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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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SOX Sodium, LPS or low pressure sodium lamp warming up. The lamp gradually turns from red to orange as the neon discharge warms the sodium metal up Stock Photo - Alamy
The Sodium Lamp - How it works and history
Ben Krasnow on Twitter: "You can still buy low pressure sodium lamps (eg on Amazon), but the ballasts are expensive and rare. I found that using a cheap CFL ballast, and replacing
The Low Pressure Sodium Lamp
Sodium-vapor lamp - Wikipedia
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