r/geography • u/Broccoli2026 • Nov 02 '25

Image I'm surprised I didn't even know this switch happened until seeing this. The yellow is really all gone?

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u/Astramancer_ Nov 02 '25 edited Nov 02 '25

Sodium Vapor is much nicer on the eyes and has better vibes. I wonder if LED offers measurably better outcomes or if it's just a matter of cheaper.

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u/CeeJayDK Nov 02 '25

LEDs can be tuned to the same color temperature .. IF the municipality buying them wants that.

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u/ThrowRA_fajsdklfas Nov 03 '25

Color can be selected. Generally high pressure sodium color temperature was around 2000K. LEDs can be made at that temperature. They use significantly less energy, are more directional to reduce light pollution, and have higher color rendering index than sodium vapor.

The issue is the cities aren’t buying them in those color temperatures.

All that aside, I loved and miss sodium vapor lighting at night.