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Japanese scientists win Nobel Prize in physics for their invention of environmentally-friendly blue LEDs

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Japanese scientists win Nobel Prize in physics for their invention of environmentally-friendly blue LEDs

Three Japanese-born scientists have won the Nobel Prize in physics for inventing blue-light emitting diodes (LEDs) that have revolutionised the lighting industry.

Isamu Akasaki and Hiroshi Amano of Japan and U.S. scientist Shuji Nakamura won the award for their 1990s invention, which has led to the use of environmentally-friendly light sources worldwide, Daily Mail reported.

The Royal Swedish Academy of Sciences said the technology is just 20 years old, "but it has already contributed to create white light in an entirely new manner to the benefit of us all."

The laureates triggered a transformation of lighting technology when they produced bright blue light from semiconductors, something scientist had struggled with for decades, the Nobel committee said.

Using the blue light, LED lamps emitting white light could be created in a new way.

"As about one fourth of world electricity consumption is used for lighting purposes, the LEDs contribute to saving the Earth's resources," the committee said.

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