FLAGSTAFF — Since the passage in the 1980s of Flagstaff's comprehensive lighting ordinance, the golden hues of low-pressure sodium lights have come to prevail in Flagstaff skies. They are a response ...

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 ...

Researchers will begin testing special lighting this summer that could illuminate beachside parking lots, boardwalks and parks without luring sea turtle hatchlings to their deaths. Bright lights on ...

Dhaka City Corporation (DCC) and Roads and Highways Department have replaced the existing low-pressure sodium lights with high-pressure ones in a bid to enhance the visibility of the traffic at night.

Proper outdoor lighting necessitates the use of "full cutoff" fixtures to minimize upward light emission and glare, thereby enhancing safety and security. Optimal outdoor lighting involves using the ...

Thousands of lamp-posts in Dublin will soon see a switch from sodium to LED lightbulbs as part of a multi-million-euro project. Dublin City Council says the change will save money in the long run and ...