In 1962, when he was 33, the scientist Nick Holonyak, Jr., created the first practical visible light-emitting diode. Holonyak wasn’t trying to create a light that would replace incandescent bulbs. He was trying to make a laser.
In 1962, when he was 33, the scientist Nick Holonyak, Jr., created the first practical visible light-emitting diode. Holonyak wasn’t trying to create a light that would replace incandescent bulbs. He was trying to make a laser.