Manufacturers originally designed double-ended high-pressure sodium light bulbs so they would be compatible with double-ended metal halide fixtures. Traditional single-ended high-pressure sodium bulbs ...

Think back to mixing primary-color paint in grade school. Remember how mixing in yellow changes white, blue and red? Lighting is no exception. A problem too often overlooked is how the yellow-tinted ...

Most talk glowingly about their neighborhoods’ new nighttime look. But some residents are taking a dim view of bright new streetlights that are popping up across Los Angeles. Energy-saving ...

Traffic Technician for the Traffic Control and Engineering department for the City of Allentown, Brian Sigoda of Allentown changes the high pressure sodium light bulb in a lamppost on 6th Street in ...

While some Long Islanders light menorahs and others prepare to light Christmas trees, the Town of Smithtown is engaged in the biggest lighting project of the season, replacing old fashioned street ...

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. They ...

SUNY ESF will collect and recycle all fluorescent, mercury vapor, metal halide and high-pressure sodium light bulbs used on campus. While many of these bulbs may not actually be hazardous, they will ...

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