Blue light

By Dyan513
  • 1 BCE

    Sun

    The blue light was there in the sun
  • Period: to

    The sun has blue light was discovered

  • When was blue light invented

    When was blue light invented

    Professors Isamu Akasaki, Hiroshi Amano and Shuji Nakamura made the first blue LEDs in the early 1990s. This enabled a new generation of bright, energy-efficient white lamps, as well as colour LED screens.

  • All gadgets have blue light

  • Working on blue light

    Some scientists are working on making blue light not harmful

  • All gadgets will be non harmful