1913

Nobel Prize in Physics

A Doorway Four Degrees Above Zero

Heike Kamerlingh Onnes

Heike Kamerlingh Onnes had spent decades building the coldest laboratory on earth at Leiden, assembling a liquefaction cascade — oxygen first, then hydrogen, then helium — with the patience and precision of a man who understood that low temperatures were not a curiosity but a doorway. In 1908 he became the first person to liquefy helium, coaxing it to 4 Kelvin, just four degrees above absolute zero; three years later, measuring the electrical resistance of mercury at those temperatures, he found it did not just fall — it vanished entirely. He called this superconductivity, which is one of the tidier examples of a scientist naming something after what it does. The Nobel citation in 1913 was formally awarded for the helium liquefaction rather than the superconductivity, a distinction the committee perhaps drew because they did not yet know what to do with the latter. We have since found things to do with it: MRI scanners, particle accelerators, maglev trains, and a growing zoo of quantum devices all depend on materials held near absolute zero. Without his insistence on precision cryogenics, modern medicine would be missing its most useful imaging tool.

Nobel Prize in Chemistry

Molecules Arranged Like Vertices

Alfred Werner

For most of the nineteenth century, chemists assumed that molecules were essentially linear affairs — atoms bonded to neighbours in chains, like a row of holding hands. Alfred Werner, a Swiss chemist with a gift for spatial reasoning and apparently no patience for conventional assumptions, proposed in 1893 that metal atoms could bond to surrounding groups in three-dimensional arrangements, with those groups positioned at the vertices of an octahedron or other geometric solid around the central metal. His colleagues were unconvinced; the structures were invisible to any instrument then available, and he had deduced them entirely from the symmetry properties of the compounds' optical behaviour and the number of isomers they produced. It took twenty years of careful synthesis before the structures could be confirmed to general satisfaction, at which point Werner received his prize and the field called coordination chemistry quietly became indispensable. Today it underpins everything from the haemoglobin that carries oxygen in blood, to the catalysts that crack petroleum, to the platinum-based drugs used in chemotherapy — geometry, it turns out, is the secret life of inorganic matter.

Nobel Prize in Physiology or Medicine

Without Protection, the Second Time

Charles Richet

Charles Richet stumbled onto anaphylaxis in 1902 while studying the toxins of the Portuguese man-of-war aboard Prince Albert I of Monaco's research vessel, which is the sort of career circumstance that makes academic life seem adventurous. He was trying to establish a safe dose of the toxin in dogs; instead he found that dogs given a second dose weeks after the first — a dose that should have been harmless — died within minutes in a spectacular collapse of circulation and respiration. The phenomenon was the opposite of vaccination, where prior exposure grants protection; Richet named it anaphylaxis from the Greek for 'without protection.' He received his Nobel Prize in 1913, a full decade after the discovery, by which time the mechanism remained mysterious but the clinical danger had become terrifyingly familiar to allergists and immunologists. We now know it as an IgE-mediated mast-cell degranulation — the immune system, having catalogued a threat, responds to its reappearance with a force entirely disproportionate to any plausible danger. The epinephrine auto-injector that saves lives in school lunchrooms every year is Richet's awkward legacy.

Nobel Prize in Literature

A Translation Yeats Could Not Put Down

Rabindranath Tagore

Rabindranath Tagore was born in Calcutta in 1861 into a family that took literature, music, and philosophy as seriously as other families take breakfast — which is to say, as an organising principle of daily life. He had been writing poetry, plays, and songs in Bengali for decades before William Butler Yeats encountered an English prose translation Tagore had made of his own devotional poems, the collection that would become Gitanjali, and found himself unable to stop reading it on the London Underground. Yeats wrote the introduction to the English edition and pronounced himself humbled, which was not a posture he adopted often. The Swedish Academy awarded Tagore the 1913 Literature prize — the first given to a non-European — describing his work as 'profoundly sensitive, fresh and beautiful poetry.' He remains the only person to have written the national anthems of two countries: India and Bangladesh. The Gitanjali poems resist summary and resist the prose-translation rather better than they should, which may be why Tagore himself returned to rework them more than once — they give the impression of being inexhaustible.

Nobel Peace Prize

Eleven Months Before the War He Fought

Henri La Fontaine

Henri La Fontaine was a Belgian senator, international lawyer, and president of the International Peace Bureau who spent decades building the institutional architecture of arbitration: agreements, tribunals, inter-parliamentary unions, and the elaborate procedural machinery by which nations might, in principle, choose argument over artillery. He was also a meticulous bibliographer — his Institut International de Bibliographie, co-founded with Paul Otlet, was an early and earnest attempt to catalogue all human knowledge, which gives him a kind of double melancholy in retrospect. He collected his Nobel Peace Prize in October 1913. The following June, Archduke Franz Ferdinand was shot in Sarajevo; by August, the six-week war that everyone expected had begun its four-year career. La Fontaine continued his peace work through and after the conflict, undiscouraged in the way that only a certain kind of idealist manages to remain undiscouraged. The institutions he helped build survived, even if they could not prevent what came next — and perhaps that is the right verdict on his legacy.

