The invention of the white LED lightbulb

The invention of the white LED lightbulb

In 1993, a literal lightbulb moment led to the invention of the first white light emitting diode (LED).

These LEDs are now used to light up everything from our streets to our homes to this screen you’re looking at.

Along with two other Japanese engineers, Professor Shuji Nakamura, was behind this illuminating invention.

But Shuji’s journey to this point is one of resilience and perseverance. In his pursuit to discover the first commercial white LED, he had to overcome many obstacles along the way.

With less funding than his counterparts and one of the only inventors without a PhD degree, Shuji stood out from the crowd.

He set out to get his PhD degree and found one of the most sought-after inventions along the way.

Professor Shuji Nakamura speaks to Natasha Fernandes about finding the light and how it might not be what you would expect.

Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more.

Recent episodes explore everything from football in Brazil, the history of the ‘Indian Titanic’ and the invention of air fryers, to Public Enemy’s Fight The Power, subway art and the political crisis in Georgia. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: visionary architect Antoni Gaudi and the design of the Sagrada Familia; Michael Jordan and his bespoke Nike trainers; Princess Diana at the Taj Mahal; and Görel Hanser, manager of legendary Swedish pop band Abba on the influence they’ve had on the music industry. You can learn all about fascinating and surprising stories, such as the time an Iraqi journalist hurled his shoes at the President of the United States in protest of America’s occupation of Iraq; the creation of the Hollywood commercial that changed advertising forever; and the ascent of the first Aboriginal MP.

(Photo: Shuji Nakamura speaks during a news conference with LED lights on display. Credit: Kevork Djansezian via Getty Images)

Avsnitt(2000)

World's first womb transplant baby

World's first womb transplant baby

In September 2014, the world's first baby was born to a mother with a transplanted womb, making headlines around the globe.Malin Stenberg had the pioneering surgery over a year earlier when she received the donated organ from a family friend, giving birth to her son Vincent at Sahlgrenska University Hospital in Sweden.Reena Stanton-Sharma speaks to Prof Pernilla Dahm-Kähler, who was a member of the talented team whose dedication would help bring Vincent into the world.Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.(Photo: Prof Pernilla Dahm-Kähler. Credit: University of Gothenburg)

4 Sep 10min

The Chindits

The Chindits

During World War Two, an unconventional special force was formed. Known as the Chindits, they fought behind enemy lines in Burma, now Myanmar during 1943 and 1944 in the war against Japan.Their leader was the charismatic Orde Wingate, a British Army officer. This programme is made in collaboration with BBC Archives. It contains outdated and offensive language.Produced and presented by Gill Kearsley. Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.This programme has been updated since the original broadcast to add additional context.(Photo: The Chindits in 1944. Credit: Getty Images)

3 Sep 10min

The founding of USAID

The founding of USAID

On 3 November 1961, the United States Agency for International Development (USAID) was founded, bringing all existing aid work under one single agency. A key proponent of it was Barbara Ward, a pioneering British economist and journalist who had the ear of presidents and prime ministers across the world. Later known as Baroness Jackson, she spoke to the John F Kennedy Presidential Library and Museum Oral History Program in 1964 about how the newly independent West African nation of Ghana was one of the first countries to benefit with funds to construct the Volta River Project. Surya Elango listens back to those archive interviews.Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.(Photo: Barbara Ward. Credit: Getty Images)

2 Sep 10min

Discovering the Titanic

Discovering the Titanic

In September 1985, the wreck of the Titanic was discovered around 400 nautical miles off the coast of Newfoundland, Canada, during a joint American-French expedition.It had remained undisturbed, 13,000 feet underwater in the North Atlantic Ocean, since it sank during its maiden voyage in 1912.The team spotted a boiler using a remotely controlled deep-sea vehicle, called Argo, and a robot named Jason, which led them to the site of the wreck.In 2010, Louise Hidalgo spoke to some of the explorers and listened to archive recordings. Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.(Photo: Titantic bow. Credit: Getty Images)

1 Sep 10min

John Lennon's final headline concerts

John Lennon's final headline concerts

In 1972, after leaving The Beatles, John Lennon and Yoko Ono performed in the United States at the One to One benefit concerts at Madison Square Garden, New York. They were helping to raise money for children with disabilities from Willowbrook State School, after a television exposé by journalist Geraldo Rivera showed the conditions and failings. It was watched by millions of people and led to a public outcry.Sean Allsop speaks with Geraldo Rivera about breaking the story and organising the concerts. A TBone production.Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.(Photo: John Lennon performing at the One To One events. Credit: Ann Limongello/ABC)

29 Aug 9min

The making of the Third Man: A film noir classic

The making of the Third Man: A film noir classic

In 1948, filming began on a post-war thriller that would become one of the greatest British movies of all time.Directed by Sir Carol Reed, the film captured the atmosphere of a divided, ruined Vienna. But much of its lasting power lies with Orson Welles, whose magnetic, menacing turn as Harry Lime stole the show - despite his limited screen time and reputation for being famously hard to pin down. Phil Jones speaks to production assistant Angela Allen about the film that became legend.Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.(Photo: Harry Lime, played by Orson Welles in The Third Man. Credit: Corbis via Getty Images)

28 Aug 9min

Washington DC’s Mount Pleasant riot

Washington DC’s Mount Pleasant riot

In May 1991, a female police officer shot and wounded a young immigrant from El Salvador in the Mount Pleasant neighbourhood in Washington DC in the United States. It sparked several days of disturbances in the largely Hispanic area, as the population vented its frustrations at years of feeling sidelined by city officials. Shops were burnt down, cars overturned, and dozens of people were arrested before the police took back control of the streets. But for the first time, it gave visibility to a community that had been largely ignored. Mike Lanchin hears from musician and former resident of Mount Pleasant, Victor ‘Lilo’ Gonzalez. A CTVC production.Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.(Photo: Marchers fill the streets in Mount Pleasant in Washington DC in 1991. Credit: Reuters)

27 Aug 9min

Creating CAPTCHA

Creating CAPTCHA

In 2000, as the internet expanded, websites faced a growing challenge to stop spam bots from flooding their systems.To separate humans from machines, researchers at the United States’ Carnegie Mellon University in Pittsburgh, Pennsylvania, created the Completely Automated Public Turing test.From its early development to its evolution into reCAPTCHA it continues to block millions of automated attacks every day.Ashley Byrne speaks to computer scientist Andrei Broder, who played a key role in developing the concepts that helped shape this technology.A Made in Manchester production. Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest; the disastrous D-Day rehearsal; and the death of one of the world’s oldest languages.(Photo: I am not a robot. Credit: Stock image / Vector Illustration)

26 Aug 10min

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