![Sample our Built Environment journals, sign in here to start your access, Latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5926/TOC-Subject-Sample-2021-Built-Environment.jpg"})
Abstract
An advance in the development of a new HID lamp has been accomplished. It has a luminous efficacy of 130 lm/W with a CRI of 67—a source color of sunlight at sea level—and a correlated color temperature of about 5100 K. Results of experimental lamp operation promise satisfactory maintenance of light output and adequate lamp life.