Technology: quotes, facts and reflections - Page 11

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Q1902

WonderEngineering

The Plimsoll line marks the legal loading limit on a ship's hull, with additional lines accounting for water density and seasonal sea conditions.

Nineteenth-century campaigner Samuel Plimsoll fought the deadly practice of sending dangerously overloaded ships to sea. The mark turns a hidden risk—lost freeboard and reserve buoyancy—into a public threshold visible on the hull, while variants recognise that a vessel floats differently in fresh water, salt water, winter and tropical conditions. It is regulation condensed into graphic design. A few painted strokes give the ocean authority over the manifest.

Plimsoll lineRead card

Q1985

WonderScience

Gladys West's satellite-data calculations refined mathematical models of Earth's shape, work that became foundational to the accuracy of GPS.

At the U.S. Navy's Dahlgren laboratory, West programmed computers to process satellite observations and helped refine the geoid, reference ellipsoid and satellite-orbit models. The geoid follows a gravity-shaped mean sea level; the ellipsoid supplies a clean mathematical reference; orbit calculations locate spacecraft relative to Earth. Together, those geodetic frameworks helped make satellite positioning accurate. Decades before a phone could locate itself, her calculations gave satellites a more exact planet to work from.

Gladys WestRead card

Q1986

DriveSpace

Dorothy Vaughan led NACA's segregated West Area Computers, then mastered FORTRAN and prepared her colleagues for NASA's shift from human to electronic computing.

In 1949 Vaughan became NACA's first Black supervisor, managing mathematicians whose hand calculations supported aeronautical research. As electronic computers arrived, she learned FORTRAN and built programming expertise across the group, helping colleagues prepare for new roles as NASA integrated its computing divisions. She later contributed to the Scout launch vehicle. Her distinction was not personal adaptability alone; she turned foresight into collective preparation.

Dorothy VaughanRead card

Q1988

DriveBiography

Christine Darden developed computer models for predicting and reducing sonic booms, helping engineers reshape supersonic aircraft to soften their acoustic impact.

Darden arrived at NASA Langley in 1967 as a human computer, one of the last generation hired to perform calculations for engineers. Six years later she moved into aerospace engineering and wrote code to model the shock waves that gather into a sonic boom. Her work helped show that noise on the ground could be influenced by an aircraft's geometry rather than accepted as the fixed price of speed. She eventually led the sonic-boom group: the person once assigned the arithmetic came to shape the research question.

Christine DardenRead card

Q1989

DriveBiography

Annie Easley moved from hand calculation to programming, developing and testing code for energy systems, battery research and NASA's Centaur upper-stage rocket.

Easley joined the aircraft engine laboratory in Cleveland in 1955 as one of only four Black employees, calculating research problems by hand. As electronic computers took over, she learned FORTRAN and SOAP rather than letting automation define the edge of her career. Her code supported studies of alternative power and the liquid-hydrogen Centaur stage that sent spacecraft towards the Moon and planets. Adaptability here was not a slogan; it was a new syntax learned while the workplace itself was changing.

Annie EasleyRead card

Q1990

DriveBiography

Evelyn Boyd Granville helped formulate orbit calculations and computer procedures for Projects Vanguard and Mercury, then contributed mathematical support to Apollo-era work.

Granville earned her Yale doctorate in 1949, becoming one of the first Black women in the United States to receive a PhD in mathematics. At IBM's Vanguard Computing Centre she worked where celestial mechanics met early electronic programming, translating trajectories into procedures a machine could execute during the opening years of the space age. She later returned to the classroom for a long career in mathematics education. Her work moved in both directions: equations carried vehicles upward, and teaching carried knowledge forward.

Evelyn Boyd GranvilleRead card

Q1991

WonderBiography

Radia Perlman's spanning-tree algorithm lets network bridges agree on a loop-free path, blocking redundant links until a failure makes one useful again.

Redundant connections make a network resilient, but unmanaged loops can make frames circulate and multiply until communication collapses. Perlman's 1980s algorithm lets distributed switches elect a logical tree, temporarily quieting selected links while preserving them as alternative routes. If the topology changes, the tree can be calculated again. The elegance is institutional as much as mathematical: no central traffic officer is required, yet independent machines arrive at one workable map.

Radia PerlmanRead card

Q1993

WonderBiography

Ingrid Daubechies constructed compactly supported orthonormal wavelets that made multiscale signal analysis practical for digital compression, denoising and reconstruction.

A Fourier analysis tells which frequencies exist, but wavelets can also preserve where a brief change or sharp edge occurs. Daubechies found finite, mathematically exact families that could be computed efficiently and reconstruct the original signal. Their descendants live in JPEG 2000, fingerprint storage, medical imaging and scientific data. Her abstraction succeeds because it is selective without being careless: it gives smooth areas less attention and spends detail where the world changes.

Ingrid DaubechiesRead card

Q2000

DriveBiography

Gertrude B. Elion and George Hitchings designed drugs around biochemical differences between healthy cells and their targets, establishing principles of rational drug development.

