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 ...

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 ...

Two much-publicized electrical companies—General Electric and Westinghouse—supply most of the U. S. with lamp bulbs. In Europe that function is performed chiefly by potent Philips Glow-lampworks of ...

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 ...