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HPS lamps work by subjecting sodium to high pressure. The result is warm golden white lighting that has indoorand outdoor uses. Indoors, HPS lamps serve as grow lights and in greenhouses. Outdoors, they meet agricultural and horticultural needs for lighting, and security.

Sunlight can be visible, or invisible. Invisible sunlight is infrared or ultraviolet, depending on whether it's drawing on red or blue color extremes. Most plants need orange-red lighting.

Additionally, infrared lighting encourages quality flowering, ultraviolet quality shapes and stems. HPS bulbs meet visible, and invisible, lighting needs.

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Q: How does high-pressure sodium work?
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