Elion joined Hitchings at Burroughs Wellcome in 1944 and learned across chemistry, microbiology, pharmacology and virology. Their teams made analogues that could interrupt the metabolism of a tumour, microbe or immune cell more selectively than blind screening allowed. That programme yielded 6-mercaptopurine for leukaemia, azathioprine for transplantation, allopurinol for gout and later work central to acyclovir for herpes viruses. Her 1988 Nobel Prize honoured a method larger than any one medicine: begin with how life works, then design the interruption.

Gertrude B. ElionRead card

Q2001

WonderScience

In a cloud chamber, ions left by a charged particle seed droplets in supersaturated vapour, turning an invisible passage into a bright, photographable track.

Charles Wilson began by studying how clouds form. Rapid expansion cooled moist air in his chamber until its vapour was ready to condense; a charged particle supplied a thread of ions on which droplets gathered. Magnetic fields bent the particles' paths; the resulting curved tracks let physicists infer charge and momentum from geometry. Cloud-chamber photographs helped reveal cosmic-ray events and the positron. The instrument did not photograph the particle itself. It photographed the atmosphere's exquisitely brief reply.

Cloud chamberRead card

Q2002

WonderScience

A scanning tunnelling microscope maps a conducting surface by holding an atom-sharp tip extremely close and measuring the quantum current that tunnels across the gap.

Classically, electrons in the sample and tip should remain separated by the vacuum barrier. Quantum mechanics gives their wave-like probability a small reach beyond it, creating a tunnelling current that changes steeply with distance. As feedback raises and lowers the tip to keep that current steady, the motion becomes a map of the surface's electronic topography. Gerd Binnig and Heinrich Rohrer turned this effect into an instrument at IBM Zurich, earning a share of the 1986 Physics Nobel Prize. Near enough, a forbidden crossing becomes a ruler.

Scanning tunnelling microscopeRead card

Q2003

WonderScience

An atomic force microscope follows a surface with a tip on a tiny cantilever, translating minute forces and deflections into a three-dimensional nanoscale map.

Scanning tunnelling microscopy depended on an electrical current and therefore favoured conducting samples. In 1986 Gerd Binnig, Calvin Quate and Christoph Gerber proposed a different messenger: force. Their microscopic tip can touch a surface or hover just above it while attraction and repulsion bend the cantilever; a laser commonly magnifies that motion for the detector. Because the method can work on insulators and in liquids as well as in vacuum, it brought polymers, membranes and biological structures into the nanoscale landscape. Seeing became a disciplined form of touch.

Atomic force microscopyRead card

Q2004

WonderScience

Electron microscopes use short-wavelength electron beams and electromagnetic lenses to resolve structures far smaller than visible-light microscopy can distinguish.

A light microscope loses resolving power when the details approach the wavelength of its illumination. Electrons also behave as waves, but accelerated electrons can have much shorter wavelengths. Ernst Ruska and Max Knoll used magnetic coils to focus them; their 1931 prototype led to Ruska's 1933 instrument that surpassed optical resolution. Modern transmission instruments send electrons through very thin specimens, while scanning designs read signals from surfaces. The images require vacuum, preparation and interpretation, yet they opened cells, viruses and materials far beyond the frontier of glass lenses.

Electron microscopeRead card

Q2005

WonderScience

Mass spectrometry ionizes a sample, separates the resulting ions by mass-to-charge ratio and records their abundance, producing spectra that can reveal compounds, isotopes and molecular structure.

The instrument is no microscopic weighing pan. An ion source gives atoms or molecules charge; an analyser sorts their paths or flight times; a detector counts what arrives. Some methods preserve large molecules, while others break them into informative fragments. A mass-to-charge value narrows identity but rarely announces it: the peaks become evidence through calibration, chemistry and reference spectra.

Mass spectrometryRead card

Q2009

WonderTechnology

Lidar times the return of laser pulses to build three-dimensional point clouds; pulses reaching ground through canopy gaps can expose subtle terrain and archaeological landscapes hidden by vegetation.

A lidar instrument sends rapid pulses and converts each round-trip travel time into distance. Aircraft or satellites repeat the measurement millions of times, assembling a point cloud of roofs, branches and ground. The light does not pass through solid leaves; enough pulses find small openings for analysts to separate canopy returns from terrain. Remove the digital forest and old roads, terraces or foundations can emerge without a spade entering the soil.

LidarRead card

Q2011

WonderOcean

Thousands of autonomous Argo floats repeatedly descend and rise through the ocean, measuring temperature, salinity and pressure before surfacing to transmit open data by satellite.

A typical Core Argo float drifts deep for days, sinks towards about 2,000 metres, then profiles the water as it rises. At the surface it sends measurements and position to satellites before diving again, usually completing a cycle in roughly ten days. Distributed across the world's oceans, the fleet has turned vast, rarely visited water into a continuously renewed climate record available to everyone.

