1908

Nobel Prize in Physics

Gabriel Lippmann

Lippmann's colour photography used the interference of light waves — the same phenomenon that makes soap bubbles iridescent — to record colour directly onto a photographic plate without dyes or filters. The results were beautiful and permanent; the process was slow, complex, and impossible to reproduce in print. It was replaced by dye-based methods within a generation, but it was the most physically correct colour photograph ever made.

Nobel Prize in Chemistry

Ernest Rutherford

Rutherford, trained as a physicist, received the Chemistry prize for showing that radioactive elements transmute — that one element spontaneously becomes another by emitting radiation. It was, chemically speaking, a startling result, since the ancient alchemical dream of transmutation had been dismissed as fantasy for two centuries. Rutherford reportedly joked that he seemed to have undergone his own transformation: from physicist to chemist.

Nobel Prize in Physiology or Medicine

Ilya Mechnikov · Paul Ehrlich

Mechnikov had watched white blood cells engulf bacteria under the microscope in 1882 — he called the process phagocytosis, and argued that these cells were the front line of immune defence. Ehrlich was developing the idea that antibodies were shaped to fit specific molecules like a lock to a key, and was working toward drugs designed on the same principle. Their shared prize recognised two different theories of immunity that were both, it turned out, right.

Nobel Prize in Literature

Rudolf Eucken

Eucken was a German philosopher who argued for a spiritual activism — the idea that higher meaning had to be actively won against a merely material view of the world. His books sold extraordinarily well in his lifetime. He is little read now, which the Nobel committee could not have foreseen and cannot be blamed for.

Nobel Peace Prize

Klas Pontus Arnoldson · Fredrik Bajer

Arnoldson, a Swedish journalist and politician, had founded the Swedish Peace and Arbitration Society and worked for Scandinavian neutrality. Bajer, a Danish writer and member of parliament, had been the first president of the International Peace Bureau in Bern. They had each spent careers building the architecture of organised pacifism that the coming decade would test to destruction.

Heike Kamerlingh Onnes liquefies helium

Heike Kamerlingh Onnes

On 10 July, in his laboratory in Leiden, Kamerlingh Onnes cooled helium to 4.2 kelvin — about 269 degrees below zero Celsius — and watched it turn liquid. No one had ever been that cold before. The temperatures he achieved opened an entirely new territory of physics: four years later, in the same laboratory, he would discover that some metals lose all electrical resistance at these extremes, a phenomenon he named superconductivity.

Hermann Minkowski introduces four-dimensional spacetime

Hermann Minkowski

Einstein's 1905 relativity paper had described time and space separately, with equations connecting them. Minkowski, Einstein's former mathematics professor at Zürich, gave a lecture in 1908 arguing that the right way to see it was as a single four-dimensional entity — spacetime — in which different observers simply take different cross-sections. "Henceforth," he declared, "space by itself and time by itself are doomed to fade away into mere shadows." Einstein initially found this formalisation unnecessary; he later called it indispensable.

Hardy–Weinberg principle established

G.H. Hardy · Wilhelm Weinberg

Hardy, one of England's greatest mathematicians, wrote to a genetics journal after a colleague suggested that dominant traits must inevitably become more common in a population over time. Hardy pointed out, concisely, that this was wrong: in a large, randomly mating population free from selection, mutation, and drift, allele frequencies stay constant indefinitely. Weinberg derived the same result independently in German. The principle now bears both their names, and Hardy considered his contribution so trivial that he barely mentioned it in his autobiography.

Henrietta Swan Leavitt's initial Cepheid period–luminosity findings

Henrietta Swan Leavitt

Working at the Harvard College Observatory, Leavitt was employed to examine photographic plates and catalogue variable stars — painstaking work that was systematically undervalued and underpaid. Her observations of Cepheid variables in the Small Magellanic Cloud began to suggest a pattern between how long they pulsed and how bright they were. She would publish the full relationship in 1912. It became the first reliable ruler for measuring distances across the universe.

Geiger counter detection device developed

Hans Geiger and Ernest Rutherford developed a tube that could detect individual alpha particles by the pulse of electrical current each one produced when it entered. For the first time, radioactive decay events could be counted one by one. The device made quantitative nuclear physics possible and, rather unexpectedly, became one of the most recognisable sounds of the twentieth century.

Lyman spectral series discovered

Theodore Lyman discovered that hydrogen emits a series of spectral lines in the ultraviolet — invisible to the eye, detectable only with the right instruments. Each series of hydrogen lines corresponded to electrons falling between specific energy levels, adding another piece to a puzzle that Bohr's atomic model would explain within five years.

Tunguska event

At 7:17 in the morning of 30 June, something — most likely a stony asteroid 50 to 80 metres across — exploded in the atmosphere above the Podkamennaya Tunguska river in Siberia with the energy of roughly fifteen megatons of TNT, flattening about 2,000 square kilometres of forest and knocking people off their feet 60 kilometres away. There was no crater. The region was so remote that the first scientific expedition did not reach it for nineteen years.

Ford Model T introduced

Henry Ford introduced the Model T on 1 October, priced at $825 — high by later standards, but lower than any comparable car. As production scaled up and the moving assembly line was introduced from 1913 onward, the price would fall to $260. Ford's stated aim was to build a car for the great multitude, and he did, with consequences for cities, landscapes, and petroleum that unfolded over the following century.