Streetlights [light pollution]

qualcomm

Streetlights are a simple concept: Lights on top of tall poles that illuminate dark streets. So it’s not awfully surprising that today’s streetlights look similar to streetlights from centuries ago.

However, lighting technology has changed enormously since streetlights first popped up in ancient Greek and Roman civilizations. Here’s how they have evolved.

SRelated: light pollution, and why it matters that you care about it.

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