Search results with tag "Lighting efficiency"

Lighting Efficiency - Stanford University

High-intensity discharge (HID) lamps HID lamps come in several varieties with widespread applications. They emit light when a current— also regulated through a ballast—is passed between two electrodes on either end of a gas-filled tube. Mercury, sodium, or metal halide gas can be used, each with different color outputs, lifetimes, and

  High, Discharge, Efficiency, Lighting, Intensity, High intensity discharge, Lighting efficiency