It was a discovery which changed our lives: the discovery of cheap, stable blue light emitting diodes, known commonly as LEDs. Green, red and even infrared LEDs have existed since the 1960s, but it wasn't until the early 1990s that a trio of Japanese researchers cracked the code. Their success resulted in the creation of white LEDs which are now used everywhere, from televisions to aeroplanes. Gavin Shoebridge spoke to one of the brains behind the creation, the Nobel Prize winner Professor Hiroshi Amano, on his recent visit to Bratislava.
Nobel Prize winner - Professor Hiroshi Amano
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