The Sylvania Relumina is a retrofit energy saving Mercury Vapour replacement lamp. The Relumina lamp offers huge energy savings with a high luminous efficacy, an ...

He ended up making two light therapy lamps, one of them directional and the other omni-directional. They both use ballast-controlled ceramic metal halide bulbs. The ballasts are necessary to ...

High intensity discharge lamps contain compact arc tubes that enclose various gases and metal salts. They operate at relatively high pressures and temperatures. High intensity discharge (HID) is a ...