The incredible power of blue LEDs - BBC News
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LEDs dominate lighting systems but their efficiency rests on the tricky production of blue light.
The incredible power of blue LEDs - BBC News
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Invention of blue LEDs wins physics Nobel - BBC News
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Portugal's tech boom challenged by tax change - BBC News
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Nasa: Blue jet space lightning spotted by scientists from the ISS
Could airports make hydrogen work as a fuel? - BBC News
