temperature and ordinary pressure, and that this inconvenient fact had nothing to do with the pressure at all. Giulio Natta, a meticulous Italian chemist who was partly responsible for Ziegler trying the titanium compounds in the first place, then extended the catalysts to polypropylene and made a further discovery that was arguably more significant: these catalysts could be tuned to control the precise spatial arrangement — the 'tacticity' — of atoms along the polymer chain, producing materials with properties that could be dialled up or down by design. A catalyst that acts as an editor of molecular geometry is a rather unusual thing to have found accidentally. The polypropylene and polyethylene that result from Ziegler-Natta catalysis are now among the highest-volume manufactured chemicals in the world; the plastic casing of the device you are reading this on is, in a roundabout sense, their legacy.

Nobel Prize in Physiology or Medicine

A Squid's Nerve Writes Its Own Equations

Sir John Eccles · Alan Hodgkin · Andrew Huxley

For most of the history of neuroscience, a nerve impulse was a thing that existed and propagated, but which nobody could describe in mathematical terms precise enough to make testable predictions. Alan Hodgkin and Andrew Huxley changed that in a series of experiments on the giant axon of the squid — a nerve fibre thick enough to insert electrodes into directly — where they painstakingly measured how sodium and potassium ions flow across the membrane during an action potential and then, in 1952, wrote down differential equations that reproduce the whole phenomenon quantitatively. Those equations, derived from voltage-clamp measurements on a cephalopod, still appear unchanged in modern neuroscience textbooks — a rather good return on one's squid. John Eccles contributed the equally important finding that transmission at synapses, the junctions between nerve cells, is chemical rather than electrical, and that the same chemical mechanisms that excite one neuron can inhibit another depending on the receptor. Together, the three laureates gave neuroscience its working vocabulary: the action potential, the synapse, excitation and inhibition. Without that framework, there is no rational basis for anaesthesia, no way to understand epilepsy, and no starting point for the drugs that modulate mood, pain, and attention.

Nobel Prize in Literature

Exile Made the Homeland Legible

Giorgos Seferis

Giorgos Seferis spent the better part of his adult life as a Greek diplomat — serving in Albania, South Africa, the Middle East, and London — which gave him an exile's peculiar relationship with the country that obsessed him, a Greece he could observe more clearly precisely because he was rarely in it. His poetry draws the Homeric landscape not as nostalgia but as weight: the ruins of Mycenae and the ghosts of Odyssey press on modern Greeks as something inherited and inescapable rather than merely celebrated. He wrote in the demotic language of ordinary speech at a time when a learned, archaic Greek was still the prestige register, which was its own quiet act of positioning. When the Swedish Academy awarded him the Nobel Prize in 1963, it was the first time the prize had gone to a Greek writer; the citation praised a lyrical poetry that, "inspired by a deep feeling for the Hellenic world of culture," depicted "the conditions of modern man." He was reportedly gracious about it, which is consistent with the poems. His later statement against the Greek military junta, delivered in 1969, cost him something; the poems had prepared him for the cost.

Nobel Peace Prize

A Century of Tending the Wounded

International Committee of the Red Cross · League of Red Cross Societies

The Red Cross movement was born from a specific and gruesome afternoon: the Battle of Solferino in June 1859, where a Swiss businessman named Henry Dunant stumbled upon 40,000 dead and wounded soldiers and organised local villagers to help care for the casualties regardless of which side they had fought on. His account, A Memory of Solferino, led directly to the Geneva Convention of 1864 and the founding of the International Committee of the Red Cross. In 1963, the hundredth anniversary of that founding, the Nobel Committee awarded the Peace Prize jointly to the ICRC and to the League of Red Cross Societies — the ICRC for the third time, a record unlikely to be matched. The centenary timing was explicit rather than incidental: the committee was making the point that principles of this kind are not self-sustaining, that they require institutional tending decade by decade as reliably as the wounded on a battlefield require bandaging. The Geneva Conventions, extended and updated most recently in 1949 after the particular horrors of the Second World War, represent the closest thing the international community has to agreed rules for catastrophe. They work unevenly and imperfectly; the alternative is worse.

Quasars confirmed as a new cosmological class of objects

A Trillion Suns, Mistaken for One Star

Radio astronomers in the late 1950s had catalogued a number of objects — in the Third Cambridge Catalogue, among others — that emitted intense radio waves but appeared, through optical telescopes, as unremarkable point sources indistinguishable from ordinary stars. The designation 'quasi-stellar radio source' was a polite admission of bewilderment. In 1963, Maarten Schmidt at Caltech obtained a spectrum of one such object, 3C 273, and spent some time staring at the emission lines in a state of confusion before realising they were perfectly familiar lines of hydrogen — just shifted so far toward the red end of the spectrum that he hadn't recognised them. The redshift was 0.158, implying a recession velocity and distance that placed 3C 273 at cosmological scales, over two billion light-years away. At that distance, its brightness implied an energy output equal to roughly a trillion suns packed into a volume smaller than the solar system. The physics required to explain this was not yet in hand; it took decades to establish that quasars are the extremely luminous cores of distant galaxies powered by supermassive black holes actively consuming surrounding material. They are, in effect, the universe's most violent beacons — and because their light has been travelling for billions of years, studying them is one of the better ways we have of reading the early history of the cosmos.

