منابع مشابه
Breakdown characteristics of high pressure xenon lamps
An investigation of the breakdown of high intensity discharge (HID) lamps filled with xenon at pressures from 0.1 to 5 bar is presented. Three power supplies were used in order to provide voltage rates of increase covering about four orders of magnitude from 5 mV ns−1 to 100 V ns−1, the latter being typical for electronic ballasts driving commercial HID lamps. Customized lamps ensure a volume b...
متن کاملPhotokeratitis and UV-radiation burns associated with damaged metal halide lamps.
BACKGROUND Damaged metal halide lamps are known to cause outbreaks of photokeratitis and UV-radiation burns among children and adults, which has prompted the Food and Drug Administration, Rockville, Md, to publish consumer recommendations to prevent such injuries. We investigated 3 outbreaks of photokeratitis and UV-radiation burns in gymnasiums associated with failure to heed these recommendat...
متن کاملVegetative Growth of Potato under High- pressure Sodium, High-pressure Sodium SON-Agro, and Metal Halide Lamps
Potato (Solanum tuberosum L. cvs. Norland and Denali) plants were grown under high-pressure sodium (HPS), metal halide (MH), and blue-light-enhanced SON-Agro high-pressure sodium (HPS-S) lamps to study the effects of lamp spectral quality on vegetative growth. All plants were initiated from in vitro nodal cultures and grown hydroponically for 35 days at 300 μmol•m–2•s–1 photosynthetic photon fl...
متن کاملSimulation and Analysis of Power Factor Correction in Electric Control System for Metal Halide High Intensity Discharge Lamps
Metal Halide High Intensity Discharge lamps are becoming popular because of its high efficacy. The operating characteristic of Metal Halide High Intensity Discharge (HID) lamps is complex as it has several stage of operation. So electric control system is required to control the operation of metal halide high intensity discharge lamps. Electric control system involves a number of non linear dev...
متن کاملNotes from the Field: Photokeratoconjunctivitis Outbreak Associated with Damaged Metal Halide Lamps - Maharashtra State, Western India, June 2016.
On June 13, 2016, the Pimpriraja Primary Health Center in Aurangabad district, Maharashtra State, in western India reported learning of approximately 90 persons with red eyes and blurred vision. One day earlier, the patients had attended a gathering in Zalta village to acknowledge the contributions of a local political leader. An investigation by the Field Epidemiology Training Program (FETP) a...
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ژورنال
عنوان ژورنال: Journal of Light & Visual Environment
سال: 1978
ISSN: 0387-8805,1349-8398
DOI: 10.2150/jlve.2.1_9