Understanding LEDs: From Electro-Illuminescence to Visible Light Emission

One of the most important inventions in human history was artificial lighting.

With the electric lightbulb, the night could be illuminated, allowing people to extend their productive hours in the day and to work in places that were otherwise difficult or impossible. 

While the incandescent bulb was a breakthrough, it wasn’t actually very efficient. It wouldn’t be until decades later that a radically more efficient way of producing artificial light would be developed.

Learn more about LEDs or light-emitting diodes and how they work on this episode of Everything Everywhere Daily.

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