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PDF) Effects of plasma vs. high pressure sodium lamps on plant growth, fruit yield and quality in greenhouse cucumber production
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What Light Source To Choose?
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Sodium-vapor lamp - Wikipedia
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File:2015-02-09 02 48 45 Street light post with both sodium vapor and mercury vapor lights in the Roy's parking lot in Elko, Nevada.JPG - Wikimedia Commons
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Why does sodium vapor lamp take some time to glow when it is switched on? - Quora
Comparison of LED lights and traditional sodium lamps | Eneltec Group
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Mercury-vapor lamp - Wikipedia
high pressure sodium lamp HPS orange light Stock Photo | Adobe Stock
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Calgary completes conversion of 80K street lights to LED, expects $5M in annual savings | CBC News
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LED vs HPS Street Lights: What's Better in 2020? - HeiSolar
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Crouse-Hinds Sodium Street Lamp | Canada Science and Technology Museum
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Comparison on the effect of light pollution after the city of Dunedin, New Zealand, changed all its sodium lights to shielded LED lighting - credit Brad Phipps : r/space
Lighting-Gallery.net - Low Pressure Lamps/GEC 60W Linear sodium lamp
EYE Sunlux High Pressure Sodium Lamp LU35/MED 35 Watt Medium Base ED17 Lamp Shape - My Lighting Solutions
150 Watt Sodium Vapor Bulb | Hog Slat
Guelph says it can save $750K by using LED street lights | CBC News