Bohr model of the hydrogen atom

The Atom That Wasn't Supposed to Hold

In 1913 Niels Bohr was a young Danish physicist recently arrived in Ernest Rutherford's Manchester laboratory, where he inherited a problem that should have been straightforwardly embarrassing: Rutherford's nuclear atom, in which electrons orbited a dense positive nucleus, was classically unstable. An orbiting charge radiates energy and should spiral inward and crash within a fraction of a second. Atoms, however, had been stubbornly refusing to do this for billions of years, which suggested that classical mechanics was missing something. Bohr's solution was to declare, by fiat, that electrons could only occupy certain allowed orbits, and that when they jumped between orbits they emitted or absorbed a discrete packet of light whose energy matched the difference. The model was a brilliant improvisation — it grafted Planck's quantum onto classical orbital mechanics without worrying too much about whether they were compatible — and it predicted the spectral lines of hydrogen with an accuracy that left physicists no comfortable middle ground between admiration and bewilderment. It was also, strictly speaking, wrong in ways that quantum mechanics would later clarify; but as a provisional scaffold for a discipline that did not yet know what it was building, it was the most productive wrong theory in the history of physics.

Moseley establishes atomic number

Counting Elements by Their X-Ray Voice

The periodic table as Mendeleev arranged it was ordered by atomic weight, which mostly worked but produced a handful of irritating anomalies — tellurium and iodine, for instance, had to be swapped from their weight-order position to fit their chemical behaviour, and nobody could say with confidence whether any undiscovered elements were still lurking between the known ones. Henry Moseley, a twenty-five-year-old physicist in Rutherford's Manchester group, resolved the ambiguity in 1913 by firing X-rays at element after element and measuring the frequency of the emitted secondary radiation. He found that the square root of the characteristic X-ray frequency increased in precise integer steps from one element to the next — steps that mapped exactly onto what we now call the atomic number, the count of protons in the nucleus. Atomic number, not atomic weight, was the true organising principle; the periodic table's arrangement was suddenly explained rather than merely observed. Moseley also demonstrated that four elements between hydrogen and gold were still missing, predicting their properties before they had been found. He was killed at Gallipoli in 1915 at the age of twenty-seven, in circumstances that prompted the British government to thereafter decline to send promising scientists into infantry combat — a policy adopted somewhat late.

Millikan oil-drop experiment determines electron charge

A Droplet Held Still by Argument

Robert Millikan at the University of Chicago had a deceptively simple apparatus: a chamber between two charged plates, into which he sprayed a fine mist of oil from a perfume atomiser. The droplets acquired electric charge from the friction of the spray, and Millikan adjusted the electric field until a given droplet hung motionless, gravitational pull precisely cancelled by electrostatic force. From the balance of those forces — and from the droplet's size, which he calculated by watching it fall when the field was switched off — he could extract the charge it carried. After hundreds of such measurements, spread over years, a pattern emerged: the charges were always whole-number multiples of a single smallest value, 1.592 × 10⁻¹⁹ coulombs, within about one percent of the now-accepted value. This was the charge of a single electron, the fundamental quantum of electricity, and Millikan had pinned it down with the patience of a man who understood that the universe would not hurry itself on his behalf. The value feeds directly into every other fundamental constant in physics; it is, in a quiet way, one of the numbers the whole of modern science is written in.

Treponema pallidum confirmed as cause of syphilis

A Corkscrew Culprit, Finally Convicted

Syphilis had devastated Europe since at least the late fifteenth century, cycling through its three stages — the initial chancre, the spreading rash and systemic illness, then the long latent phase that could erupt decades later as neurological destruction — and resisting every proposed explanation with the vigour of a disease that preferred to remain mysterious. Fritz Schaudinn and Erich Hoffmann had identified the corkscrew-shaped bacterium Treponema pallidum in infected tissue in 1905, but identification and causation are different things, and the years that followed were spent confirming through careful experimental work — animal models, transmission experiments, the grinding machinery of Koch's postulates — that this organism and no other was responsible. By 1913 that confirmation was definitive. The significance was immediate and practical: Paul Ehrlich had introduced salvarsan in 1910, the first purpose-designed chemotherapeutic agent, an arsenic compound that killed the spirochete selectively, and its rational use depended on knowing exactly what it was killing. The chain from Schaudinn's microscope to Ehrlich's compound to modern antibiotics is one of the cleaner examples of basic science enabling targeted treatment — cause identified, mechanism exploited, disease eventually defeatable.

Cepheid variables observed in the Andromeda nebula

A Smudge That Might Be a Universe

By 1913, astronomers had accumulated evidence that Andromeda — the fuzzy smudge visible to the naked eye that catalogues listed as a nebula — contained variable stars whose brightness rose and fell on regular periods. Henrietta Swan Leavitt had established just two years earlier that Cepheid variables followed a precise period-luminosity relationship: measure how long a Cepheid takes to pulse and you know how bright it truly is; compare that to how bright it appears and you have its distance. The question of whether Andromeda's variables lay inside the Milky Way or far beyond it was, in effect, the question of whether the Milky Way was the entire universe or merely one specimen among many — and in 1913 that question was fiercely contested among astronomers with genuinely inadequate data. The answer waited until 1924, when Edwin Hubble measured the distance to Andromeda's Cepheids and arrived at a figure that placed the nebula hundreds of thousands of light-years away, definitively outside any plausible boundary of our own galaxy. The Milky Way became, overnight, a rather ordinary island in an ocean whose extent nobody yet knew how to measure.