The Business Journals

What businesses need to know when comparing LED and high-pressure sodium lights

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Think back to mixing primary-color paint in grade school ...
EDN

Bridgelux Replaces High-Pressure Sodium Lamps and Rolls 10-Year Warranty

There’s a new LED module on the block, the Bridgelux Outdoor Lighting Module (OLM) that reduces manufacturing cost of outdoor solid state lighting fixtures by 20% to 20% while lowering power ...
Chicago Tribune

Chicago’s night sky is about to become an orange memory, as the city nears end of LED streetlight replacement. But are the new lights better?

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 ...
insider.si.edu

Low pressure sodium lamp, type Na-10

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. As knowledge of materials and ...
Electronic Design

HID Lamp Dimming

More than 105 million high-intensity discharge (HID) lamps, ranging from 20W to 2,000W in size, are now in use in a broad range of interior and exterior applications in the United States. HID lighting ...
Purdue University

Ornamental plant seedlings grown with LED lights at Purdue

Purdue University associate professor Roberto Lopez (right) and doctoral student Joshua Craver are finding that sole-source LEDs can produce high-quality ornamental seedlings. (Purdue Agricultural ...
WLRN

LED streetlights are energy efficient, but are they environmentally friendly? It's complicated

Rick Newman's backyard in east Boca Raton has that Old Florida vibe: A swimming pool is surrounded by live oaks and palms. For years, the trees' lush canopy has kept the area shaded against the sun, ...
Medicine Buffalo

Sodium’s high-pressure transformation can tell us about the interiors of stars, planets

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 ...
Purdue University

Ornamental plant seedlings grown with LED lights at Purdue

Annual bedding plant seedlings or plugs are considered high quality when they are compact, fully rooted transplants with a large stem caliper and high root dry mass. Greenhouses in northern latitudes ...