High- and Low-Pressure Sodium Lamp | SpringerLink
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The light spectrum of high-pressure sodium (HPS) and plasma lights. | Download Scientific Diagram
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The spectrum and color of sodium low pressure lamps - ACTION Project
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Sodium-vapor lamp - Wikipedia
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High- and Low-Pressure Sodium Lamp | SpringerLink
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File:Low-pressure sodium lamp 700-350nm widened.jpg - Wikimedia Commons
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LED Horticultural Lights vs. Traditional HPS Grow Lights - Premier Lighting
The Low Pressure Sodium Lamp
High- and Low-Pressure Sodium Lamp | SpringerLink
Low Pressure Sodium LPS lamps are more closely related to fluorescent than High Intensity Discharge lamps, since they have a low–pressure, low–intensity. - ppt download
Plantmax – 1000W High Pressure Sodium DE Lamp – Allstate Garden Supply
