metal used in street lamps

Street light Wikipedia. In settings near astronomical telescopes and observatories, low pressure sodium lamps may be used. These lamps are advantageous over other lamps such as mercury and metal halide lamps because low pressure sodium lamps emit lower intensity, monochromatic light. See more

Street light Wikipedia
Street light Wikipedia from thumbs.dreamstime.com

WebThese lamps include metal halide, high-pressure sodium, and mercury vapor bulbs. They emit very bright light but consume high amounts of energy and have a shorter lifespan.

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