While LED’s were first invented in the 1960s, it wasn’t until much later in the 1990s that scientists finally discovered a method of making blue LEDs.  White light could now be produced either by mixing blue with red and green light, or by a different method using only blue LEDs  This opened up LED technology to a world of potential applications, including the next-generation light bulb. This discovery had such important implications that the three scientists involved in its discovery were awarded the Nobel Prize for Physics in 2014.


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