Ernst Werner von Siemens

By Emre Yıldırım

Ernst Werner von Siemens was born in 1816 in Lenthe, Hanover, the eldest of fourteen children of a tenant farmer, and the Prussian army became his university: he joined the artillery, studied at the artillery and engineering school in Berlin, and learned electricity as an officer's science. In 1847, with the mechanic Johann Georg Halske, he founded a workshop in Berlin — ten men, building telegraphs. Siemens' pointer telegraph replaced Morse's clicking sounder with a needle that pointed at letters on a dial: simpler to read, easier to train operators for, and it won the contracts. When revolution broke out in 1848, Siemens was laying Prussia's first long telegraph line, Berlin to Frankfurt; within years his firm was wiring Russia, from St. Petersburg to the Crimea, and laying the Indo-European line from London to Calcutta.

The invention that made his name immortal came in 1866: the dynamo-electric principle. Generators then needed permanent magnets or separate batteries to excite their field coils — weak, expensive, limited. Siemens realized the machine could excite itself: feed a fraction of its own output back into the field coils, and the tiny residual magnetism in the iron would bootstrap into a powerful field, growing with the output. The self-excited dynamo made cheap, abundant electric power possible for the first time — no batteries, no permanent magnets, just motion in and power out. Siemens demonstrated it in 1867; within a decade, dynamos were lighting streets and driving machinery, and the electrical industry — the second industrial revolution — had its prime mover.

He kept inventing into old age: in 1879 his firm built the first electric railway at the Berlin Industrial Exposition, a little train carrying passengers on a 300-meter loop; in 1881 the first public electric tramway opened at Lichterfelde, near Berlin, and the electric streetcar conquered the world's cities within twenty years. Ennobled in 1888, he died in Berlin in 1892, founder of the company that still bears his name. Siemens was the rare combination — the officer-engineer who built an empire on the principle that electricity should be generated, not just stored. The firm was a family affair: Werner's brothers Carl and Wilhelm carried Siemens & Halske to London and St. Petersburg, building a multinational before the word existed. The Indo-European telegraph — London to Tehran to Calcutta, 11,000 kilometers of wire through Persia — was the Victorian internet, carrying a message from Britain to India in hours instead of months by ship. Halske left the partnership in 1867, preferring precision instruments to empire; Werner kept the empire. By his death the company employed thousands and made everything from dynamos to telephones. The tramway at Lichterfelde ran on 180 volts from the rails themselves — passengers reportedly stepped aboard with some nervousness, and stepped off converts.

Impact on civilization

The self-excited dynamo is the machine that made the electrical age affordable. Before it, electric power meant batteries — expensive, weak, and exhaustible. After it, power meant spinning a dynamo: cheap current in industrial quantities, the precondition for electric lighting, electric motors, electrochemistry, and the entire electrical industry. Siemens' dynamos lit the first electrically illuminated streets and boulevards, powered the first electric railways, and drove the factories of the second industrial revolution. The pointer telegraph, meanwhile, wired empires — his lines carried the orders of the Russian state across eleven time zones and linked London to Calcutta — proving that electrical communication could be an instrument of government at continental scale. And the electric tram reshaped the city itself: streetcars made the suburb possible, letting workers live miles from the factory and inventing the commuter metropolis. Siemens generated the power, transmitted the orders, and moved the people. His career proved the industrial research laboratory as an institution: systematic invention, from telegraph to dynamo to tram, carried out by organized teams. The corporate lab — Edison's Menlo Park, Bell Labs — follows the Siemens pattern.