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 ...

Alliant Energy had been studying replacing the high-pressure sodium light bulb casting a yellowish-orange glow on downtowns and residential streets around Iowa with a more efficient, brighter white ...

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 ...

AFTER a streetlight opposite his home stopped working, your columnist started noticing others on his California hillside that had also gone dark. Twice he reported the matter, to no avail. Then, after ...

Buying a light bulb used to be a no-brainer. Now it's a brain teaser; the transition to more energy-efficient lighting means choosing from a dazzling array of products. We've long identified bulbs by ...

The era of the orange street light is over. In its place, moonlight now shines on Tacoma. The city has just completed a 10-month-long changeover of its old orange-colored street lights to white LED ...

America’s ban on incandescent light bulbs, 16 years in the making, is finally a reality. Well, mostly. A rule issued in 2007, rolled back by the Trump administration, and updated last year by the ...

When the ball drops on New Year’s Eve, the year ends -- and so does the ordinary lightbulb. Jan. 1. marks the end of a seven-year effort to outlaw the ordinary lightbulb, thanks to a 2007 law that ...