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 ...

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.

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 ...

During the early 1900s it was electric lighting that was the major driving force behind the growth of electrical supply and the electrical contracting industry. Contractors during the last 100 years ...

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 ...