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1 janv. 1962 - first LED light

Description:

A light-emitting diode is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated created by Nick Holonyak

Ajouté au bande de temps:

24 août 2017
0
0
717

Date:

1 janv. 1962
Maintenaint
~ Il y a 63 ans

Les images: