This is well worth a watch, it's the story of Shuji Nakamura who invented the blue LED<br><br><a href="https://blog.adafruit.com/2024/02/13/why-it-was-almost-impossible-to-make-the-blue-led/">https://blog.adafruit.com/2024/02/13/why-it-was-almost-impossible-to-make-the-blue-led/</a><br><br><br>Sent from Proton Mail mobile<br><br><br>