sodium vapor streetlights

Chicagoland seeks healthier-looking glow with new ceramic metal halide street lights

By / August 11, 2011

Steetlights with a better spectrum and cheaper to operate are being installed in Chicago and other cities. Credit: Philips. I grew up near the steel mills in Middletown, Ohio, and if the clouds were just right at nighttime I would see a few minutes of bright orange glow in the sky when a ladle of…

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