I detest sodium-vapor streetlights, whose yellowish glow now colors the night and stains metropolitan horizons everywhere. When I was growing up in suburban California in the 1960s and ’70s, the ...

Rick Newman's backyard in east Boca Raton has that Old Florida vibe: A swimming pool ... sodium lamp that was there before. High pressure sodium streetlights emit a warm, amber colored light.

The researchers predict that filtered yellow-green and amber LEDs should have lower effects on wildlife than high-pressure sodium lamps, and that blue-toned light will affect wildlife ...

which also gives off a white light, suppresses melatonin at a rate more than 5 times higher than the HPS bulb. "The current migration from the now widely used sodium lamps to white lamps will ...

which also gives off a white light, suppresses melatonin at a rate more than 5 times higher than the HPS bulb. "The current migration from the now widely used sodium lamps to white lamps will ...

Riegel also observed that "high pressure sodium lamps do not account for a very high percentage of outdoor lights in operation presently," but that "municipalities and commercial light users are ...

It’s a familiar sight, especially in the summertime: moths and other insects gathered around lights like ... switched to sodium-vapor bulbs because the wave-length of light they emit is much ...

For almost two generations of Chicagoans, orange has been the color of night. High pressure sodium vapor lights, which create a glow reminiscent of a tire fire, have lit Chicago since the 1970s.

The RWL-LED-20 48 Watt Street Light provides output comparable to a 70 watt HPS lamp, but with much better light quality, enhanced durability, and a 100,000 hour service rating. “We have ...

Indeed, LED streetlights have begun to replace sodium lamps – which produce yellow light – in many European countries. As well as offering lower cost and higher energy efficiency than sodium, LEDs ...

Starting from Monday, the Manaveeyam Road will be lit up with Light Emitting Diode (LED) lights instead of sodium vapour lamps. The trial of LED lamps on the stretch will begin from Monday evening.