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The discovery of blue LEDs by Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura in the early 1990s revolutionized technology. Before this, red and green LEDs were common, but blue was elusive. Blue LEDs enabled the creation of white LED light by combining blue with existing red and green LEDs, leading to highly efficient and long-lasting light sources. This innovation significantly reduced energy consumption and carbon footprints worldwide. The technology paved the way for brighter screens in smartphones, computers, and TVs, and improved medical devices. For their groundbreaking work, the trio received the Nobel Prize in Physics in 2014.
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00:00 Introduction
02:45 How electromagnetic radiations are formed
05:00 What are semiconductors
05:30 What are diodes
06:20 What are LEDs
07:40 Why Blue LED was difficult to make
08:24 How Nakamura made Blue LED
11:00 Struggle of Shuji Nakamura

#nobelprize #physics