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4 janv. 1962 - LED Bulbs The most widely used lightbulb type today, Nick Holonyak invents the first visible spectrum Light- Emitting Diode

Ajouté au bande de temps:

Batteries and Lightbulbs

ByJacqueline Xie

11 sept. 2018

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Date:

4 janv. 1962

Maintenaint

~ Il y a 63 ans

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