Westinghouse underbid GE, and alternating current won
Westinghouse bid $399,000 against General Electric's $554,000 to light the 1893 Chicago fair, and the win helped settle the AC-DC rivalry.
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History.
Past lives, surviving traces and the stories we choose to remember.
Why Easter's date follows the moon, not the calendar
Easter is the Sunday after the first full moon following the spring equinox. That rule took centuries, and in England a synod at Whitby, to settle.
Frederick Taylor's stopwatch built US scientific management
Frederick Taylor timed factory tasks to fractions of a minute and turned the results into scientific management, a system that made him famous and hated.
New York rewrote factory fire safety after the Triangle fire
A locked stairwell door trapped ninth-floor workers in New York's 1911 Triangle fire, and the state answered with 38 new safety laws.
Pakistani police shot Dhaka students demanding language rights
Police shot Bengali-speaking students in Dhaka in 1952 after they defied a ban on assembly. The protest helped shape Bangladesh's 1971 founding.
Harry Brearley found stainless steel while testing gun barrels
Harry Brearley was hunting for a steel that would stop gun barrels wearing away. In 1913 his Sheffield lab produced one that would not rust instead.
China chose its officials by exam until 1905
China's civil service exam ran from the Tang dynasty to 1905, testing millions on Confucian classics, with about one in a hundred winning a post.
Cyrus Field failed three times before the cable held
Cyrus Field spent nine years and three failed cable attempts trying to link Europe and America by telegraph, before a fourth attempt in 1866 finally held.
Spain's 1697 cession to France began Hispaniola's split
Spain ceded western Hispaniola to France in 1697, and it became Haiti. The Dominican Republic later broke away from Haiti, not Spain, in 1844.
What a blue plaque costs in England, and who decides
A blue plaque has cost about £1,000 to make and install, but no national body sets that fee. Each scheme runs its own rules and its own price.
No decoding of the Voynich manuscript has survived scrutiny
Three researchers have separately announced they cracked the Voynich manuscript's code since 2017. None produced a translation other experts accept.
Josef Čapek coined the word robot, not his brother Karel
Karel Čapek's 1921 play R.U.R. made the word 'robot' famous, but his brother Josef, a painter, is the one who coined it.
Most who fled US slavery began the Underground Railroad alone
The Underground Railroad was no one system. Most freedom seekers set out alone. Where help existed, it came from Black communities, churches and river crews.
The first vaccine began with a cowpox sore
In 1796, Edward Jenner scratched cowpox matter into an eight-year-old boy's arm, then tested him against smallpox itself.
Lebensborn's children are tracing the families the Nazis hid
Adults born under the Nazi Lebensborn programme are opening old files and childhood homes to find the parents its secrecy hid from them.
Nigeria built Abuja to escape the politics of Lagos
Nigeria moved its capital from Lagos to Abuja, chosen as neutral ground. About 300,000 people lived there, and many evicted families still await compensation.
Researchers say QWERTY came from telegraphy, not jams
The usual story says QWERTY stopped typebars jamming. A 2011 Kyoto University paper traces the layout to the needs of telegraph operators.
How Louis Braille turned army night writing into a six-dot code
At 15, Braille reworked a soldier's code of raised dots into a six-dot cell blind people could read and write. He died before it spread widely.
Rochdale's mill workers wrote the rulebook co-ops copied
The Rochdale Pioneers were not the first co-op, but their 1844 rules on dividends, votes and cash-only trade became the model co-operatives copied worldwide.
Iceland's Althing is called the oldest parliament. It has a gap.
Iceland dates its Althing to 930 and calls it the oldest parliament, though the assembly stopped sitting for about 45 years.
A 1958 patent fixed the Lego brick that barely sold
Lego's plastic brick barely sold for years. Godtfred Kirk Christiansen's 1958 coupling patent, not his father's toys, is why it finally gripped.
A decree on the Rosetta Stone let Champollion read hieroglyphs
A priests' decree of 196 BC, carved in three scripts, let Jean-François Champollion read hieroglyphs in 1822. Thomas Young had laid the groundwork.
In 1961, Cuba sent volunteers to teach a million adults to read
Many of the volunteers were teenagers who lived with rural families. By the end of 1961, about 75% of the million adults had basic literacy.
Ford's moving line cut Model T assembly to about 90 minutes
Ford cut assembly from twelve and a half hours to about 90 minutes in 1913. One car design, identical parts and 84 single-step jobs made it possible.