On this page you can find some nice-to-know about LED
A brief summary of the LED history from the early 1907 until today.
Here are som basic knowledge about LED
Glossary from A to Z related to LED.
EN 12464-1: “The Lighting of Workplaces ”
EN 12464-2: “The Lighting of Workplaces - Part 2: Outdoor Work Places"
Glare rating standards.
for fluorescent lamps, for high intensity discharge lamps, and for their ballasts
How the Phoebus cartel engineered a shorter-lived lightbulb and gave birth to planned obsolescence