Roy Kerr derives rotating black hole solution

Spacetime Around a Spin, Solved in Weeks

Einstein's general theory of relativity, published in 1915, produced almost immediately an exact solution for the spacetime geometry around a non-rotating, perfectly spherical mass — the Schwarzschild metric, derived in 1916 by Karl Schwarzschild while serving on the Eastern Front. It is a beautiful result, and it describes almost nothing in the actual universe, because essentially all astrophysical objects rotate. Finding an exact solution for a rotating mass turned out to be extraordinarily hard: every attempt over the following four and a half decades either introduced approximations or led to intractable mathematics. Roy Kerr, a New Zealand mathematician working at the University of Texas, found the exact solution in 1963, in a few weeks of calculation. When he presented it at a conference in Dallas that year, the audience — including a number of distinguished relativists — reportedly began drifting out during the talk, which is the kind of detail that polishes itself into legend. The Kerr metric, as it is now universally called, describes not just the spacetime geometry but predicts the existence of an ergosphere, a region outside the event horizon from which energy can in principle be extracted from the black hole's rotation. Every black hole studied by astronomers today — including those detected by gravitational waves and the ones photographed by the Event Horizon Telescope — is described by Kerr's solution.

Vine and Matthews publish evidence of seafloor spreading

Stripes in the Rock, Recording a Moving Floor

The theory that continents move had been proposed by Alfred Wegener in 1912 and had spent the intervening decades in a peculiar limbo: the fit of the coastlines was undeniable, the fossil and geological correlations were suggestive, but nobody could identify a mechanism capable of dragging an entire continent across the ocean floor, and respectable geophysicists largely declined to take the idea seriously. The mechanism turned out to be operating just below the ocean itself. Fred Vine, a graduate student at Cambridge, and his supervisor Drummond Matthews published a paper in Nature in September 1963 noting that the ocean floor on either side of the Mid-Atlantic Ridge showed symmetric stripes of rock magnetised in alternating directions — a pattern that made sense only if new oceanic crust was continuously welling up at the ridge and spreading outward, each fresh batch of solidifying basalt recording whichever direction Earth's magnetic field happened to be pointing at the time. The paper was the smoking gun that plate tectonics had been waiting for: here was direct, measurable, symmetric evidence that the seafloor was a conveyor belt, and that the continents were simply passengers. A Canadian geologist named Lawrence Morley had submitted the same idea independently months earlier and been rejected by two journals; the hypothesis is sometimes called the Vine-Matthews-Morley hypothesis by those who prefer their history honest.

Edward Lorenz publishes foundational paper on chaotic systems

A Rounded Decimal Breaks the Forecast

In 1961, Edward Lorenz, a meteorologist at MIT, was re-running a weather simulation and, to save time, entered the initial conditions from a printout rather than restarting from the beginning — rounding 0.506127 to 0.506. The simulation that followed diverged so completely from the original that he initially suspected a hardware fault. It was not a hardware fault. Lorenz realised he had stumbled onto a property of certain nonlinear systems: that even an arbitrarily tiny difference in starting conditions could, over time, produce wildly different outcomes — what he would later illustrate with the image of a butterfly in Brazil triggering a tornado in Texas, a metaphor he was careful to frame as a question rather than an assertion. His 1963 paper, 'Deterministic Nonperiodic Flow,' described a simplified three-variable model of atmospheric convection in which the trajectories of solutions traced a strange, non-repeating, bounded pattern in state space — the attractor that now carries his name. The paper established that unpredictability is not always a sign of ignorance or inadequate data; it can be a structural property of the system itself. This was not, as is sometimes claimed, the end of determinism — Lorenz's equations are perfectly deterministic — but it was a serious qualification of what determinism promises about prediction. The implications ran outward through fluid dynamics, ecology, economics, and any other field that had hoped more data would eventually yield more certainty.

Valentina Tereshkova — first woman in space

Forty-Eight Circuits, Alone Above Earth

Valentina Tereshkova had been a textile worker in Yaroslavl with a passion for parachute jumping — a hobby that turned out to be precisely the right credential for the Soviet space programme, which required its Vostok cosmonauts to eject from the capsule and parachute down separately. She was selected from more than 400 candidates, completed her cosmonaut training, and on 16 June 1963 launched aboard Vostok 6, spending 2 days, 22 hours, and 50 minutes in orbit and completing 48 circuits of the Earth. That duration exceeded the combined spaceflight time of every American astronaut who had flown to that point, a comparison the Soviet state media did not neglect to make. She was 26. Technically Vostok 6 flew a concurrent mission with Vostok 5, piloted by Valery Bykovsky, and the two spacecraft made close passes — though 'close' in orbital terms meant still separated by several kilometres, which is close enough by any sensible measure. No woman would fly in space again until Svetlana Savitskaya in 1982; no American woman until Sally Ride in 1983. Tereshkova remains the only woman to have completed a solo spaceflight.

Arecibo Observatory opens in Puerto Rico

A Sinkhole Learns to Listen to the Sky

The idea behind Arecibo was straightforward in conception and deeply impractical in almost every other respect: suspend a 305-metre spherical reflector dish inside a natural limestone sinkhole in the karst hills of Puerto Rico, hang a feed antenna from cables strung between three concrete towers above it, and point it at the sky by moving the feed rather than the dish. When it was dedicated on 1 November 1963, it was the largest radio telescope on Earth by a considerable margin, and it would remain so for more than five decades. In that time it measured the rotation period of Mercury (turning out to be 59 days, not 88 as previously thought), discovered the first binary pulsar — an observation that led to an indirect confirmation of gravitational waves and a Nobel Prize — and detected the first extrasolar planets around a pulsar in 1992. In 1974 it transmitted the Arecibo Message, a 1,679-bit binary signal aimed at the globular cluster M13, on the sensible grounds that if anyone was listening from 25,000 light-years away they might appreciate a greeting. The telescope collapsed in December 2020 when two support cables failed; Puerto Rican scientists and astronomers mourned it with a specificity that made clear it had been rather more than an antenna.