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SOX Sodium, LPS or low pressure sodium lamp warming up. The pink/red glow of the lamp in its warm up stages is a neon discharge from the fill gas Stock Photo -
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OHLECTRIC 55 Watt T15 SOX55 Low-Pressure Sodium HID Light Bulb - 1800 Kelvin - Clear - BY22D Base - OL-50948 - Amazon.com
Energies | Free Full-Text | Influence of Replacement of Sodium Lamps in Park Luminaires with LED Sources of Different Closest Color Temperature on the Effect of Light Pollution and Energy Efficiency
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