Incandescent Lamps One of the oldest electric lighting technologies.
{"Image DocumentName": "Incandescent Lamps One of the oldest electric lighting technologies.", "Image ImageDescription": "Light is produced by passing a current through a tungsten filament. Least efficient \u2013 (4 to 24 lumens/watt). Lamp life ~ 1,000 hours.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}