Appearance
2.4 — The Nineteenth Century
The century in which distance stopped mattering. At its start, a message crossed the Atlantic at the speed of a sailing ship; by its end it crossed in minutes, and a person could be photographed, recorded and filmed.
Power and distance
1825 and 1830 — the railway becomes public
The Stockton and Darlington opened in 1825 carrying coal, with passengers as an afterthought. The Liverpool and Manchester in 1830 was the real beginning: the first railway built to move people and goods between two cities on a timetable, hauled entirely by locomotives.
Two things happened on opening day that tell you the whole century. The line was a commercial success immediately, far beyond its projections. And William Huskisson, a member of parliament, stepped onto the track to speak to the Duke of Wellington, was struck by Stephenson's Rocket, and became one of the first people killed by a train. The public had no instinct yet for how fast a machine could arrive.
The railway also forced a change nobody anticipated. Every town had kept its own time, set by the local sun, so Bristol ran about ten minutes behind London. A timetable makes that impossible, and Britain standardised on a single railway time in the 1840s. The clock on your wall shows railway time, and the world's time zones came from the same pressure at global scale in 1884.
1837–1866 — the telegraph, and the end of distance
Cooke and Wheatstone patented a working electric telegraph in Britain in 1837; Samuel Morse demonstrated his system in America in 1844 with the message "What hath God wrought". For the first time in history, information could move faster than a person carrying it.
Every previous message in human history — a runner, a rider, a pigeon, a ship — travelled with a physical object. The telegraph broke that link permanently, and the consequences arrived quickly: national news, financial markets that quoted the same price in two cities, weather warnings that outrun the storm, railway signalling, and armies commanded from capitals.
The Atlantic cable is a story of stubbornness. The 1858 cable worked for three weeks, degraded by a chief electrician who tried to force signals through with high voltage and destroyed the insulation, then failed. Cyrus Field kept raising money through a war and two more failures. The 1866 cable worked, and it is still possible to trace the descendants of that route in today's fibre-optic map, because the seabed geography that suited one suits the other.
Morse code's design is worth one line: the most common letter in English, E, is a single dot, and T is a single dash, while rare letters like Q and Z get four symbols. Morse's assistant Alfred Vail worked out the letter frequencies by counting the type in a newspaper's print shop. That is variable-length encoding by frequency, the same principle underneath the file compression in 1.5, a century before information theory named it.
1839 — photography, announced twice
Louis Daguerre in France and William Fox Talbot in England published competing processes within months of each other. The French government bought Daguerre's and gave it to the world free — apart from Britain, where it was patented, out of rivalry.
Talbot's process lost the publicity and won the future. A daguerreotype is a unique image on a silvered plate: beautiful, sharp, and impossible to copy. Talbot's calotype produced a paper negative from which any number of positives could be printed. Every photographic system until digital used that negative-positive logic.
What photography did to painting is a genuine turning point in art. Once a machine could record appearance accurately and cheaply, the case for painting as accurate recording collapsed — and painters went looking for what a photograph could not do, which is roughly the story of the next hundred years of art in 8.1.
Life and matter
1859 — On the Origin of Species
Darwin had the idea by 1838 and sat on it for twenty years, writing a 230-page sketch and instructing his wife to publish it if he died. What forced him into print was a letter in 1858 from Alfred Russel Wallace, a younger naturalist working in the Malay Archipelago, setting out essentially the same theory and asking Darwin's opinion of it.
Their friends arranged a joint presentation, and Darwin wrote the book in thirteen months. Wallace's independent arrival at the same idea is the strongest evidence that it was there to be found — the ingredients, variation and inheritance and competition for limited resources, were all available, and two people looking hard at the same living world assembled them.
Three things the book is routinely misread on. It does not say humans descend from monkeys; it says humans and other apes share ancestors. It does not say "survival of the fittest" — that phrase is Herbert Spencer's, and Darwin adopted it reluctantly in a later edition, where fittest means best fitted to a particular environment, not strongest. And Darwin had no idea how inheritance worked; the mechanism was sitting unread in a paper by Gregor Mendel, published in 1866 in an obscure journal and ignored until 1900.
1854 — John Snow and the Broad Street pump
Cholera was killing thousands in London and the accepted explanation was miasma, bad air rising from filth. John Snow, a physician, thought it was waterborne, and during an outbreak in Soho he did something new: he mapped it.
He plotted every death on a street map and found them clustered around one public water pump on Broad Street. He then chased the exceptions, which is what makes it real science rather than a suggestive picture. The workhouse in the middle of the outbreak had almost no cases — it had its own well. The brewery had none — the workers drank beer. A woman who had died in Hampstead, far away, turned out to have liked the taste of Broad Street water and had it delivered.
He persuaded the parish to remove the pump handle. The outbreak was already declining, so the removal probably saved fewer lives than the legend claims, but the method is the point, and it founded epidemiology. The authorities rejected his conclusion at the time; the pump was reconnected.
1869 — Mendeleev's periodic table
Sixty-three elements were known and there was no agreed way to organise them. Dmitri Mendeleev arranged them by atomic weight and noticed that chemical properties repeated periodically as the weight increased.
