A problem too often overlooked is how the yellow-tinted light of high-pressure sodium (HPS) fixtures, which are typically found lighting streets and some parking lots, impacts your perception of ...

These are the white lights you see on the right side, at the entrance to the truck bays. The rest of the building is lit by 250-Watt HPS (high-pressure sodium) Wall-Packs. The LED light costs about ...

The decision to transition to LED streetlights wasn't entirely up to city officials. High-pressure sodium lights are no longer readily available from manufacturers or utility companies.

LED lighting in the background vs high-pressure sodium lighting in the foreground on Spruce Street. (Office of Sustainability/Dominic McGraw) Walk down a Philadelphia street at night and most likely, ...

Nichia replaces high-pressure sodium lighting with leds Nichia has created an led with the feel of HPS (high-pressure sodium) lighting, it claims. Nichia: HPS lighting can create a nostalgic or ...

Using nearly 50% less energy and designed to last over three times longer than traditional high-pressure sodium street lighting, the XSP Series can double the lumens per dollar compared to ...

A University at Buffalo-led study has revealed the chemical bonding behind sodium's high-pressure transformation from shiny metal to transparent insulator.

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. Th… ...

BUFFALO, N.Y. — Travel deep enough below Earth’s surface or inside the center of the Sun, and matter changes on an atomic level. The mounting pressure within stars and planets can cause metals to ...

A new study has revealed the chemical bonding behind sodium's high-pressure transformation from shiny metal to transparent insulator.