Argo (oceanography)Read card

Q2012

WonderScience

A Kibble balance realises the kilogram by balancing weight against electromagnetic force measured with quantum electrical standards tied to the fixed value of Planck's constant.

The balance works in two linked modes. One matches a mass's weight with magnetic force on a current-carrying coil; the other moves the coil to calibrate the same system through induced voltage. Quantum standards make the electrical measurements traceable to Planck's constant, whose value was fixed in the 2019 SI. A suitably equipped metrology institute can now realise mass from a reproducible recipe instead of comparing everything to one ageing object.

Kibble balanceRead card

Q2024

DriveHistory

After the credit association he chaired collapsed in 1957 and left him nearly penniless, Momofuku Ando spent a year experimenting in a backyard shed in Osaka. In 1958, at 48, he launched the world's first instant ramen.

The breakthrough came from watching his wife fry tempura: flash-frying noodles in hot oil dried them into a block that boiling water could revive in minutes. Chicken Ramen launched on 25 August 1958. Ando wasn't finished — at 61 he invented Cup Noodles after watching Americans break his noodles into paper cups. He worked into his nineties, and Japan has repeatedly voted instant ramen its proudest invention of the twentieth century.

Momofuku AndoRead card

Q2035

DriveTechnology

During Malawi's 2001–02 famine, 14-year-old William Kamkwamba had to drop out of school. Using diagrams from a library book called 'Using Energy', he built a windmill from a bicycle frame, blue-gum poles and scrapyard parts — and lit his family's house.

The first machine powered four lights and two radios; neighbours queued to charge mobile phones, and later versions pumped water for the family fields. He had read the physics with a dictionary beside him, because the book was in English. The story travelled — a TED stage, a bestselling memoir, a film — but its core stays small and stubborn: a boy, a library card, and wind that had been blowing over the village all along.

William KamkwambaRead card

Q2040

StillnessArt

In 2011, Norway's public broadcaster televised a coastal voyage in full: 134 hours, live, unedited. Roughly half the population tuned in at some point. 'Slow TV' had begun two years earlier with a seven-hour train ride that became a surprise hit.

The Bergen-to-Oslo train broadcast of 2009 drew over a million Norwegian viewers, many of whom reportedly reached for their coats at the final station announcement. The Hurtigruten voyage of June 2011 still holds the record for the longest live documentary ever aired. No plot, no commentary, no cuts — just coastline, weather and the occasional waving crowd on a pier. Its makers' theory: television had forgotten that attention can be restful rather than captured.

Slow televisionRead card

Q2049

StillnessMind

On Japanese railways, drivers and platform staff point at signals, gauges and doors while calling their status aloud — a ritual called shisa kanko. In a railway institute experiment, the habit cut errors on a routine task to about one-sixth.

The gesture looks theatrical to visitors — a white-gloved conductor pointing down an empty platform, announcing 'all clear' to nobody. But the mechanism is sound: pointing forces the eyes to the object, speaking forces the mind to commit, and together they interrupt the autopilot that lets a familiar task slip past unchecked. The figure comes from a laboratory task rather than accident records, so hold it loosely; New York's subway adopted a pointing-only version anyway.

Shisa kankoRead card

Q2059

WonderHistory

In January 1917, Germany's foreign secretary cabled Mexico an offer: join a war against the United States and recover Texas, New Mexico and Arizona. Britain's Room 40 decrypted it, and its publication helped carry America into the First World War.

The decisive push had come from Germany's return to unrestricted submarine warfare; the telegram turned outrage personal. Its strangest twist came after publication in March 1917, when sceptics called it a British forgery — and Arthur Zimmermann himself confirmed he had sent it. The United States declared war that April. The episode founded a modern truth: signals intelligence could now move nations, quietly, from a room of linguists and puzzle-solvers.

Zimmermann TelegramRead card

Q2063

WonderHistory

The Sweet Track, a raised oak walkway across England's Somerset marshes, can be dated by its tree rings to timber felled in the winter of 3807 to 3806 BC — a single year's precision, from nearly six millennia away.

Neolithic farmers prefabricated pegs, rails and planks, then assembled almost two kilometres of walkway across the wetland — plausibly within a season. It even follows the line of a slightly older track from 3838 BC. Waterlogged peat preserved the wood, and tree-ring science did the rest: each ring is one year, and the final ring under the bark names the felling season itself. Few written dates from antiquity are as trustworthy as this one, told by the trees.

Sweet TrackRead card

Q2064

WonderScience

The solar storm of September 1859 threw auroras as far south as Cuba and set telegraph equipment sparking. On one American line, operators disconnected their batteries and kept sending — powered for two hours by the storm's current alone.

Hours before the storm struck, astronomer Richard Carrington happened to be sketching sunspots when a blinding white flare erupted under his gaze — the first solar flare ever witnessed. The exchange between the Boston and Portland operators survives in the contemporary press: they agreed by wire to cut their batteries, and the line worked better without them. A storm of that size today would test satellites and power grids planet-wide, which is why space-weather forecasters still speak of 'another Carrington'.

Carrington EventRead card