The move that made him right rather than merely tidy was leaving gaps. Where the pattern demanded an element that nobody had found, he left a space and predicted the missing element's weight, density and behaviour. Gallium was found in 1875, scandium in 1879, germanium in 1886, each matching his predictions closely. A classification that only organises what is known is a filing system; one that predicts what is missing is a theory.
He also put a few elements out of weight order because their chemistry demanded it. He was right, and the reason emerged decades later: the true ordering is by number of protons, not by weight, which Henry Moseley established in 1913.
India and empire
1857 — the Revolt
It began with sepoys of the Company's Bengal Army at Meerut and spread across northern India, drawing in landholders, dispossessed rulers and peasants, and lasted over a year.
The immediate trigger was the Enfield rifle cartridge, which had to be bitten open and was greased with animal fat, offending both Hindu and Muslim soldiers. The trigger is not the cause. Underneath were decades of annexations under the Doctrine of Lapse, which let the Company take any princely state whose ruler died without a natural heir; the collapse of Indian textile manufacturing under British trade policy; land settlements that dispossessed established holders; and the growing sense that conversion was official policy.
It failed, and it was suppressed with reprisals that included mass executions. But it ended the East India Company: in 1858 the Crown took direct control, and the Governor-General became a Viceroy. What Britain called the Mutiny, and India now calls the First War of Independence, produced the Raj.
1885 — the Indian National Congress
Founded in Bombay by seventy-two delegates, with a retired British civil servant, Allan Octavian Hume, among its organisers, and initially asking for nothing more than a greater Indian share in the administration.
It is worth knowing that it started this moderately, because the distance travelled is the story. Over sixty years it became the vehicle for the largest mass political movement in history and the party that took power in 1947.
Machines, cities and the twentieth century arriving early
1876 and 1877 — the telephone and the phonograph
Bell filed his telephone patent on 14 February 1876, hours before Elisha Gray filed a caveat on a related design, and the priority has been argued about ever since. Antonio Meucci had demonstrated a working device years earlier and could not afford to maintain the patent. The pattern is normal: an invention arrives when its components are all available, and several people reach it at once.
Edison's phonograph in 1877 is the stranger achievement, because there was no partial version. He recorded sound as a groove pressed into tinfoil by a vibrating needle and played it back by running the needle through the groove again. It worked on the first attempt, and the first words recorded were "Mary had a little lamb". Nobody before had ever heard a sound made in the past. Every human voice that had ever spoken, up to that year, was gone.
1879 and 1882 — electric light, and the grid that mattered more
Edison did not invent the light bulb; roughly twenty people had made incandescent lamps before him, and Joseph Swan had a working one in England at the same time. Edison's contribution was a carbon filament of high enough resistance to be practical in a distribution network, and a very large amount of systematic testing.
What he actually built was the system. The Pearl Street station in Manhattan opened in 1882 with generators, underground cables, meters to bill customers, fuses, and lamps. The bulb is the visible part of an invention whose real content is generation, distribution and billing — a lesson worth carrying into any modern technology, where the product is usually the least of it.
The direct-current system he built lost the War of the Currents to alternating current promoted by Westinghouse and engineered by Nikola Tesla, for the reason given in 1.7: AC can be transformed to high voltage for transmission and back down for use, and DC at the time could not.
1885–1886 — the motor car
Karl Benz patented the Motorwagen, a three-wheeler with an internal combustion engine, in January 1886. The event worth remembering is a year later and belongs to his wife.
Bertha Benz took the car, without telling him, and drove 106 kilometres from Mannheim to Pforzheim with their two teenage sons — the first long-distance journey by automobile. She bought fuel at a pharmacy, because petrol was sold as a cleaning solvent and there were no filling stations. She cleared a blocked fuel line with a hatpin, insulated a wire with her garter, and had a blacksmith re-line the brakes, which is the invention of the brake lining. Her trip was a publicity exercise, and it worked; the car began selling.
1895 — X-rays, radio, and the first film show
An extraordinary year. Wilhelm Röntgen noticed a screen glowing across his darkened laboratory while a shielded tube was running, worked out that some unknown radiation was passing through solid objects, and within weeks photographed the bones of his wife's hand. She said, "I have seen my death." He refused to patent it, and within a year hospitals across Europe and America were using X-rays.
Marconi began transmitting radio signals over increasing distances the same year, building on Hertz's demonstration of electromagnetic waves in 1887. And in December, the Lumière brothers projected films to a paying audience in Paris — the beginning of 7.1.
1896 — the Olympics restart, and radioactivity is noticed by accident
The first modern Olympic Games opened in Athens with 241 athletes from 14 nations, all men, revived by Pierre de Coubertin.
In Paris the same year, Henri Becquerel put uranium salts on a photographic plate expecting sunlight to be necessary for the effect he was testing, was defeated by cloudy weather, developed the plate anyway out of curiosity, and found it strongly exposed. The uranium was emitting something on its own, with no external energy source. Marie and Pierre Curie took up the problem, isolated polonium and radium, and Marie named the phenomenon radioactivity.
It is the first crack in the classical world. A material giving out energy indefinitely with nothing put in should have been impossible, and explaining it required the atom to have an interior — which is where Volume IV picks the story up.
What comes next
The next page covers 1900 to 1945: the forty-five years in which physics was rebuilt twice, in which two wars killed something like eighty million people, and at the end of which humans could destroy a city with one object.